Gamma-ray Burst 060319

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 00:57:05 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     202035,   Seg_Num: 0
GRB_RA:          176.370d {+11h 45m 29s} (J2000),
                 176.453d {+11h 45m 49s} (current),
                 175.696d {+11h 42m 47s} (1950)
GRB_DEC:         +59.990d {+59d 59' 25"} (J2000),
                 +59.956d {+59d 57' 20"} (current),
                 +60.268d {+60d 16' 05"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1977 [image_cnts]
TRIGGER_DUR:     72.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        -1.07 SOD {00:00:-1.-6} UT
BKG_DUR:         0 [sec]
GRB_DATE:        13813 TJD;    78 DOY;   06/03/19
GRB_TIME:        3342.92 SOD {00:55:42.92} UT
GRB_PHI:         143.05 [deg]
GRB_THETA:        10.81 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.87 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +0  +0  +0 +51  +1 
SUN_POSTN:       358.43d {+23h 53m 43s}   -0.68d {-00d 40' 52"}
SUN_DIST:        120.71 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.72d {+14h 38m 52s}  -19.02d {-19d 01' 28"}
MOON_DIST:        86.42 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.25 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      143.19, 51.43 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
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 = 289.73,17.02 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 00:58:43 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.357d {+11h 45m 26s} (J2000)
POINT_DEC:       +60.003d {+60d 00' 12"} (J2000)
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  3476.74 SOD {00:57:56.74} UT,   133.8 [sec] since BAT Trigger Time
COUNTS:          53    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        4    Max_iter_allowed= 4
ERROR_CODE:      2
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        Algorithm did not converge; too many interations.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:03:32 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.004d {+60d 00' 16"} (J2000)
POINT_ROLL:      357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  3587.72 SOD {00:59:47.72} UT,   244.8 [sec] since BAT Trigger Time
FILTER:          4, UVM2
BKG_MEAN:        0.013
N_STARS:         9
X_OFFSET:        397 [pixels]
Y_OFFSET:        627 [pixels]
X_MAX:           1356 [pixels]
Y_MAX:           1586 [pixels]
DET_THRESH:      2
PHOTO_THRESH:    2
SL_URL:          sw00202035000msufc_010244.fits
SUN_POSTN:       358.43d {+23h 53m 44s}   -0.68d {-00d 40' 46"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.77d {+14h 39m 05s}  -19.05d {-19d 02' 43"}
MOON_DIST:        86.47 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:04:14 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.004d {+60d 00' 16"} (J2000)
ROLL:            357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  3587.72 SOD {00:59:47.72} UT,   244.8 [sec] since BAT Trigger Time
FILTER:          4, UVM2
EXPOSURE_ID:     164422788
X_OFFSET:        717 [pixels]
Y_OFFSET:        947 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       877
Y_GRB_POS:       1107
BINNING_INDEX:   1
IM_URL:          sw00202035000msuni_010244.fits
SUN_POSTN:       358.43d {+23h 53m 44s}   -0.68d {-00d 40' 45"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.78d {+14h 39m 06s}  -19.05d {-19d 02' 52"}
MOON_DIST:        86.47 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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:     Sun 19 Mar 06 01:05:42 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.004d {+60d 00' 16"} (J2000)
ROLL:            357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  3587.72 SOD {00:59:47.72} UT,   244.8 [sec] since BAT Trigger Time
FILTER:          4, UVM2
EXPOSURE_ID:     164422788
X_OFFSET:        717 [pixels]
Y_OFFSET:        947 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       877
Y_GRB_POS:       1107
BINNING_INDEX:   1
IM_URL:          sw00202035000msuni_010244.fits
SUN_POSTN:       358.43d {+23h 53m 44s}   -0.68d {-00d 40' 44"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.79d {+14h 39m 09s}  -19.05d {-19d 03' 09"}
MOON_DIST:        86.48 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:00:33 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.357d {+11h 45m 26s} (J2000)
POINT_DEC:       +60.003d {+60d 00' 12"} (J2000)
POINT_ROLL:      357.580d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  3481.50 SOD {00:58:01.50} UT,   138.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.170
N_STARS:         26
X_OFFSET:        397 [pixels]
Y_OFFSET:        627 [pixels]
X_MAX:           1356 [pixels]
Y_MAX:           1586 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00202035000msufc0138.fits
SUN_POSTN:       358.43d {+23h 53m 43s}   -0.68d {-00d 40' 49"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.75d {+14h 38m 59s}  -19.04d {-19d 02' 09"}
MOON_DIST:        86.45 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:02:04 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     202035,   Seg_Num: 0
GRB_RA:          176.370d {+11h 45m 29s} (J2000),
                 176.453d {+11h 45m 49s} (current),
                 175.696d {+11h 42m 47s} (1950)
GRB_DEC:         +59.990d {+59d 59' 25"} (J2000),
                 +59.956d {+59d 57' 20"} (current),
                 +60.268d {+60d 16' 05"} (1950)
GRB_DATE:        13813 TJD;    78 DOY;   06/03/19
GRB_TIME:        3342.92 SOD {00:55:42.92} UT
TRIGGER_INDEX:   20000
GRB_PHI:         143.05 [deg]
GRB_THETA:        10.81 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     72.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.87 [sigma]
LC_URL:          sw00202035000msb.lc
SUN_POSTN:       358.43d {+23h 53m 43s}   -0.68d {-00d 40' 47"}
SUN_DIST:        120.70 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.76d {+14h 39m 02s}  -19.04d {-19d 02' 26"}
MOON_DIST:        86.45 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.25 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      143.19, 51.43 [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 an image 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 = 289.73,17.02 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:01:41 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.357d {+11h 45m 26s} (J2000)
POINT_DEC:       +60.003d {+60d 00' 12"} (J2000)
ROLL:            357.580d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  3481.50 SOD {00:58:01.50} UT,   138.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     164422682
X_OFFSET:        717 [pixels]
Y_OFFSET:        947 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       877
Y_GRB_POS:       1107
BINNING_INDEX:   1
IM_URL:          sw00202035000msuni0138.fits
SUN_POSTN:       358.43d {+23h 53m 43s}   -0.68d {-00d 40' 48"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.76d {+14h 39m 01s}  -19.04d {-19d 02' 22"}
MOON_DIST:        86.46 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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:     Sun 19 Mar 06 01:01:25 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.357d {+11h 45m 26s} (J2000)
POINT_DEC:       +60.003d {+60d 00' 12"} (J2000)
POINT_ROLL:      357.580d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  3481.50 SOD {00:58:01.50} UT,   138.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.170
N_STARS:         26
X_OFFSET:        397 [pixels]
Y_OFFSET:        627 [pixels]
X_MAX:           1356 [pixels]
Y_MAX:           1586 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00202035000msufc0138.fits
SUN_POSTN:       358.43d {+23h 53m 43s}   -0.68d {-00d 40' 48"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.75d {+14h 39m 01s}  -19.04d {-19d 02' 19"}
MOON_DIST:        86.46 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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:     Sun 19 Mar 06 01:04:56 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.004d {+60d 00' 16"} (J2000)
POINT_ROLL:      357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  3587.72 SOD {00:59:47.72} UT,   244.8 [sec] since BAT Trigger Time
FILTER:          4, UVM2
BKG_MEAN:        0.013
N_STARS:         9
X_OFFSET:        397 [pixels]
Y_OFFSET:        627 [pixels]
X_MAX:           1356 [pixels]
Y_MAX:           1586 [pixels]
DET_THRESH:      2
PHOTO_THRESH:    2
SL_URL:          sw00202035000msufc_010244.fits
SUN_POSTN:       358.43d {+23h 53m 44s}   -0.68d {-00d 40' 45"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.78d {+14h 39m 08s}  -19.05d {-19d 03' 00"}
MOON_DIST:        86.48 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:02:42 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.357d {+11h 45m 26s} (J2000)
POINT_DEC:       +60.003d {+60d 00' 12"} (J2000)
ROLL:            357.580d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  3481.50 SOD {00:58:01.50} UT,   138.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     164422682
X_OFFSET:        717 [pixels]
Y_OFFSET:        947 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       877
Y_GRB_POS:       1107
BINNING_INDEX:   1
IM_URL:          sw00202035000msuni0138.fits
SUN_POSTN:       358.43d {+23h 53m 43s}   -0.68d {-00d 40' 47"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.76d {+14h 39m 03s}  -19.04d {-19d 02' 34"}
MOON_DIST:        86.46 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:12:11 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.004d {+60d 00' 16"} (J2000)
POINT_ROLL:      357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  4211.52 SOD {01:10:11.52} UT,   868.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.178
N_STARS:         22
X_OFFSET:        397 [pixels]
Y_OFFSET:        627 [pixels]
X_MAX:           1356 [pixels]
Y_MAX:           1586 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00202035000msufc_020868.fits
SUN_POSTN:       358.44d {+23h 53m 45s}   -0.68d {-00d 40' 37"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.84d {+14h 39m 23s}  -19.07d {-19d 04' 24"}
MOON_DIST:        86.52 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:13:01 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.004d {+60d 00' 16"} (J2000)
POINT_ROLL:      357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  4211.52 SOD {01:10:11.52} UT,   868.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.178
N_STARS:         22
X_OFFSET:        397 [pixels]
Y_OFFSET:        627 [pixels]
X_MAX:           1356 [pixels]
Y_MAX:           1586 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00202035000msufc_020868.fits
SUN_POSTN:       358.44d {+23h 53m 45s}   -0.68d {-00d 40' 37"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.85d {+14h 39m 24s}  -19.08d {-19d 04' 34"}
MOON_DIST:        86.52 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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:     Sun 19 Mar 06 01:14:03 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.004d {+60d 00' 16"} (J2000)
ROLL:            357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  4211.52 SOD {01:10:11.52} UT,   868.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     164423412
X_OFFSET:        717 [pixels]
Y_OFFSET:        947 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       877
Y_GRB_POS:       1107
BINNING_INDEX:   1
IM_URL:          sw00202035000msuni_020868.fits
SUN_POSTN:       358.44d {+23h 53m 45s}   -0.68d {-00d 40' 36"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.86d {+14h 39m 26s}  -19.08d {-19d 04' 46"}
MOON_DIST:        86.53 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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:     Sun 19 Mar 06 01:14:56 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.004d {+60d 00' 16"} (J2000)
ROLL:            357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  4211.52 SOD {01:10:11.52} UT,   868.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     164423412
X_OFFSET:        717 [pixels]
Y_OFFSET:        947 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       877
Y_GRB_POS:       1107
BINNING_INDEX:   1
IM_URL:          sw00202035000msuni_020868.fits
SUN_POSTN:       358.44d {+23h 53m 45s}   -0.68d {-00d 40' 35"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.87d {+14h 39m 28s}  -19.08d {-19d 04' 56"}
MOON_DIST:        86.53 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:19:01 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.005d {+60d 00' 16"} (J2000)
POINT_ROLL:      357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  4316.73 SOD {01:11:56.73} UT,   973.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.125
N_STARS:         24
X_OFFSET:        397 [pixels]
Y_OFFSET:        627 [pixels]
X_MAX:           1356 [pixels]
Y_MAX:           1586 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00202035000msufc_030973.fits
SUN_POSTN:       358.44d {+23h 53m 46s}   -0.68d {-00d 40' 31"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.90d {+14h 39m 36s}  -19.10d {-19d 05' 44"}
MOON_DIST:        86.56 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Mar 06 01:19:51 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.005d {+60d 00' 16"} (J2000)
POINT_ROLL:      357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  4316.73 SOD {01:11:56.73} UT,   973.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.125
N_STARS:         24
X_OFFSET:        397 [pixels]
Y_OFFSET:        627 [pixels]
X_MAX:           1356 [pixels]
Y_MAX:           1586 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00202035000msufc_030973.fits
SUN_POSTN:       358.44d {+23h 53m 46s}   -0.68d {-00d 40' 30"}
SUN_DIST:        120.69 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.91d {+14h 39m 38s}  -19.10d {-19d 05' 54"}
MOON_DIST:        86.56 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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:     Sun 19 Mar 06 01:20:15 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.005d {+60d 00' 16"} (J2000)
ROLL:            357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  4316.73 SOD {01:11:56.73} UT,   973.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     164423517
X_OFFSET:        717 [pixels]
Y_OFFSET:        947 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       877
Y_GRB_POS:       1107
BINNING_INDEX:   1
IM_URL:          sw00202035000msuni_030973.fits
SUN_POSTN:       358.44d {+23h 53m 46s}   -0.68d {-00d 40' 29"}
SUN_DIST:        120.68 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.91d {+14h 39m 39s}  -19.10d {-19d 05' 58"}
MOON_DIST:        86.56 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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:     Sun 19 Mar 06 01:21:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     202035,   Seg_Num: 0
POINT_RA:        176.362d {+11h 45m 27s} (J2000)
POINT_DEC:       +60.005d {+60d 00' 16"} (J2000)
ROLL:            357.586d
IMG_START_DATE:  13813 TJD;    78 DOY;   06/03/19
IMG_START_TIME:  4316.73 SOD {01:11:56.73} UT,   973.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     164423517
X_OFFSET:        717 [pixels]
Y_OFFSET:        947 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       877
Y_GRB_POS:       1107
BINNING_INDEX:   1
IM_URL:          sw00202035000msuni_030973.fits
SUN_POSTN:       358.44d {+23h 53m 46s}   -0.67d {-00d 40' 28"}
SUN_DIST:        120.68 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      219.92d {+14h 39m 41s}  -19.10d {-19d 06' 13"}
MOON_DIST:        86.57 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      137.35, 55.24 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      143.17, 51.44 [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_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #4885
H. Z. Ziaeepour (UCL-MSSL), S. D. Barthelmy (GSFC), A. P. Beardmore (U Leicester), A. J. Blustin (UCL-MSSL), D. N. Burrows (PSU), J. R. Cummings (NASA/ORAU), N. Gehrels (NASA/GSFC), J. A. Kennea (PSU), F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), E. Rol (U Leicester) and T. Sakamoto (NASA/ORAU) report on behalf of the Swift Team:
At 00:55:42 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 060319 (trigger=202035). Swift slewed immediately to the burst. The BAT on-board calculated location is RA,Dec 176.370, +59.990 {11h 45m 29s, +59d 59' 25"} (J2000) with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peaked structure with a duration of about 15 sec. The peak count rate was ~2000 counts/sec (15-350 keV), at ~4 sec after the trigger.
The XRT began taking data at 00:57:56 UT, 134 seconds after the BAT trigger. The XRT on-board centroid algorithm did not find a source in the image and no prompt position is available. We are waiting for down-linked data to detect and determine a position for the source.
UVOT took a finding chart exposure of 100 seconds with the WHITE filter starting 140 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 25% of the BAT error circle. The typical 3-sigma upper limit has been about 18th mag. The 8'x8' region for the list of sources generated on-board covers 100% of the BAT error circle. The list of sources is typically complete to about 18.0 mag. No correction has been made for extinction.
GCN Circular #4886
J. A. Kennea, D. N. Burrows (PSU) and A. P. Beardmore (U Leicester) report on behalf of the Swift/XRT team:
We report on a preliminary analysis of downlinked data from GRB060319 (GCN 4885) from the Swift/XRT. We find a previously uncatalogued, fading point source at the following coordinates:
```
RA(J2000):   11:45:33.7
Dec(J2000): +60:00:40.5
```
with an estimated uncertainty of 5 arcseconds radius (90% containment).
GCN Circular #4887
Richard J. Cool (Arizona), Daniel J. Eisenstein (Arizona), David W. Hogg (NYU), Michael R. Blanton (NYU), David J. Schlegel (LBNL), J. Brinkmann (APO), Donald Q. Lamb (Chicago), Donald P. Schneider (PSU), and Daniel E. Vanden Berk (PSU) report:
The Sloan Digital Sky Survey (SDSS) imaged the field of burst GRB060319 prior to the burst. As these data should be useful as a pre-burst comparison and for calibrating photometry, we are supplying the images and photometry measurements for this GRB field to the community.
Data from the SDSS, including 5 FITS images, 3 JPGS, and 3 files of photometry and astrometry, are being placed at http://mizar.as.arizona.edu/~grb/public/GRB060319
We supply FITS images in each of the 5 SDSS bands of a 8'x8' region centered on the GRB position (ra=176.370 (11:45:28.8), dec=59.9900 (59:59:24.0); GCN 4885), as well as 3 gri color-composite JPGs (with different stretches). The units in the FITS images are nanomaggies per pixel. A pixel is 0.396 arcsec on a side. A nanomaggie is a flux-density unit equal to 10^-9 of a magnitude 0 source or, to the extent that SDSS is an AB system, 3.631e-6 Jy. The FITS images have WCS astrometric information.
In the file GRB060319_sdss.calstar.dat, we report photometry and astrometry of 201 bright stars (r<20.5) within 15' of the burst location. The magnitudes presented in this file are asinh magnitudes as are standard in the SDSS (Lupton 1999, AJ, 118, 1406). Beware that some of these stars are not well-detected in the u-band; use the errors and object flags to monitor data quality.
In the files GRB060319_sdss.objects_flux.dat and GRB060319_sdss.objects_magnitudes.dat, we report photometry of 414 objects detected within 6' of the GRB position. We have removed saturated objects and objects with model magnitudes fainter than 23.0 in the r-band. The fluxes listed in GRB060319_sdss.objects_flux.dat are in nanomaggies while the magnitudes listed in GRB060319_sdss.objects_magnitudes.dat are asinh magnitudes.
All quantities reported are standard SDSS photometry, meaning that they are very close to AB zeropoints and magnitudes are quoted in asinh magnitudes. Photometric zeropoints are known to about 2% rms. None of the photometry is corrected for dust extinction. The Schlegel, Finkbeiner, and Davis (1998) predictions for this region are A_U=0.110 mag, A_g=0.081 mag, A_r = 0.059 mag, A_i=0.044 mag, and A_z=0.031 mag.
The file GRB060319_sdss.spectro.dat contains a list of the 1 objects with SDSS spectroscopy within 6 arcminutes of the GRB position. In addition to the redshift and 1-sigma error for each object, this file also lists the object spectroscopic classification.
SDSS astrometry is generally better than 0.1 arcsecond per coordinate. Users requiring high precision astrometry should take note that the SDSS astrometric system can differ from other systems such as those used in other notices; we have not checked the offsets in this region.
More detailed information pertaining to our SDSS GRB releases can be found in our initial data release paper (Cool et al. 2006, astro-ph/0601218). See the SDSS DR4 documentation for more details: http://www.sdss.org/dr4.
These data have been reduced using a slightly different pipeline than that used for SDSS public data releases. We cannot guarantee that the values here will exactly match those in the data release in which these data are included. In particular, we expect the photometric calibrations to differ by of order 0.01 mag.
This note may be cited, but please also cite the SDSS data release paper, Adelman-McCarthy et al. (2006, ApJS, in press, astro-ph/0507711), when using the data or referring to the technical documentation.
GCN Circular #4888
V. Lipunov, V.Kornilov, D.Kuvshinov, N.Tyurina, A.Belinski, E.Gorbovskoy, A.Krylov, G.Borisov, A.Sankovich, M.Sinitsin, P.Gritsyk, S.Korobkin
Sternberg Astronomical Institute, Moscow Union 'Optic' MASTER robotic system (http://observ.pereplet.ru) responded to GRB060319.0 (GRB_TIME is 2006-03-19 00:55:42.92) by all cameras.
The first unfiltred image was at 2006-03-19 00:58:24.96 UT, 80 s after notice time and 162 after the GRB time The first spectral image was at 2006-03-19 00:58:33 UT, 88 s after notice time and 170 after the GRB time
The unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B). The robot not find OT-candidate in error box brighter then 17.7 (s/n=3).
The reduction is continuing. This work is supported by RFFI 04-02-16411 grant. This message can be cited. Mailto: lipunov@sai.msu.ru
GCN Circular #4889
A. Melandri, A. Gomboc, C.G. Mundell, C. Guidorzi, A. Monfardini, C.J. Mottram, R.J. Smith, I.A. Steele, D. Carter, M. Burgdorf, S. Kobayashi, D. Bersier, M.F. Bode (Liverpool JMU) report:
"The 2-m Liverpool Telescope followed up the field of GRB060319 (Ziaeepour et al., GCN 4885) and started observing its position about 7.0 minutes after the GRB.
The automatic "detection mode" procedure did not reveal any obvious afterglow candidate at the preliminary XRT position reported by Kennea et al. (GCN 4886), brighter than about R~19 mag from 6x10-sec images, confirmed by visual inspection.
Limiting magnitude has been derived with reference to USNOB1. Further analysis is still ongoing."
GCN Circular #4890
P. D'Avanzo (INAF-OAB), G.L. Israel (INAF-OARm) R. Cosentino (TNG) report on behalf of a larger collaboration:
We observed the field of GRB 060319 (Ziaeepour et al., GCN 4885) with the 3.6 m TNG italian telescope sited in Canary Island equipped with the DOLORES camera. We performed five minutes of R-band imaging, starting on March 19.16 UT (about 3 hours after the burst).
We do not find any new source inside the XRT error box ((Kennea et al., GCN 4886) up to a magnitude limit of R > 23 (3sigma confidence) with respect to the USNOB1 catalog.
This message can be cited.
GCN Circular #4891
T. Sakamoto (GSFC/ORAU), L. Barbier (GSFC), S. Barthelmy (GSFC), J. Cummings (GSFC/ORAU), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger ((BYU-Idaho), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), G. Sato (ISAS), J. Tueller (GSFC)
Using the data set from T-299 to T+303 sec from the recent telemetry downlink, we report further analysis of BAT GRB 060319 (trigger #202035) (Ziaeepour, et al., GCN 4885). The BAT ground-calculated is RA,Dec = 176.366, 60.041 deg {11h 45m 27.7s, 60d 2' 29.3"} (J2000) +- 2.3 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted light curve shows two peaks. The first and second spikes peak around T+4 sec and T+12 sec respectively. Due to the pre-plan target observation, GRB 060319 was outside of the BAT FOV before T-60 sec. Thus, we do not know any activity about GRB 060319 before T-60 sec. T90 (15-350 keV) is 12.0 +- 1 sec (estimated error including systematics).
The time-averaged spectrum from T+1.0 to T+18.0 is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.35 +- 0.27. The fluence in the 15-150 keV band is 2.7 +- 0.4 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+4.00 sec in the 15-150 keV band is 1.1 +- 0.1 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
GCN Circular #4892
V. Lipunov, V.Kornilov, D.Kuvshinov, N.Tyurina, A.Belinski, E.Gorbovskoy, A.Krylov, G.Borisov, A.Sankovich, M.Sinitsin, P.Gritsyk, S.Korobkin
Sternberg Astronomical Institute, Moscow Union 'Optic' MASTER robotic system (http://observ.pereplet.ru) responded to GRB060319.0 (Ziaeepour, et al., GCN 4885 ) by all cameras (unfiltred, R-filtred, spectral and high time resolution).
The first unfiltred image was at 2006-03-19 00:58:24.96 UT, 80 s after notice time and 162 after the GRB time The first spectral image was at 2006-03-19 00:58:33 UT, 88 s after notice time and 170 after the GRB time. There is no OT brighter than 17.7 . We have aboute 50 unfiltered images. The limit of sum of first 10 best images is about 19.5 (s/n=3). The unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B). We do not see any new sources inside XRT position Kennea et al. (GCN 4886) brighter 19.5 . We see faint uncatalogizeted object near but outside XRT position Kennea et al. (GCN 4886). The magnitude is about 19.0 at images between 3 - 8 minutes after GRB time.
```
ra = 11 45 31.59
dec= +60  00  26
```
The reduction is continuing. The sum JPG-image available at http://observ.pereplet.ru/images/GRB060319may-be.jpg This work is supported by RFFI 04-02-16411 grant. This message can be cited. Mailto: lipunov@sai.msu.ru
GCN Circular #4893
P. D'Avanzo (INAF-OAB), G.L. Israel (INAF-OARm), on behalf of a larger collaboration report:
Further analysis of our optical data (D'Avanzo et al., GCN 4890) of GRB 060319 (Ziaeepour et al., GCN 4885), does not reveal any obvious object at the position reported by Lipunov et al. (GCN 4892) with a magnitude limit of R > 23 (3sigma confidence).
This message can be cited.
GCN Circular #4894
A. J. Blustin (UCL-MSSL), H. Ziaeepour (UCL-MSSL), F. E. Marshall (NASA/GSFC) on behalf of the Swift/UVOT team
The Swift/UVOT began taking data on the field of GRB060319 at 00:58:02 on 2006-03-19, 139 s after the BAT trigger (Ziaeepour et al., GCN 4885). In the initial 100 s White filter image no new source is detected at the XRT position (Kennea et al., GCN 4886) down to a 3-sigma magnitude upper limit of 20.6. No source is detected in summed images from any of the filters down to the following 3-sigma upper limits.
```
Filter  T_range(s) Exp(s) 3sigUL(mag)
V       500-2150   544    19.9
B       448-2102   128    20.2
U       423-2078   158    20.0
UVW1    400-2054   178    19.8
UVM2    245-2030   308    19.9
UVW2    476-2141   158    20.2
White   139-2116   276    20.7
```
These magnitudes are not corrected for Galactic extinction; E(B-V)=0.022.
GCN Circular #4895
A.P. Beardmore, K.L. Page (U Leicester), J.A. Kennea, D.N. Burrows (PSU) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift/XRT team:
We have analysed the first two orbits of Swift XRT data on the BAT GRB 060319 (Ziaeepour, et al., GCN 4885; Sakamato et al., GCN 4891). The XRT began observing in Photon Counting mode at 00:58:04UT on 2006-03-19, 173 s after the BAT trigger. With an exposure time of 4.5ks, the refined XRT position is
```
RA(J2000)  =  11h 45m 33.8s
Dec(J2000) = +60d 00' 39.0"
```
with an uncertainty of 3.6" (90% containment). This is 2' away from the centre of the refined BAT position quoted in GCN 4891 (Sakamoto et al.), and 1.7" away from the initial XRT position quoted in GCN 4886 (Kennea et al.).
The 0.3-10 keV X-ray light curve initially rises from 0.5 count/s at T+173s to a maximum of 2 count/s at T+265s, then shows a power-law decline with a decay index of 1.02+/-0.05.
The X-ray spectrum covering the time period from T+173s to T+7.3ks is well fit by an absorbed power-law with a photon index of 2.10+/-0.15 and column density of (4.6+/-0.6)e21 cm**-2. We note the Galactic column density in the direction of the source is 1.37e20 cm**-2. The observed (unabsorbed) 0.3-10 keV flux for this spectrum is 1.2e-11 (2.2e-11) erg/cm**2/s.
Assuming the X-ray emission continues to decline at the same rate, we predict a 0.3-10 keV XRT count rate of 0.005 count/s at T+24hr, which corresponds to an observed 0.3-10 keV flux of 2.7e-13 erg/cm**2/s.
GCN Circular #4896
S. Guziy (IAA-CSIC Granada), G. G=F3mez Velarde (IAC Tenerife) and A. J. Castro-Tirado (IAA-CSIC), on behalf of a larger collaboration, report:
We have taken BVRI frames at the position of GRB 060319 (Ziaeepour et al. GCNC 4885) with the IAC-80 telescope at Observatorio del Teide (Canary Islands). Images were obtained starting at 02:23 UT (i.e. 1.45 hr after the onset of the burst). We do not see any optical source within the revised SWIFT/XRT position (Beardmore et al. GCNC 4895) down to R =3D 21. In particular, we do not see any counterpart at this time to the MASTER source reported by Lipunov et al. (GCNC 4892) in agreement with D'Avanzo et al. (GCNC 4893).
This message can be quoted.
GCN Circular #4897
N.R. Tanvir (U. Hertfordshire), E. Rol (U. Leicester), K. Wiersema, R. Starling (U. Amsterdam) and N. O'Mahoney (ING) report on behalf of a larger collaboration:
We observed the field of GRB 060319 with WHT/LIRIS. A 10 min K-band exposure was made beginning at Mar 19 06.38 UT (ie. approximately 5.4 hours post-burst).
A faint source is visible within the XRT error circle reported by Beardmore et al. (GCN 4895). The coordinates of the source are (relative to DSS system) approximately:
11 45 33.5 +60 00 39.0 (J2000)
The magnitude relative to two nearby 2MASS stars is K=19.0+-0.3. It is not possible to tell whether the source is constant or variable.
D. Perley's Keck GRB Host project: suggests potential host galaxy at z=1.172 (OII)

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Jochen Greiner, last update: 28-Nov-2012 [Disclaimer]