Gamma-ray Burst 080205

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 07:56:14 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     302506,   Seg_Num: 0
GRB_RA:           98.219d {+06h 32m 53s} (J2000),
                  98.410d {+06h 33m 38s} (current),
                  97.042d {+06h 28m 10s} (1950)
GRB_DEC:         +62.769d {+62d 46' 07"} (J2000),
                 +62.762d {+62d 45' 43"} (current),
                 +62.806d {+62d 48' 20"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4456 [cnts]    Image_Peak=189 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   139     E_range: 15-50 keV
BKG_INTEN:       28260 [cnts]
BKG_TIME:        28533.44 SOD {07:55:33.44} UT
BKG_DUR:         8 [sec]
GRB_DATE:        14501 TJD;    36 DOY;   08/02/05
GRB_TIME:        28551.75 SOD {07:55:51.75} UT
GRB_PHI:         -145.00 [deg]
GRB_THETA:        38.45 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.09 [sigma]
IMAGE_SIGNIF:    8.53 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +1  +4  +0  +0 +58  +1 
SUN_POSTN:       318.34d {+21h 13m 22s}  -16.08d {-16d 04' 31"}
SUN_DIST:        125.69 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.47d {+19h 45m 52s}  -24.26d {-24d 15' 30"}
MOON_DIST:       139.64 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.37, 21.87 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       94.86, 39.47 [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 = 182.86,17.34 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 07:58:00 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     302506,   Seg_Num: 0
GRB_RA:           98.2576d {+06h 33m 01.8s} (J2000),
                  98.4480d {+06h 33m 47.5s} (current),
                  97.0800d {+06h 28m 19.1s} (1950)
GRB_DEC:         +62.7918d {+62d 47' 30.4"} (J2000),
                 +62.7853d {+62d 47' 06.9"} (current),
                 +62.8290d {+62d 49' 44.2"} (1950)
GRB_ERROR:       4.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       6.99e-09 [erg/cm2/sec]
GRB_SIGNIF:      13.74 [sigma]
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28652.73 SOD {07:57:32.73} UT,   101.0 [sec] since BAT Trigger Time
TAM[0-3]:        327.70 237.27 261.55 243.41
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       318.34d {+21h 13m 22s}  -16.08d {-16d 04' 30"}
SUN_DIST:        125.69 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.48d {+19h 45m 56s}  -24.25d {-24d 15' 16"}
MOON_DIST:       139.62 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.35, 21.89 [deg] galactic lon,lat of the burst
ECL_COORDS:       94.88, 39.49 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 07:58:10 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     302506,   Seg_Num: 0
GRB_RA:           98.2576d {+06h 33m 01.8s} (J2000),
                  98.4480d {+06h 33m 47.5s} (current),
                  97.0800d {+06h 28m 19.1s} (1950)
GRB_DEC:         +62.7918d {+62d 47' 30.4"} (J2000),
                 +62.7853d {+62d 47' 06.9"} (current),
                 +62.8290d {+62d 49' 44.2"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       189 [cnts]
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28652.73 SOD {07:57:32.73} UT,   101.0 [sec] since BAT Trigger Time
CENTROID_X:      310.20,  raw= 310  [pixels]
CENTROID_Y:      260.58,  raw= 261  [pixels]
ROLL:            310.37 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -88.20
GRB_POS_XRT_Z:   18.62
IMAGE_URL:       sw00302506000msxps_rw.img
SUN_POSTN:       318.34d {+21h 13m 22s}  -16.08d {-16d 04' 30"}
SUN_DIST:        125.69 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.48d {+19h 45m 56s}  -24.25d {-24d 15' 14"}
MOON_DIST:       139.62 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.35, 21.89 [deg] galactic lon,lat of the burst
ECL_COORDS:       94.88, 39.49 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 07:58:18 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     302506,   Seg_Num: 0
GRB_RA:           98.2576d {+06h 33m 01.8s} (J2000),
                  98.4480d {+06h 33m 47.5s} (current),
                  97.0800d {+06h 28m 19.1s} (1950)
GRB_DEC:         +62.7918d {+62d 47' 30.4"} (J2000),
                 +62.7853d {+62d 47' 06.9"} (current),
                 +62.8290d {+62d 49' 44.2"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       189 [cnts]
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28652.73 SOD {07:57:32.73} UT,   101.0 [sec] since BAT Trigger Time
CENTROID_X:      310.20,  raw= 310  [pixels]
CENTROID_Y:      260.58,  raw= 261  [pixels]
ROLL:            310.37 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -88.20
GRB_POS_XRT_Z:   18.62
IMAGE_URL:       sw00302506000msxps_rw.img
SUN_POSTN:       318.34d {+21h 13m 22s}  -16.08d {-16d 04' 30"}
SUN_DIST:        125.69 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.49d {+19h 45m 56s}  -24.25d {-24d 15' 13"}
MOON_DIST:       139.62 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.35, 21.89 [deg] galactic lon,lat of the burst
ECL_COORDS:       94.88, 39.49 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 07:59:30 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     302506,   Seg_Num: 0
GRB_RA:           98.219d {+06h 32m 53s} (J2000),
                  98.410d {+06h 33m 38s} (current),
                  97.042d {+06h 28m 10s} (1950)
GRB_DEC:         +62.769d {+62d 46' 07"} (J2000),
                 +62.762d {+62d 45' 43"} (current),
                 +62.806d {+62d 48' 20"} (1950)
GRB_DATE:        14501 TJD;    36 DOY;   08/02/05
GRB_TIME:        28551.75 SOD {07:55:51.75} UT
TRIGGER_INDEX:   139
GRB_PHI:         -145.00 [deg]
GRB_THETA:        38.45 [deg]
DELTA_TIME:      -70.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.09 [sigma]
IMAGE_SIGNIF:    8.53 [sigma]
LC_URL:          sw00302506000msb.lc
SUN_POSTN:       318.34d {+21h 13m 22s}  -16.07d {-16d 04' 29"}
SUN_DIST:        125.69 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.50d {+19h 45m 59s}  -24.25d {-24d 15' 04"}
MOON_DIST:       139.63 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.37, 21.87 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       94.86, 39.47 [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 = 182.86,17.34 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 07:59:59 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.212d {+06h 32m 51s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 35"} (J2000)
POINT_ROLL:      310.365d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28662.71 SOD {07:57:42.71} UT,   111.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.513
N_STARS:         176
X_OFFSET:        424 [pixels]
Y_OFFSET:        544 [pixels]
X_MAX:           1383 [pixels]
Y_MAX:           1503 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00302506000msufc0110.fits
SUN_POSTN:       318.34d {+21h 13m 22s}  -16.07d {-16d 04' 28"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.50d {+19h 46m 00s}  -24.25d {-24d 15' 00"}
MOON_DIST:       139.62 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 08:00:37 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.212d {+06h 32m 51s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 35"} (J2000)
POINT_ROLL:      310.365d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28662.71 SOD {07:57:42.71} UT,   111.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.513
N_STARS:         176
X_OFFSET:        424 [pixels]
Y_OFFSET:        544 [pixels]
X_MAX:           1383 [pixels]
Y_MAX:           1503 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00302506000msufc0110.fits
SUN_POSTN:       318.34d {+21h 13m 22s}  -16.07d {-16d 04' 28"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.51d {+19h 46m 02s}  -24.25d {-24d 14' 55"}
MOON_DIST:       139.62 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [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:     Tue 05 Feb 08 08:01:33 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.212d {+06h 32m 51s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 35"} (J2000)
ROLL:            310.365d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28662.71 SOD {07:57:42.71} UT,   111.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     223891065
X_OFFSET:        856 [pixels]
Y_OFFSET:        1039 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1016
Y_GRB_POS:       1199
BINNING_INDEX:   1
IM_URL:          sw00302506000msuni0110.fits
SUN_POSTN:       318.34d {+21h 13m 23s}  -16.07d {-16d 04' 27"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.52d {+19h 46m 04s}  -24.25d {-24d 14' 47"}
MOON_DIST:       139.61 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [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:     Tue 05 Feb 08 08:01:15 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.212d {+06h 32m 51s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 35"} (J2000)
ROLL:            310.365d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28662.71 SOD {07:57:42.71} UT,   111.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     223891065
X_OFFSET:        856 [pixels]
Y_OFFSET:        1039 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1016
Y_GRB_POS:       1199
BINNING_INDEX:   1
IM_URL:          sw00302506000msuni0110.fits
SUN_POSTN:       318.34d {+21h 13m 23s}  -16.07d {-16d 04' 27"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.51d {+19h 46m 03s}  -24.25d {-24d 14' 50"}
MOON_DIST:       139.61 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [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:     Tue 05 Feb 08 08:10:37 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
ROLL:            310.372d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28768.56 SOD {07:59:28.56} UT,   216.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     223891171
X_OFFSET:        856 [pixels]
Y_OFFSET:        1039 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1016
Y_GRB_POS:       1199
BINNING_INDEX:   1
IM_URL:          sw00302506000msuni0216.fits
SUN_POSTN:       318.35d {+21h 13m 24s}  -16.07d {-16d 04' 20"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.60d {+19h 46m 24s}  -24.23d {-24d 13' 34"}
MOON_DIST:       139.58 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [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:     Tue 05 Feb 08 08:10:56 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
ROLL:            310.372d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28768.56 SOD {07:59:28.56} UT,   216.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     223891171
X_OFFSET:        856 [pixels]
Y_OFFSET:        1039 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1016
Y_GRB_POS:       1199
BINNING_INDEX:   1
IM_URL:          sw00302506000msuni0216.fits
SUN_POSTN:       318.35d {+21h 13m 24s}  -16.07d {-16d 04' 20"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.60d {+19h 46m 25s}  -24.23d {-24d 13' 32"}
MOON_DIST:       139.58 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [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:     Tue 05 Feb 08 08:09:20 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
POINT_ROLL:      310.372d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28768.56 SOD {07:59:28.56} UT,   216.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.558
N_STARS:         159
X_OFFSET:        536 [pixels]
Y_OFFSET:        719 [pixels]
X_MAX:           1495 [pixels]
Y_MAX:           1678 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00302506000msufc0216.fits
SUN_POSTN:       318.35d {+21h 13m 24s}  -16.07d {-16d 04' 21"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.59d {+19h 46m 21s}  -24.23d {-24d 13' 45"}
MOON_DIST:       139.58 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 08:21:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
POINT_ROLL:      310.372d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  29522.04 SOD {08:12:02.04} UT,   970.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.513
N_STARS:         136
X_OFFSET:        536 [pixels]
Y_OFFSET:        719 [pixels]
X_MAX:           1495 [pixels]
Y_MAX:           1678 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00302506000msufc0970.fits
SUN_POSTN:       318.36d {+21h 13m 26s}  -16.07d {-16d 04' 12"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.70d {+19h 46m 49s}  -24.20d {-24d 12' 07"}
MOON_DIST:       139.53 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [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:     Tue 05 Feb 08 08:14:54 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
POINT_ROLL:      310.373d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  29416.19 SOD {08:10:16.19} UT,   864.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.537
N_STARS:         128
X_OFFSET:        536 [pixels]
Y_OFFSET:        719 [pixels]
X_MAX:           1495 [pixels]
Y_MAX:           1678 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00302506000msufc0864.fits
SUN_POSTN:       318.35d {+21h 13m 25s}  -16.07d {-16d 04' 17"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.64d {+19h 46m 34s}  -24.22d {-24d 13' 00"}
MOON_DIST:       139.56 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 08:09:51 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
POINT_ROLL:      310.372d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28768.56 SOD {07:59:28.56} UT,   216.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.558
N_STARS:         159
X_OFFSET:        536 [pixels]
Y_OFFSET:        719 [pixels]
X_MAX:           1495 [pixels]
Y_MAX:           1678 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00302506000msufc0216.fits
SUN_POSTN:       318.35d {+21h 13m 24s}  -16.07d {-16d 04' 21"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.59d {+19h 46m 23s}  -24.23d {-24d 13' 41"}
MOON_DIST:       139.58 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN Circular #7250
C. B. Markwardt (CRESST/GSFC/UMD), M. M. Chester (PSU), J. R. Cummings (NASA/UMBC), P. A. Evans (U Leicester), A. D. Falcone (PSU), N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB), S. T. Holland (CRESST/USRA/GSFC), S. D. Hunsberger (PSU), J. A. Kennea (PSU), C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), D. Perez (U Leicester), J. L. Racusin (PSU), T. Sakamoto (NASA/UMBC), M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester), T. N. Ukwatta (GSFC/GWU) and L. Vetere (PSU) report on behalf of the Swift Team:
At 07:55:51 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080205 (trigger=302506). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 98.219, +62.769 which is
```
   RA(J2000) = 06h 32m 53s
   Dec(J2000) = +62d 46' 07"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows three roughly equal-height peaks spanning approximately 120 seconds. The peak count rate was ~1000 counts/sec (15-350 keV), at ~0 sec, ~70 sec, and ~95 sec after the trigger.
XRT began observing at 07:57:32 UT, 101 s after the BAT trigger. Using prompt downlinked data, we find a bright, fading, uncatalogued X-ray source located at RA, Dec 98.2561, 62.7913 deg which is
```
   RA(J2000)  = 06h 33m 1.46s
   Dec(J2000) = +62d 47' 30.1"
```
with an uncertainty of 3.0 arcsec (radius, 90% containment). This location is 100 arcseconds from the BAT on-board position, within the BAT error circle.
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 112 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The 3-sigma upper limit at the XRT position is 19.2 mag. 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 0.09.
Burst Advocate for this burst is C. B. Markwardt (craigm 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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 08:16:47 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     302506,   Seg_Num: 0
GRB_RA:           98.2560d {+06h 33m 01.4s} (J2000),
                  98.4464d {+06h 33m 47.1s} (current),
                  97.0784d {+06h 28m 18.8s} (1950)
GRB_DEC:         +62.7916d {+62d 47' 29.7"} (J2000),
                 +62.7851d {+62d 47' 06.1"} (current),
                 +62.8287d {+62d 49' 43.4"} (1950)
GRB_ERROR:       2.9 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  28774.00 SOD {07:59:34.00} UT,   222.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       318.35d {+21h 13m 25s}  -16.07d {-16d 04' 16"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.66d {+19h 46m 38s}  -24.21d {-24d 12' 45"}
MOON_DIST:       139.55 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.35, 21.89 [deg] galactic lon,lat of the burst
ECL_COORDS:       94.88, 39.49 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        TAM values, flux and significance fields are not valid  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper.php for details.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 08:15:23 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
POINT_ROLL:      310.373d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  29416.19 SOD {08:10:16.19} UT,   864.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.537
N_STARS:         128
X_OFFSET:        536 [pixels]
Y_OFFSET:        719 [pixels]
X_MAX:           1495 [pixels]
Y_MAX:           1678 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00302506000msufc0864.fits
SUN_POSTN:       318.35d {+21h 13m 25s}  -16.07d {-16d 04' 17"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.65d {+19h 46m 35s}  -24.22d {-24d 12' 56"}
MOON_DIST:       139.56 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [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:     Tue 05 Feb 08 08:21:00 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
POINT_ROLL:      310.372d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  29522.04 SOD {08:12:02.04} UT,   970.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.513
N_STARS:         136
X_OFFSET:        536 [pixels]
Y_OFFSET:        719 [pixels]
X_MAX:           1495 [pixels]
Y_MAX:           1678 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00302506000msufc0970.fits
SUN_POSTN:       318.36d {+21h 13m 26s}  -16.07d {-16d 04' 12"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.70d {+19h 46m 48s}  -24.20d {-24d 12' 11"}
MOON_DIST:       139.53 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 05 Feb 08 08:22:17 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
ROLL:            310.372d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  29522.04 SOD {08:12:02.04} UT,   970.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     223891924
X_OFFSET:        855 [pixels]
Y_OFFSET:        1038 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1015
Y_GRB_POS:       1198
BINNING_INDEX:   1
IM_URL:          sw00302506000msuni0970.fits
SUN_POSTN:       318.36d {+21h 13m 26s}  -16.07d {-16d 04' 11"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.71d {+19h 46m 51s}  -24.20d {-24d 12' 00"}
MOON_DIST:       139.53 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [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:     Tue 05 Feb 08 08:22:31 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     302506,   Seg_Num: 0
POINT_RA:         98.218d {+06h 32m 52s} (J2000)
POINT_DEC:       +62.776d {+62d 46' 34"} (J2000)
ROLL:            310.372d
IMG_START_DATE:  14501 TJD;    36 DOY;   08/02/05
IMG_START_TIME:  29522.04 SOD {08:12:02.04} UT,   970.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     223891924
X_OFFSET:        855 [pixels]
Y_OFFSET:        1038 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1015
Y_GRB_POS:       1198
BINNING_INDEX:   1
IM_URL:          sw00302506000msuni0970.fits
SUN_POSTN:       318.36d {+21h 13m 26s}  -16.07d {-16d 04' 11"}
SUN_DIST:        125.68 [deg]   Sun_angle= -9.3 [hr] (East of Sun)
MOON_POSTN:      296.71d {+19h 46m 51s}  -24.20d {-24d 11' 58"}
MOON_DIST:       139.53 [deg]
MOON_ILLUM:      4 [%]
GAL_COORDS:      152.36, 21.87 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       94.86, 39.48 [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 #7251
W. Li, D. Perley, R. J. Foley, A. V. Filippenko, and J. S. Bloom, University of California, Berkeley, on behalf of the KAIT GRB team, report:
The robotic 0.76-m Katzman Automatic Imaging Telescope (KAIT) at Lick Observatory observed GRB 080205 detected with Swift (Trigger 302506) The automatic sequence started at 07:56:56, 64.3 s after the burst. The BAT location has been monitored in V, I, and clear filters, with varying exposure times. Our image processing pipeline found a new object within the BAT error circle, with the following position:
```
R. A. = 06:33:00.64
DEC.  = +62:47:32.0  (J2000)
```
The OA has magnitude of 17.0 (calibrated with USNO B1.0) in a 20s unfiltered exposure started at 08:01:45 UT, and show apparent variability. Further observations are on-going.
This message may be cited.
GCN Circular #7252
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
Using 794 s of overlapping XRT Photon Counting mode and UVOT V-band data for GRB 080205, 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 = 98.25223, +62.79186 which is equivalent to:
```
RA (J2000): 06h 33m 0.54s
Dec (J2000): +62d 47' 30.7"
```
with an uncertainty of 2.0 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, astro-ph/0708.0986 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 #7253
S.R. Oates (MSSL-UCL) and C.B Markwardt (CRESST/GSFC/UMD) report on behalf of the UVOT team.
The Swift/UVOT observed the field of GRB 080205 (trigger #302506) starting 111 seconds after the BAT trigger (Markwardt et al., GCN Circ. 7250). We detect the optical afterglow at the position:
```
RA  (J2000) = 06:33:00.62
Dec (J2000) =+62:47:31.98
```
with an error of about 0.5". This is consistent with the position reported by Li et al.(GCN 7251) and lies within the revised XRT error circle (Osborne et al., GCN 7252).
The optical afterglow initially brightens in the first few hundred seconds after the trigger and then begins to decay at around ~T+1000s. The afterglow is detected in the white and v filters only. The lack of detection in the b, u and uv filters suggests that this GRB is at a z ~ 4.0.
The magnitudes and 3-sigma upper limits are listed:
```
Filter    Tstart(s) Tstop(s) Exp    Magnitude
--------------------------------------------------------------
white       111	    211	      98   20.37 +/- 0.28 (3.7-sigma)
            864	    964	      98   19.76 +/- 0.17 (6.2-sigma)
            5436    5636     196   20.59 +/- 0.25 (4.2-sigma)
v           217     617	     393   18.07 +/- 0.09 (11.4-sigma)
            970	    1370     393   19.02 +/- 0.20 (5.4-sigma)
b           697     686	     451   20.83   (3 sigma UL)
u           672     6664     471   20.45   (3 sigma UL)
uvw1        647     6458     286   20.13   (3 sigma UL)
uvm2        622     7525     329   20.03   (3 sigma UL)
uvw2        727     7279     452   20.39   (3 sigma UL)
--------------------------------------------------------------
```
The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 0.091 mag in the direction of the burst (Schlegel et al. 1998).
GCN Circular #7254
W. Li, D. Perley, and A. V. Filippenko, University of California, Berkeley, on behalf of the KAIT GRB team, report:
We report further analysis of the KAIT observations of GRB 080205 (Swift Trigger 302506; Markwardt et al. GCN 7250) announced by Li et al. (GCN 7251). Preliminary reduction of the unfiltered data shows that the optical afterglow (OA) has a nearly constant brightness of mag 18.1 from t = 65 s to 90 s, declines to mag 19.1 by t = 171 s, rises to mag 16.9 by t = 537 s, and has a steep power-law decline (with index around -1.6) thereafter until at least t = 50 min. The OA is also detected in multiple I-band and V-band images, suggesting that the redshift of the GRB is lower than roughly 4 or 5. The overall behavior of the OA of GRB 080205 is similar to that of GRB 060206 (Monfardini et al. 2006, ApJ, 648, 1125).
This message may be cited.
GCN Circular #7255
R.L.C. Starling (U. Leicester) and C.B. Markwardt (CRESST/GSFC/UMD) report on behalf of the Swift XRT team:
Swift XRT observations of GRB 080205 (trigger=302506) began 101 seconds after the BAT trigger (Markwardt et al., GCN 7250) in Windowed Timing mode and continued in Photon Counting (PC) mode 208 s after the trigger. The enhanced XRT position is given in Osborne et al. GCN 7252.
The light curve out to 13.5 ks post-trigger can be fit with a power law with two breaks. The initial steep decay has a slope of alpha1 = 4.5+/-0.3 breaking at Tbk1 = 203+20/-8 s to a plateau with slope alpha2 = 0.4+/-0.4. The plateau phase ends at Tbk2 = 570+170/-120 s and the decay continues with alpha3 = 1.8+/-0.1.
We fit the first orbit PC mode spectrum, totalling 1.5ks of data and covering T0+208s-T0+1728s, with an absorbed power law. We measure a photon index of Gamma = 1.8+/-0.2 and intrinsic absorption of N_H = (1.0+/-0.7)e21 cm^-2 (at z=0), whilst fixing the Galactic absorption at 7.1e20 cm^-2 (Kalberla et al. 2005). The 0.5-10 keV observed (unabsorbed) flux is 6e-11 (7.2e-11) erg/cm^2/s. The count rate to flux conversion is approximately 1 count/s = 4.7e-11 erg/cm^2/s.
The predicted count rate at T+24h is 2e-4 counts/s, or 1e-14 erg/cm^2/s.
This is an official product of the Swift XRT team.
GCN Circular #7257
J. Cummings (GSFC/UMBC), S. D. Barthelmy (GSFC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), 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+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 080205 (trigger #302506) (Markwardt, et al., GCN Circ. 7250). The BAT ground-calculated position is RA, Dec = 98.261, 62.782 deg which is
```
   RA(J2000)  = 6h 33m 2.6s 
   Dec(J2000) = 62d 46' 56" 
```
with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 52%.
The mask-weighted light curve shows at least 3 peaks at about T+2, T+65, and T+93 sec. T90 (15-350 keV) is 106.5 +- 5.0 sec (estimated error including systematics).
The time-averaged spectrum from T-10.1 to T+105.3 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.08 +- 0.12. The fluence in the 15-150 keV band is 2.1 +- 0.1 x 10^-06 erg/cm2. The 1-sec peak photon flux measured from T+0.22 sec in the 15-150 keV band is 1.4 +- 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/302506/BA/
GCN Circular #7258
E. Rol (U. of Leicester) and J. Anderson (LJMU) report for a larger collaboration:
We observed the position of GRB 080205 with the Isaac Newton Telescope equipped with the Wide Field Camera at Roque de Los Muchachos. Observations were carried out in R-band, for 30 minutes starting at 23:05 UT.
We detect the afterglow with a magnitude of R = 23.50 +/- 0.11; our photometry is calibrated to several USNO B1.0 R2 magnitudes.
Compared with the early (unfiltered) 17.0 magnitude KAIT measurement (Li et al., GCN 7251), this indicates a slightly shallower powerlaw decay than the initial -1.6 (Li et al, GCN 7254), suggestive of underlying contamination by a host galaxy. At the source position, however, there is no clear evidence for extended emission.
GCN Circular #7259
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 080205 (GCN 7250) at a frequency of 8.46 GHz on 2008 February 6.13 UT. The GRB is undetected and the peak radio flux at the SWIFT-XRT position (GCN 7252) is 30 +/- 41 uJy.
The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."
GCN Circular #7260
F. Terra, (Second University of Roma "Tor Vergata"), G. Greco, C. Bartolini, A. Guarnieri, A. Piccioni (Bologna University), D. Nanni(INAF/OAR and Second University of Roma "Tor Vergata"), G. Pizzichini (INAF/IASF Bologna), G. Gavazzi (Milano-Bicocca University) and A. De Blasi (INAF Bologna) report:
We observed the field of GRB 080205 (Markwardt et al. GCN 7250) with the 152 cm Loiano telescope under modest sky (cirrus) and seeing (2.5") conditions. Our observation was carried out in R-band, for 20 minutes starting on 2008 February 5, 22:28 UT.
We do not detect the OT reported by Li et al. (GCN 7251) to a limiting magnitude of R ~ 20 based on the NOMAD catalog.
GCN Circular #7261
D.Kuvshinov, V. Lipunov, V.Kornilov, E.Gorbovskoy, N.Tyurina, A.Belinski, A.Krylov, N.Shatskiy, A.Sankovich, V.Vladimirov, P.Gritsyk, V.Vibornov, A.Kuznetsov, P.Balanutsa Sternberg Astronomical Institute, Moscow Union 'Optic'
MASTER robotic system (http://observ.pereplet.ru) observed GRB 080205 (GRB_TIME is 08:21:36 UT, Markwardt et al. GCN Circ 7250 ) in survey mode (the GRB was at day time for Moscow). The weather was good. We have 31 images from 16:22:35 to 17:24:46 (481 - 545 minutes after the GRB time) with mean time: 16 54 UT (513 min after GRB time).
The unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B).
The robot not find OT brighter then 19.5m at KAIT's position (Li et al., GCN Circ 7251). Our limit is agreement with power low line between Li et al.,(GCN Circ 7254) and Rol & Anderson (GCN CIRC 7258) observations.
This message can be cited. Mailto: lipunov@sai.msu.ru
GCN Circular #7262
Stefano Sposetti (Gnosca, Switzerland) reports to the AAVSO International High Energy Network the following optical observations of GRB080205 (GCN #7250, Markwardt et al.):
Stefano Sposetti reports an upper limit on the optical afterglow of GRB080205 reported by Li et al (GCN #7251). The reported afterglow position was observed for a total of 7200 seconds using a 0.4-meter Newtonian with an SBIG ST8XE CCD and no filter. Observations commenced on 2008 February 05.74, approximately 9.5 hours after the Swift-BAT detection. The afterglow was not detected, and an upper limit of CR=21.0 was obtained with a S/N of 3, using USNO A2.0 magnitudes as comparisons. This upper limit is consistent with the R < 20 upper limit by Terra et al. (GCN #7260) at 2008 February 05.94, and the R = 23.5 detection at 2008 Feb 05.96 by Rol et al. (GCN #7258).
A detailed report on these observations is available on the AAVSO website at ftp://ftp.aavso.org/grb/StefanoSposetti_GRB080205_2454502.86049_.txt
A fits image is available at ftp://ftp.aavso.org/grb/StefanoSposetti_GRB080205_2454502.86049_.fits
The AAVSO thanks the Curry Foundation for their continued support of the AAVSO International High Energy Network.
GCN Circular #7275
R. Burenin, A. Tkachenko, M. Pavlinsky, R. Sunyaev (IKI), I. Khamitov, Z. Eker (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.), I. Bikmaev, N. Sakhibullin (KSU/AST)
report:
The optical counterpart of GRB 080205 (Li et al., GCN 7251) was observed with Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey). We made two sets of BVRI images on Feb 05 approximately at 18:00 and 22:00 UT (10 and 14 hours after the burst). The afterglow is detected near the limit of our images, i.e. near about R=23.5 (USNO B1.0 calibrated), in agreement with later INT observation (Rol and Anderson, GCN 7258).
GCN Circular #7278
K. Kinugasa (Gunma Astronomical Observatory) report:
The field of GRB 080205 (Markwardt et al. GCN 7250) was observed with the 150 cm telescope of the Gunma Astronomical Observatory. Starting at 14:42 UT (6.35 hours after the burst), Rc, and Ic frames were acquired for 15 and 18 minutes, respectively.
We do not identify the optical counterpart reported by Li et al. (GCN 7251). to limiting magnitudes of R~20 and I~18 relative to USNO-B1.0 magnitudes.
GCN Report 112.1
GCN_Report 112.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_112_1.pdf by C.B. Markwardt at CRESST/U.Md/NASA/GSFC titled: "Final Swift observations of GRB 080205"
GCN Circular #7332
V. Rumyantsev (CrAO), V. Biryukov (SAI, MSU), E. Klunko (ISTP), M. Andreev (Terskol Branch of Institute of Astronomy), A.J. Castro-Tirado (IAA-CSIC), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report:
We observed the afterglow (Li at al, GCN 7251), of GRB080205 (Palmer et al, GCN7250) with 1.5m telescope of Sayan observatory (Mondy) on Feb.05 in BR and Feb.06; with Zeiss-600 of Mt. Terskol observatory on Feb.05 in R; and with CrAO Shajn 2.6m telescope in BVRI on Feb.05, and on Feb.06. In CrAO observations we detected afterglow in R, V and not detected in B, I on Feb.05. We do not detect afterglow in any observations on Feb.06.
```
T0+       Exposure  R_mag (err)   UL    Site     seeing
(mean)

0.226 d  40x60 s   n/d           21.1  Mondy    2.2"
0.379 d  30x60 s   22.26 (0.19)  23.0  CrAO     1.5"
0.409 d  20x90 s   n/d           20.3  Terskol  2.0"
0.548 d  34x60 s   22.26 (0.15)  23.3  CrAO     1.4"
0.772 d  40x60 s   n/d           22.4  CrAO     1.4"
1.530 d 123x60 s   n/d           23.8  CrAO     1.7"
```
Preliminary photometry reduction is based on USNO-B1.0 stars.
Taking together KAIT (Li at al. GCN 7254) and ING (Rol et al. GCN 7258) observations one can suggest some episodes of a light curve of the GRB080205 afterglow: the steep decline of light curve with power law index about -1.6 between 537 s - 50 m (Li at al. GCN 7254), the shallow decay with power law index of -0.9 between T0+ 50m - 9h, plateau (or rebrightening) between T0+ 9h - 13h, and after then very steep decline. The data after ~50 m after burst onset is also compatible with a single power law with index -1.1 and a bump between 9h - 13h. Since we do not detect afterglow on Feb.06 (R>23.8) it is most probably that the previous phases of the light curve is not contaminated by a host galaxy. Our non detection of the afterglow in B-filter confirms the redshift less than ~4 (Oates at al. GCN 7253, Perley at al. GCN 7254).
The message may be cited.
arXiv:1504.02482 SED fit of host: 2.72+0.24-0.74

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Jochen Greiner, last update: 07-Jul-2015 [Disclaimer]