Gamma-ray Burst 080229

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:05:22 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     304379,   Seg_Num: 0
GRB_RA:          228.217d {+15h 12m 52s} (J2000),
                 228.330d {+15h 13m 19s} (current),
                 227.522d {+15h 10m 05s} (1950)
GRB_DEC:         -14.712d {-14d 42' 43"} (J2000),
                 -14.742d {-14d 44' 32"} (current),
                 -14.525d {-14d 31' 31"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4557 [cnts]    Image_Peak=194 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   148     E_range: 50-350 keV
BKG_INTEN:       25614 [cnts]
BKG_TIME:        61485.39 SOD {17:04:45.39} UT
BKG_DUR:         8 [sec]
GRB_DATE:        14525 TJD;    60 DOY;   08/02/29
GRB_TIME:        61499.53 SOD {17:04:59.53} UT
GRB_PHI:         -63.79 [deg]
GRB_THETA:        39.72 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     25.45 [sigma]
IMAGE_SIGNIF:    10.25 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +3 +10  +0  +0 +35  +1 
SUN_POSTN:       341.99d {+22h 47m 57s}   -7.63d {-07d 38' 04"}
SUN_DIST:        110.54 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.48d {+17h 01m 55s}  -27.78d {-27d 46' 59"}
MOON_DIST:        28.36 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.63, 35.89 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      229.80,  3.09 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 107.47,-16.00 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:07:20 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     304379,   Seg_Num: 0
GRB_RA:          228.2153d {+15h 12m 51.6s} (J2000),
                 228.3288d {+15h 13m 18.9s} (current),
                 227.5210d {+15h 10m 05.0s} (1950)
GRB_DEC:         -14.7018d {-14d 42' 06.4"} (J2000),
                 -14.7320d {-14d 43' 55.3"} (current),
                 -14.5150d {-14d 30' 54.1"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       195 [cnts]
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61589.87 SOD {17:06:29.87} UT,   90.3 [sec] since BAT Trigger Time
CENTROID_X:      280.75,  raw= 281  [pixels]
CENTROID_Y:      315.38,  raw= 315  [pixels]
ROLL:            104.23 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   40.98
GRB_POS_XRT_Z:   -50.77
IMAGE_URL:       sw00304379000msxps_rw.img
SUN_POSTN:       341.99d {+22h 47m 57s}   -7.63d {-07d 38' 03"}
SUN_DIST:        110.54 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.50d {+17h 01m 59s}  -27.78d {-27d 47' 03"}
MOON_DIST:        28.39 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.64, 35.90 [deg] galactic lon,lat of the burst
ECL_COORDS:      229.80,  3.10 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:07:14 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     304379,   Seg_Num: 0
GRB_RA:          228.2153d {+15h 12m 51.6s} (J2000),
                 228.3288d {+15h 13m 18.9s} (current),
                 227.5210d {+15h 10m 05.0s} (1950)
GRB_DEC:         -14.7018d {-14d 42' 06.4"} (J2000),
                 -14.7320d {-14d 43' 55.3"} (current),
                 -14.5150d {-14d 30' 54.1"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       195 [cnts]
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61589.87 SOD {17:06:29.87} UT,   90.3 [sec] since BAT Trigger Time
CENTROID_X:      280.75,  raw= 281  [pixels]
CENTROID_Y:      315.38,  raw= 315  [pixels]
ROLL:            104.23 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   40.98
GRB_POS_XRT_Z:   -50.77
IMAGE_URL:       sw00304379000msxps_rw.img
SUN_POSTN:       341.99d {+22h 47m 57s}   -7.63d {-07d 38' 03"}
SUN_DIST:        110.54 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.50d {+17h 01m 59s}  -27.78d {-27d 47' 03"}
MOON_DIST:        28.39 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.64, 35.90 [deg] galactic lon,lat of the burst
ECL_COORDS:      229.80,  3.10 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:07:04 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     304379,   Seg_Num: 0
GRB_RA:          228.2153d {+15h 12m 51.6s} (J2000),
                 228.3288d {+15h 13m 18.9s} (current),
                 227.5210d {+15h 10m 05.0s} (1950)
GRB_DEC:         -14.7018d {-14d 42' 06.4"} (J2000),
                 -14.7320d {-14d 43' 55.3"} (current),
                 -14.5150d {-14d 30' 54.1"} (1950)
GRB_ERROR:       4.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       5.98e-09 [erg/cm2/sec]
GRB_SIGNIF:      13.96 [sigma]
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61589.87 SOD {17:06:29.87} UT,   90.3 [sec] since BAT Trigger Time
TAM[0-3]:        327.66 237.22 261.34 243.73
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       341.99d {+22h 47m 57s}   -7.63d {-07d 38' 03"}
SUN_DIST:        110.54 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.49d {+17h 01m 59s}  -27.78d {-27d 47' 02"}
MOON_DIST:        28.38 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.64, 35.90 [deg] galactic lon,lat of the burst
ECL_COORDS:      229.80,  3.10 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:08:49 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.199d {+15h 12m 48s} (J2000)
POINT_DEC:       -14.710d {-14d 42' 34"} (J2000)
POINT_ROLL:      104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61598.56 SOD {17:06:38.56} UT,   99.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.339
N_STARS:         183
X_OFFSET:        592 [pixels]
Y_OFFSET:        472 [pixels]
X_MAX:           1551 [pixels]
Y_MAX:           1431 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00304379000msufc0099.fits
SUN_POSTN:       341.99d {+22h 47m 57s}   -7.63d {-07d 38' 01"}
SUN_DIST:        110.56 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.51d {+17h 02m 03s}  -27.79d {-27d 47' 06"}
MOON_DIST:        28.41 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.62, 35.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.79,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:09:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.199d {+15h 12m 48s} (J2000)
POINT_DEC:       -14.710d {-14d 42' 34"} (J2000)
POINT_ROLL:      104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61598.56 SOD {17:06:38.56} UT,   99.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.339
N_STARS:         183
X_OFFSET:        592 [pixels]
Y_OFFSET:        472 [pixels]
X_MAX:           1551 [pixels]
Y_MAX:           1431 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00304379000msufc0099.fits
SUN_POSTN:       341.99d {+22h 47m 58s}   -7.63d {-07d 38' 01"}
SUN_DIST:        110.56 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.52d {+17h 02m 04s}  -27.79d {-27d 47' 07"}
MOON_DIST:        28.41 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.62, 35.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.79,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:10:16 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.199d {+15h 12m 48s} (J2000)
POINT_DEC:       -14.710d {-14d 42' 34"} (J2000)
ROLL:            104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61598.56 SOD {17:06:38.56} UT,   99.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     225997601
X_OFFSET:        857 [pixels]
Y_OFFSET:        746 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1017
Y_GRB_POS:       906
BINNING_INDEX:   1
IM_URL:          sw00304379000msuni0099.fits
SUN_POSTN:       341.99d {+22h 47m 58s}   -7.63d {-07d 38' 00"}
SUN_DIST:        110.56 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.52d {+17h 02m 06s}  -27.79d {-27d 47' 09"}
MOON_DIST:        28.42 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.62, 35.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.79,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:10:48 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.199d {+15h 12m 48s} (J2000)
POINT_DEC:       -14.710d {-14d 42' 34"} (J2000)
ROLL:            104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61598.56 SOD {17:06:38.56} UT,   99.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     225997601
X_OFFSET:        857 [pixels]
Y_OFFSET:        746 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1017
Y_GRB_POS:       906
BINNING_INDEX:   1
IM_URL:          sw00304379000msuni0099.fits
SUN_POSTN:       341.99d {+22h 47m 58s}   -7.63d {-07d 38' 00"}
SUN_DIST:        110.56 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.53d {+17h 02m 07s}  -27.79d {-27d 47' 10"}
MOON_DIST:        28.42 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.62, 35.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.79,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:10:26 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     304379,   Seg_Num: 0
GRB_RA:          228.217d {+15h 12m 52s} (J2000),
                 228.330d {+15h 13m 19s} (current),
                 227.522d {+15h 10m 05s} (1950)
GRB_DEC:         -14.712d {-14d 42' 43"} (J2000),
                 -14.742d {-14d 44' 32"} (current),
                 -14.525d {-14d 31' 31"} (1950)
GRB_DATE:        14525 TJD;    60 DOY;   08/02/29
GRB_TIME:        61499.53 SOD {17:04:59.53} UT
TRIGGER_INDEX:   148
GRB_PHI:         -63.79 [deg]
GRB_THETA:        39.72 [deg]
DELTA_TIME:      25.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     25.45 [sigma]
IMAGE_SIGNIF:    10.25 [sigma]
LC_URL:          sw00304379000msb.lc
SUN_POSTN:       341.99d {+22h 47m 58s}   -7.63d {-07d 38' 00"}
SUN_DIST:        110.54 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.53d {+17h 02m 06s}  -27.79d {-27d 47' 09"}
MOON_DIST:        28.40 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.63, 35.89 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      229.80,  3.09 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Lightcurve.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 107.47,-16.00 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:19:11 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.196d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 32"} (J2000)
POINT_ROLL:      104.232d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61706.52 SOD {17:08:26.52} UT,   207.0 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.476
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        426 [pixels]
X_MAX:           1496 [pixels]
Y_MAX:           1385 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00304379000msufc0206.fits
SUN_POSTN:       342.00d {+22h 47m 59s}   -7.63d {-07d 37' 51"}
SUN_DIST:        110.57 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.61d {+17h 02m 26s}  -27.79d {-27d 47' 27"}
MOON_DIST:        28.49 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:19:44 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.196d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 32"} (J2000)
POINT_ROLL:      104.232d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61706.52 SOD {17:08:26.52} UT,   207.0 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.476
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        426 [pixels]
X_MAX:           1496 [pixels]
Y_MAX:           1385 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00304379000msufc0206.fits
SUN_POSTN:       342.00d {+22h 47m 59s}   -7.63d {-07d 37' 51"}
SUN_DIST:        110.57 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.61d {+17h 02m 27s}  -27.79d {-27d 47' 29"}
MOON_DIST:        28.50 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:20:34 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.196d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 32"} (J2000)
ROLL:            104.232d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61706.52 SOD {17:08:26.52} UT,   207.0 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     225997709
X_OFFSET:        857 [pixels]
Y_OFFSET:        746 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1017
Y_GRB_POS:       906
BINNING_INDEX:   1
IM_URL:          sw00304379000msuni0206.fits
SUN_POSTN:       342.00d {+22h 47m 59s}   -7.63d {-07d 37' 50"}
SUN_DIST:        110.57 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.62d {+17h 02m 29s}  -27.79d {-27d 47' 30"}
MOON_DIST:        28.50 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:21:00 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.196d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 32"} (J2000)
ROLL:            104.232d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  61706.52 SOD {17:08:26.52} UT,   207.0 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     225997709
X_OFFSET:        857 [pixels]
Y_OFFSET:        746 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1017
Y_GRB_POS:       906
BINNING_INDEX:   1
IM_URL:          sw00304379000msuni0206.fits
SUN_POSTN:       342.00d {+22h 47m 59s}   -7.63d {-07d 37' 50"}
SUN_DIST:        110.57 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.62d {+17h 02m 30s}  -27.79d {-27d 47' 31"}
MOON_DIST:        28.51 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:25:12 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.197d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 31"} (J2000)
POINT_ROLL:      104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  62354.16 SOD {17:19:14.16} UT,   854.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.500
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        426 [pixels]
X_MAX:           1496 [pixels]
Y_MAX:           1385 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00304379000msufc0854.fits
SUN_POSTN:       342.00d {+22h 48m 00s}   -7.63d {-07d 37' 46"}
SUN_DIST:        110.57 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.66d {+17h 02m 39s}  -27.79d {-27d 47' 40"}
MOON_DIST:        28.54 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:25:42 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.197d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 31"} (J2000)
POINT_ROLL:      104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  62354.16 SOD {17:19:14.16} UT,   854.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.500
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        426 [pixels]
X_MAX:           1496 [pixels]
Y_MAX:           1385 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00304379000msufc0854.fits
SUN_POSTN:       342.00d {+22h 48m 00s}   -7.63d {-07d 37' 45"}
SUN_DIST:        110.57 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.67d {+17h 02m 40s}  -27.79d {-27d 47' 41"}
MOON_DIST:        28.54 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:27:07 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.197d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 31"} (J2000)
ROLL:            104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  62354.16 SOD {17:19:14.16} UT,   854.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     225998356
X_OFFSET:        856 [pixels]
Y_OFFSET:        745 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1016
Y_GRB_POS:       905
BINNING_INDEX:   1
IM_URL:          sw00304379000msuni0854.fits
SUN_POSTN:       342.00d {+22h 48m 00s}   -7.63d {-07d 37' 44"}
SUN_DIST:        110.57 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.68d {+17h 02m 44s}  -27.80d {-27d 47' 44"}
MOON_DIST:        28.55 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:26:42 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.197d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 31"} (J2000)
ROLL:            104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  62354.16 SOD {17:19:14.16} UT,   854.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     225998356
X_OFFSET:        856 [pixels]
Y_OFFSET:        745 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1016
Y_GRB_POS:       905
BINNING_INDEX:   1
IM_URL:          sw00304379000msuni0854.fits
SUN_POSTN:       342.00d {+22h 48m 00s}   -7.63d {-07d 37' 44"}
SUN_DIST:        110.57 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.68d {+17h 02m 43s}  -27.80d {-27d 47' 43"}
MOON_DIST:        28.55 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:32:21 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.196d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 31"} (J2000)
POINT_ROLL:      104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  62460.18 SOD {17:21:00.18} UT,   960.7 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.460
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        426 [pixels]
X_MAX:           1496 [pixels]
Y_MAX:           1385 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00304379000msufc0960.fits
SUN_POSTN:       342.00d {+22h 48m 01s}   -7.63d {-07d 37' 39"}
SUN_DIST:        110.58 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.73d {+17h 02m 55s}  -27.80d {-27d 47' 54"}
MOON_DIST:        28.60 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:32:48 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.196d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 31"} (J2000)
POINT_ROLL:      104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  62460.18 SOD {17:21:00.18} UT,   960.7 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.460
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        426 [pixels]
X_MAX:           1496 [pixels]
Y_MAX:           1385 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00304379000msufc0960.fits
SUN_POSTN:       342.01d {+22h 48m 01s}   -7.63d {-07d 37' 38"}
SUN_DIST:        110.58 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.73d {+17h 02m 56s}  -27.80d {-27d 47' 55"}
MOON_DIST:        28.60 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:33:43 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.196d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 31"} (J2000)
ROLL:            104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  62460.18 SOD {17:21:00.18} UT,   960.7 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     225998462
X_OFFSET:        856 [pixels]
Y_OFFSET:        745 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1016
Y_GRB_POS:       905
BINNING_INDEX:   1
IM_URL:          sw00304379000msuni0960.fits
SUN_POSTN:       342.01d {+22h 48m 01s}   -7.63d {-07d 37' 38"}
SUN_DIST:        110.58 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.74d {+17h 02m 58s}  -27.80d {-27d 47' 57"}
MOON_DIST:        28.61 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 29 Feb 08 17:34:04 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     304379,   Seg_Num: 0
POINT_RA:        228.196d {+15h 12m 47s} (J2000)
POINT_DEC:       -14.709d {-14d 42' 31"} (J2000)
ROLL:            104.231d
IMG_START_DATE:  14525 TJD;    60 DOY;   08/02/29
IMG_START_TIME:  62460.18 SOD {17:21:00.18} UT,   960.7 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     225998462
X_OFFSET:        856 [pixels]
Y_OFFSET:        745 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1016
Y_GRB_POS:       905
BINNING_INDEX:   1
IM_URL:          sw00304379000msuni0960.fits
SUN_POSTN:       342.01d {+22h 48m 01s}   -7.63d {-07d 37' 37"}
SUN_DIST:        110.58 [deg]   Sun_angle= 7.6 [hr] (West of Sun)
MOON_POSTN:      255.75d {+17h 02m 59s}  -27.80d {-27d 47' 58"}
MOON_DIST:        28.61 [deg]
MOON_ILLUM:      44 [%]
GAL_COORDS:      346.61, 35.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      229.78,  3.09 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #7335
J. K. Cannizzo (NASA/UMBC), S. D. Barthelmy (GSFC), A. P. Beardmore (U Leicester), J. R. Cummings (NASA/UMBC), P. A. Evans (U Leicester), O. Godet (U Leicester), C. Gronwall (PSU), S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU), S. Immler (CRESST/GSFC/UMD), J. A. Kennea (PSU), V. Mangano (INAF-IASFPA), C. B. Markwardt (CRESST/GSFC/UMD), K. M. McLean (GSFC/UMD), A. Moretti (INAF-OAB), P. T. O'Brien (U Leicester), J. P. Osborne (U Leicester), C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), A. M. Parsons (GSFC), T. Sakamoto (NASA/UMBC), G. Sato (GSFC/ISAS), B. Sbarufatti (INAF-IASFPA), M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester), G. Stratta (ASDC) and E. Troja (U Leicester/INAF-IASFPa) report on behalf of the Swift Team:
At 17:04:59 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080229 (trigger=304379). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 228.217, -14.712 which is
```
   RA(J2000)  =  15h 12m 52s
   Dec(J2000) = -14d 42' 43"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed three or four bright peaks with the brightest at ~T+40 sec with a duration of about 60 sec. The peak count rate was ~7000 counts/sec (15-350 keV), at ~40 sec after the trigger.
The XRT began observing the field at 17:06:29.9 UT, 90.3 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source with an enhanced position: RA, Dec 228.21888, -14.70536 which is equivalent to:
```
   RA(J2000)  = 15h 12m 52.53s
   Dec(J2000) = -14d 42' 19.3"
```
with an uncertainty of 2.7 arcseconds (radius, 90% containment). This location is 24 arcseconds from the BAT onboard position, within the BAT error circle.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 8.97e+20 cm^-2 (Kalberla et al. 2005), so we cannot constrain the redshift at this time using the relation from Grupe et al. (2007). A summary of the promptly downlinked data is given at http://www.swift.ac.uk/sper/304379/ .
The initial flux in the 2.5 s image was 5.98e-09 erg cm^-2 s^-2 (0.2-10 keV).
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 100 seconds after the BAT trigger. A 400 second image in V band was also taken 207 seconds after the trigger. No afterglow candidate has been found in the either image. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 18.5 mag in white and 18.0 in V. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.15. There is a F0 star with R1~13.3 in the USNO catalog nearby the XRT position which appears in DSS images.
Burst Advocate for this burst is J. K. Cannizzo (cannizzo AT milkyway.gsfc.nasa.gov). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
GCN Circular #7336
B. E. Schaefer (Louisiana State) and E.S. Rykoff (UCSB), report on behalf of the ROTSE collaboration:
ROTSE-IIIa, located at Siding Spring Observatory, Australia, responded to GRB 080229A (Swift trigger 304379; Cannizzo et al. 2008, GCN 7335), producing images beginning 9.8 s after the GCN notice time. An automated response took the first image at 17:05:31.8 UT, 32.3 s after the burst, and during the gamma-ray emission, under excellent conditions. We took 10 5-sec, 10 20-sec and 20 60-sec exposures, with continuing exposures now ongoing. These unfiltered images are calibrated relative to USNO A2.0 (R).
Comparison to the DSS (second epoch) reveals no new sources within the 3-sigma Swift/BAT error circle; the field is not crowded. Unfortunately, the XRT position is close to a star of moderate brightness, so the optical transient could possibly be hidden by the light from this star. We do not see any indication that the image of the star is not that of the PSF, and preliminary image subtractions do not reveal any extra sources. Individual images have limiting magnitudes ranging from 14.7-16.1; we set the following specific limits.
```
start UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd?
--------------------------------------------------------------------
17:05:31.8   17:05:36.8         5     14.7           32.3       N
```
GCN Circular #7337
R.J. Smith, D.F. Bersier, S. Kobayashi, A. Monfardini, C.G. Mundell, I. A. Steele (Liverpool JMU), A. Gomboc (U. Ljubljana), C. Guidorzi (U. Bicocca & INAF-OAB) P. O'Brien, E. Rol, N. Bannister (Leicester) report:
The 2-m Faulkes Telescope South (Siding Spring) robotically followed up GRB080229 (SWIFT trigger 304379) starting 4.6 min after the GRB trigger time. The automatic "detection mode" procedure did not find any afterglow. In manual inspection of later observations we do not find any optical candidate corresponding to the XRT X-ray afterglow (Cannizzo et al., GCN 7335) to the following limiting magnitudes. Magnitude zero points are relative to the USNO measure of R=13.3 for the adjacent bright star.
```
-----------------------------------------------
Mid Time      Filter  Tot.Exposure   Lim. Mag.
since GRB

10.95 min       R        60s          18.7
28.10 min       R        180s         21.9
-----------------------------------------------
```
GCN Circular #7338
C. Markwardt (GSFC/UMD), S. D. Barthelmy (GSFC), J. K. Cannizzo (NASA/UMBC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), K. McLean (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+303 sec from recent telemetry downlinks, we report further analysis of BAT GRB 080229 (trigger #304379) (Cannizzo, et al., GCN Circ. 7335). The BAT ground-calculated position is RA, Dec = 228.220, -14.697 deg, which is
```
   RA(J2000)  =  15h 12m 52.7s 
   Dec(J2000) = -14d 41' 50" 
```
with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 18%.
The mask-weighted light curve shows an initial small peak starting at ~T-3 sec, peaking at T_zero, and ending at ~T+12 sec. Then there are two smaller peaks centered on T+18 and T+28 sec. Then comes two overlapping large peaks on T+35 and T+39 sec with the latter tailing out to ~T+85 sec. T90 (15-350 keV) is 64 +- 16 sec (estimated error including systematics).
The time-averaged spectrum from T-15.1 to T+64.9 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.91 +- 0.06. The fluence in the 15-150 keV band is 9.0 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+40.36 sec in the 15-150 keV band is 5.7 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/304379/BA/
GCN Circular #7339
N.P.M. Kuin (MSSL/UCL) and J. K. Cannizzo (NASA/UMBC) report on behalf of the Swift-UVOT team:
The Swift/UVOT observed the field of GRB 080229 (trigger #304379), Canizzo et al. GCN CIRC. 7335) starting 2008:02:29 at 17:06:22 UT with a 9.4 s setling image followed at 17:06:41 UT with a finding chart. No afterglow is detected at the position of the enhanced XRT position in the finding chart, nor in the three subsequent exposures.
The source is near a bright star and may be affected by it. Therefore a small aperture was used and the background was determined for a region at equal distance to the nearby star.
The following 3-sigma upper limits (in the UVOT photometric system, Breeveld et al., GCN Circ. 6614) were determined at the XRT position (RA=15:12:52.53, DEC= -14:42:19.3, J2000):
```
Filter  Tstart(s)  Tstop(s)  Exp(s)  Mag (3-sigma Upper Limits)

 wh      101       200        99.8   > 20.9
 v       208       608       400.0   > 19.9
 wh      856       956        99.8   > 20.9
 v       962      1362       400.0   > 19.9
```
The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 0.15 mag in the direction of the burst (Schlegel et al. 1998).
GCN Circular #7341
M. Yoshida, K. Yanagisawa, Y. Shimizu, S. Nagayama, H. Toda (OAO, NAOJ) and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration:
We performed optical imaging observations (g', Rc, and Ic) of the field of GRB 080229 (Cannizzo et al. GCN 7335) with 50cm MITSuME telescope at Okayama Astrophysical Observatory from UT 17:06:55 (117sec after the trigger) to UT 17:24:40 on Feb 29 2008.
We found a faint fading source in the XRT error circle (Cannizzo et al: GCN 7335) only in the Ic band. There was no source in the g' and the Rc bands. Together with the UVOT results (Kuin and Cannizzo GCN7339), this may suggest that this GRB is a high- redshift one. Follow-up observations in infrared bands are encouraged.
The magnitude of the fading source and 3-sigma upper limits are summarized below.
Observation date 2008-02-29 UT
```
mid-UT    exp-T      g'      Rc       Ic
---------------------------------------------
17:09:40   5 min   >17.5   >17.8    17.1+-0.3
17:18:58  11 min   >17.6   >18.2    >18.0
---------------------------------------------
```
The values quoted above are not corrected for the Galactic extinction.
GCN Circular #7342
P. D'Avanzo, L.A. Antonelli, S. Covino, D. Fugazza, L. Calzoletti, S. Campana, G. Chincarini, M.L. Conciatore, S. Cutini, V. D'Elia, F. D'Alessio, F. Fiore, P. Goldoni, D. Guetta, C. Guidorzi, G.L. Israel, E. Maiorano, N. Masetti, A. Melandri, E. Meurs, L. Nicastro, E. Palazzi, E. Pian, S. Piranomonte, L. Stella, G. Stratta, G. Tagliaferri, G. Tosti, V.Testa, S.D. Vergani, F. Vitali report on behalf of the REM team:
The robotic 60-cm REM telescope located at La Silla (Chile) observed automatically the field of the GRB 080229 (Cannizzo et al., GCN 7335) on March 01.154 UT (about 10.6 hours after the burst).
We do not detect any afterglow candidate inside the XRT error box down to the following limiting magnitudes (3sigma c.l., calibrated against the 2MASS catalog):
```
J > 16.3
H > 15.6
K > 14.4
```
Further analysis is in progress.
GCN Circular #7343
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 1276 s of overlapping XRT Photon Counting mode and UVOT V-band data for GRB 080229, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 228.21828, -14.70467 which is equivalent to:
```
RA (J2000): 15h 12m 52.39s
Dec (J2000): -14d 42' 16.8"
```
with an uncertainty of 1.4 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401 http://www.swift.ac.uk/xrt_positions/Goad.pdf).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #7344
E. Berger (Princeton/Carnegie) reports on behalf of a larger collaboration:
"We observed the refined BAT error circle of GRB 080229 (GCN #7338) with GMOS on the Gemini-South telescope starting on 2008 Mar 1.26 UT (13.1 hours after the burst). We obtained a total of 5x120 sec in g,r,i,z is 0.8" seeing. We do not detect any sources within the XRT error circle (GCN #7343) to the following 3-sigma magnitude limits: g>26.0, r>25.9, i>25.6, z>25.3."
GCN Circular #7345
P. D'Avanzo, C. Guidorzi (INAF-OAB) on behalf of the CIBO collaboration and G. Andreuzzi and Noemi Pinilla Alonso (FGG-INAF, TNG) report:
We observed the field of the GRB 080229 (Cannizzo et al., GCN 7335) with the Italian 3.6m TNG telescope located at Canary Islands on March 01.259 UT (about 13.1 hours after the burst). Observations have been carried out with the NICS NIR camera in imaging mode under good (1.1") seeing conditions.
We do not detect any afterglow candidate inside the enhanced XRT error box (Beardmore et al., GCN 7343) down to the following limiting magnitudes (3sigma c.l., calibrated against the 2MASS catalog):
```
J > 20.9
H > 20.1
K > 19.5
```
GCN Circular #7346
GRB080229: Swift XRT refined analysis
J.Mao, (INAF-OAB), A. Moretti (INAF-OAB), J. Canizzo (NASA/UMBC), C.=20 Guidorzi (Univ. Bicocca & INAF-OAB), A, Beardmore (U Leicester) P. Evans (U Leicester) report on behalf of the Swift-XRT team:
We have analysed the first 2 orbits of Swift-XRT data obtained for BAT GRB 080229 (trigger #304379, Cannizzo, et al., GCN Circ. 7335).
The data consist of 149 s in Windowed Timing (WT) mode, starting 90 s after the BAT trigger and 8.34 ks in Photon Counting (PC) mode. The astrometrically corrected X-ray position is given in Beardomre et=20 al. GCN 7324.
The XRT light-curve shows a flare peaking few seconds after the beginning of the observation (103+/-2 s). The descending part of the flare can be=20 fit by a power law with a slope of alpha1=3D4.45+/-0.09 up to a break at t1=3D192.4+/- 2.5 s, whi= ch is followed by a flat decay with a slope of alpha2=3D0.18+/-0.01. A second break is present at 2700+/-1000 s with alpha3=3D0.8+/-0.5
The spectrum formed from all the WT data can be modeled with a power-law of photon index Gamma =3D 2.88 =B1 0.09, with an absorbing column of NH =3D (3.1 =B1 0.2)e21 cm^-2 (in excess with respect to the Galactic value of 8.97e20 cm^-2). The spectrum formed from the PC data can be modeled with a power-law of photon index Gamma =3D 1.99 =B1 0.07, with an absorbing column of NH =3D (3.1 =B1 0.2)e21 cm^-2, which is in agreement with the WT one.
If the light-curve continues to decay with a slope of 0.8, the afterglow at 24 hour will be still bright with an expected count rate of 0.3 count s^-1. This corresponds to an observed (unabsorbed) flux of 1.41E-11(2.2e-11) erg cm-2 s-1.
This circular is an official product of the Swift-XRT team.
GCN Circular #7347
P. D'Avanzo and G. Tagliaferri (INAF-OAB) on behalf of the MISTICI collaboration report:
We observed the field of the GRB 080229 (Cannizzo et al., GCN 7335) with the ESO-VLT on March 01.411 UT (about 16.8 hours after the burst). Observations have been carried out in J-band with the ISAAC NIR camera in imaging mode under very good (0.7") seeing conditions.
We do not detect any afterglow candidate inside the enhanced XRT error box (Beardmore et al., GCN 7343) down to J > 21.6 (3sigma c.l., calibrated against the 2MASS catalog).
We acknowledge support from the ESO staff, in particular Thomas Szeifert.
GCN Circular #7348
A. de Ugarte Postigo (ESO, Chile), F. Aceituno, A.J. Castro-Tirado (IAA-CSIC, Spain) on behalf of a larger colaboration report,
We have observed the field of GRB 080229 (Cannizzo et al. GCN 7335) with the 1.5m telescope at Sierra Nevada Observatory (OSN, Granada). The observations were obtained in I-band and range between March 1.1681 and March 1.2638 UT (mean exposure 0.5042 days after the burst). We do not detect any new source in the error box of Swift/XRT (Beardmore et al. GCN 7343) down to a 3-sigma limiting magnitude of I~22.0.
This message can be cited.
GCN Circular #7361
Poonam Chandra (NRAO/UVA) and Dale A. Frail (NRAO) report on behalf of the Caltech-NRAO-Carnegie GRB Collaboration:
"We used the Very Large Array to observe the field of view toward GRB 080229 (GCN 7335) at a frequency of 8.46 GHz on 2008 March 01.50 UT. We detect a radio source of flux density of 635 +/- 44 uJy at a position of RA(J2000) 15 12 52.21984, DEC(J2000) -14 42 15.3000. This is 2.82" away from the X-ray afterglow position determined by Swift-XRT (GCN 7343).
The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."
GCN Circular #7377
R. Hara, H.hayasi, N.Ohmori, K.Kono H. Tanaka, M.Yamauchi, E.Sonoda, (University of Miyazaki)
We have observed the field covering the error circle of GRB080229 (GCN 7338, C. Markwardt et al.) with the unfiltered CCD camera on the 30-cm telescope at University of Miyazaki. The observation was started 17:05:03 UT, ~225 min after the Swift trigger time.
We have compared our data of 30 sec exposures with the USNO-A2.0 catalog,there is no new source at the reported position.
```
the upper limits are as follows:
--------------------------------------------------------------
Start(UT) End(UT)	Num. of frames 	Limit (mag.)
--------------------------------------------------------------
19:33:57 19:34:27 	1 		~16.06
19:33:57 20:39:37 	20 		~16.79
---------------------------------------------------------------
```
GCN Circular #7380
R.Hara notes:
I stated in GCN7337$B!!(Bas "The observation was started 17:05:03 UT, ~225 min after the Swift trigger time."
but the correct one is "The observation was started 19:30:40 UT, about 146 min after the Swift trigger time."
We apologize for any inconvenience this may have caused.
GCN Circular #7404
T. Minezaki (IoA, Tokyo), P.A. Price (IfA, Hawaii), Y. Yoshii (IoA, Tokyo), L. Cowie (IfA, Hawaii) and Y. Kakazu (IfA, Hawaii) report:
We observed the localisation of GRB 080229 with the MAGNUM telescope + MIP dual-beam imager. We do not find any afterglow in the RIYJHK images within the XRT error circle (GCN #7343). We estimated the upper limits in JHK based on flux calibration with a nearby 2MASS star as follows:
```
  Filter   t - t_GRB (hour)    Limit (mag)
  J        +19.8               20.5
  H        +20.7               20.0
  K        +20.4               19.4
```
This message may be cited.
GCN Circular #7407
K. Kinugasa (Gunma Astronomical Observatory) report:
The field of GRB 080229A (Cannizzo et al. GCN 7335) was observed with the 150 cm telescope of the Gunma Astronomical Observatory. Starting at 18:19 UT (1.25 hours after the burst), Rc, and Ic frames were acquired for 5 x 3-min exposures under a poor seeing (~3.5arcsec) condition.
The enhaunced XRT position (Beardmore et al. GCN 7343) is close to a bright star, so the field are strongly contaminated with the light from this star. We do not identify the optical counterpart reported by Yoshida et al. (GCN 7341) to 3-sigma limiting magnitudes of Rc=19.3 and Ic=18.7 relative to USNO-B1.0 magnitudes.
GCN Report 119.1
GCN_Report 119.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_119_1.pdf by J. K. Cannizzo at NASA/UMBC titled: "Final Swift observations of GRB 080229A"
GCN Report 119.2
GCN_Report 119.2 has been posted: http://gcn.gsfc.nasa.gov/reports/report_119_2.pdf by J. K. Cannizzo at NASA/UMBC titled: "Corrected Final Swift observations of GRB 080229A"
GCN Circular #8465
Aquib Moin (Curtin Institute of Radio Astronomy / Australia Telescope National Facility), Steven Tingay (Curtin Institute of Radio Astronomy), Chris Phillips (Australia Telescope National Facility), Gregory Taylor (University of New Mexico), Mark Wieringa (Australia Telescope National Facility) and Ralph Martin (Perth Observatory) report:
We observed the BAT refined position of the GRB 080229a (GCN 7338) at 4.8 and 8.456 GHz with the Australia Telescope Compact Array (ATCA) on May 31, 2008 between 08:18:55 UT and 13:38:25 UT.
We did not detect a radio source at the BAT position of the GRB 080229a (GCN 7338). The radio flux density at the GRB position is -0.053 +/- 0.175 mJy at 4.8 GHz, and -0.383 +/- 0.356 mJy at 8.6 GHz (1-sigma).
The Australia Telescope Compact Array (/ Parkes telescope / Mopra telescope / Long Baseline Array) is part of the Australia Telescope which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO.
See field image at:
http://cira.ivec.org/dokuwiki/doku.php/grb/grb_080229a_field_image
Please note: http://astronomy.ivec.org is now http://cira.ivec.org

Back to JG's homepage

Jochen Greiner, last update: 03-Nov-2008 [Disclaimer]