Gamma-ray Burst 100316C

(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 16 Mar 10 08:58:43 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     416115,   Seg_Num: 0
GRB_RA:           32.291d {+02h 09m 10s} (J2000),
                  32.347d {+02h 09m 23s} (current),
                  32.020d {+02h 08m 05s} (1950)
GRB_DEC:         -68.009d {-68d 00' 31"} (J2000),
                 -67.961d {-67d 57' 38"} (current),
                 -68.245d {-68d 14' 40"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       18579 [cnts]    Image_Peak=372 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   289     E_range: 15-50 keV
BKG_INTEN:       164854 [cnts]
BKG_TIME:        32226.38 SOD {08:57:06.38} UT
BKG_DUR:         40 [sec]
GRB_DATE:        15271 TJD;    75 DOY;   10/03/16
GRB_TIME:        32279.50 SOD {08:57:59.50} UT
GRB_PHI:          -4.31 [deg]
GRB_THETA:         6.80 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     11.09 [sigma]
IMAGE_SIGNIF:    7.19 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +1  -3  +0  +0 -32  +0 
SUN_POSTN:       356.02d {+23h 44m 05s}   -1.72d {-01d 43' 23"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.27d {+23h 57m 05s}   +4.89d {+04d 53' 38"}
MOON_DIST:        76.45 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      329.66,-68.48 [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 = 46.82,-14.82 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 08:59:35 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.293d {+02h 09m 10s} (J2000)
POINT_DEC:       -68.010d {-68d 00' 34"} (J2000)
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32357.85 SOD {08:59:17.85} UT,   78.3 [sec] since BAT Trigger Time
COUNTS:          5    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        1    Max_iter_allowed= 4
ERROR_CODE:      1
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        No source found in the image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:01:46 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     416115,   Seg_Num: 0
GRB_RA:           32.291d {+02h 09m 10s} (J2000),
                  32.347d {+02h 09m 23s} (current),
                  32.020d {+02h 08m 05s} (1950)
GRB_DEC:         -68.009d {-68d 00' 31"} (J2000),
                 -67.961d {-67d 57' 38"} (current),
                 -68.245d {-68d 14' 40"} (1950)
GRB_DATE:        15271 TJD;    75 DOY;   10/03/16
GRB_TIME:        32279.50 SOD {08:57:59.50} UT
TRIGGER_INDEX:   289
GRB_PHI:          -4.31 [deg]
GRB_THETA:         6.80 [deg]
DELTA_TIME:      -31.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     11.09 [sigma]
IMAGE_SIGNIF:    7.19 [sigma]
LC_URL:          sw00416115000msb.lc
SUN_POSTN:       356.02d {+23h 44m 05s}   -1.72d {-01d 43' 20"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.29d {+23h 57m 11s}   +4.90d {+04d 54' 17"}
MOON_DIST:        76.46 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      329.66,-68.48 [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 = 46.82,-14.82 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:02:28 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.293d {+02h 09m 10s} (J2000)
POINT_DEC:       -68.009d {-68d 00' 32"} (J2000)
POINT_ROLL:      321.226d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32360.64 SOD {08:59:20.64} UT,   81.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.920
N_STARS:         26
X_OFFSET:        494 [pixels]
Y_OFFSET:        568 [pixels]
X_MAX:           1453 [pixels]
Y_MAX:           1527 [pixels]
DET_THRESH:      16
PHOTO_THRESH:    9
SL_URL:          sw00416115000msufc0081.fits
SUN_POSTN:       356.02d {+23h 44m 05s}   -1.72d {-01d 43' 19"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.30d {+23h 57m 12s}   +4.91d {+04d 54' 27"}
MOON_DIST:        76.46 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.66,-68.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:02:56 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.293d {+02h 09m 10s} (J2000)
POINT_DEC:       -68.009d {-68d 00' 32"} (J2000)
POINT_ROLL:      321.226d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32360.64 SOD {08:59:20.64} UT,   81.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.920
N_STARS:         26
X_OFFSET:        494 [pixels]
Y_OFFSET:        568 [pixels]
X_MAX:           1453 [pixels]
Y_MAX:           1527 [pixels]
DET_THRESH:      16
PHOTO_THRESH:    9
SL_URL:          sw00416115000msufc0081.fits
SUN_POSTN:       356.02d {+23h 44m 05s}   -1.72d {-01d 43' 18"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.30d {+23h 57m 13s}   +4.91d {+04d 54' 33"}
MOON_DIST:        76.46 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.66,-68.48 [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 16 Mar 10 09:02:28 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.293d {+02h 09m 10s} (J2000)
POINT_DEC:       -68.009d {-68d 00' 32"} (J2000)
POINT_ROLL:      321.226d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32360.64 SOD {08:59:20.64} UT,   81.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.920
N_STARS:         26
X_OFFSET:        494 [pixels]
Y_OFFSET:        568 [pixels]
X_MAX:           1453 [pixels]
Y_MAX:           1527 [pixels]
DET_THRESH:      16
PHOTO_THRESH:    9
SL_URL:          sw00416115000msufc0081.fits
SUN_POSTN:       356.02d {+23h 44m 05s}   -1.72d {-01d 43' 19"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.30d {+23h 57m 12s}   +4.91d {+04d 54' 27"}
MOON_DIST:        76.46 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.66,-68.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:03:01 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     416115,   Seg_Num: 0
GRB_RA:           32.2872d {+02h 09m 08.92s} (J2000),
                  32.3429d {+02h 09m 22.29s} (current),
                  32.0154d {+02h 08m 03.69s} (1950)
GRB_DEC:         -67.9910d {-67d 59' 27.5"} (J2000),
                 -67.9430d {-67d 56' 34.7"} (current),
                 -68.2267d {-68d 13' 36.1"} (1950)
GRB_ERROR:       4.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32373.00 SOD {08:59:33.00} UT,   93.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       356.02d {+23h 44m 05s}   -1.72d {-01d 43' 18"}
SUN_DIST:         70.71 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.30d {+23h 57m 13s}   +4.91d {+04d 54' 34"}
MOON_DIST:        76.45 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.30,-47.50 [deg] galactic lon,lat of the burst
ECL_COORDS:      329.70,-68.47 [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/docs.php for details.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:04:13 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.293d {+02h 09m 10s} (J2000)
POINT_DEC:       -68.009d {-68d 00' 32"} (J2000)
ROLL:            321.226d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32360.64 SOD {08:59:20.64} UT,   81.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     290422766
X_OFFSET:        813 [pixels]
Y_OFFSET:        887 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       973
Y_GRB_POS:       1047
BINNING_INDEX:   1
IM_URL:          sw00416115000msuni0087.fits
SUN_POSTN:       356.02d {+23h 44m 06s}   -1.72d {-01d 43' 17"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.31d {+23h 57m 15s}   +4.91d {+04d 54' 49"}
MOON_DIST:        76.47 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.66,-68.48 [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 16 Mar 10 09:04:33 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.293d {+02h 09m 10s} (J2000)
POINT_DEC:       -68.009d {-68d 00' 32"} (J2000)
ROLL:            321.226d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32360.64 SOD {08:59:20.64} UT,   81.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     290422766
X_OFFSET:        813 [pixels]
Y_OFFSET:        887 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       973
Y_GRB_POS:       1047
BINNING_INDEX:   1
IM_URL:          sw00416115000msuni0087.fits
SUN_POSTN:       356.02d {+23h 44m 06s}   -1.72d {-01d 43' 17"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.32d {+23h 57m 16s}   +4.91d {+04d 54' 54"}
MOON_DIST:        76.47 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.66,-68.48 [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:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:09:43 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.012d {-68d 00' 41"} (J2000)
POINT_ROLL:      321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32518.86 SOD {09:01:58.86} UT,   239.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.987
N_STARS:         67
X_OFFSET:        254 [pixels]
Y_OFFSET:        328 [pixels]
X_MAX:           1693 [pixels]
Y_MAX:           1767 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00416115000msufc0239.fits
SUN_POSTN:       356.03d {+23h 44m 06s}   -1.72d {-01d 43' 12"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.36d {+23h 57m 25s}   +4.93d {+04d 56' 01"}
MOON_DIST:        76.48 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:09:43 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.012d {-68d 00' 41"} (J2000)
POINT_ROLL:      321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32518.86 SOD {09:01:58.86} UT,   239.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.987
N_STARS:         67
X_OFFSET:        254 [pixels]
Y_OFFSET:        328 [pixels]
X_MAX:           1693 [pixels]
Y_MAX:           1767 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00416115000msufc0239.fits
SUN_POSTN:       356.03d {+23h 44m 06s}   -1.72d {-01d 43' 12"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.36d {+23h 57m 25s}   +4.93d {+04d 56' 01"}
MOON_DIST:        76.48 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:10:20 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.012d {-68d 00' 41"} (J2000)
POINT_ROLL:      321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32518.86 SOD {09:01:58.86} UT,   239.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.987
N_STARS:         67
X_OFFSET:        254 [pixels]
Y_OFFSET:        328 [pixels]
X_MAX:           1693 [pixels]
Y_MAX:           1767 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00416115000msufc0239.fits
SUN_POSTN:       356.03d {+23h 44m 07s}   -1.72d {-01d 43' 11"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.36d {+23h 57m 27s}   +4.94d {+04d 56' 09"}
MOON_DIST:        76.48 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [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 16 Mar 10 09:10:54 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     416115,   Seg_Num: 0
GRB_RA:           32.2869d {+02h 09m 08.85s} (J2000),
                  32.3426d {+02h 09m 22.22s} (current),
                  32.0151d {+02h 08m 03.62s} (1950)
GRB_DEC:         -67.9913d {-67d 59' 28.6"} (J2000),
                 -67.9433d {-67d 56' 35.8"} (current),
                 -68.2270d {-68d 13' 37.2"} (1950)
GRB_ERROR:       2.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32373.00 SOD {08:59:33.00} UT,   93.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       356.03d {+23h 44m 07s}   -1.72d {-01d 43' 11"}
SUN_DIST:         70.71 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.36d {+23h 57m 28s}   +4.94d {+04d 56' 16"}
MOON_DIST:        76.46 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.30,-47.50 [deg] galactic lon,lat of the burst
ECL_COORDS:      329.70,-68.47 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
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/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:11:05 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.012d {-68d 00' 41"} (J2000)
ROLL:            321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32518.86 SOD {09:01:58.86} UT,   239.4 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     290422924
X_OFFSET:        813 [pixels]
Y_OFFSET:        887 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       973
Y_GRB_POS:       1047
BINNING_INDEX:   1
IM_URL:          sw00416115000msuni0245.fits
SUN_POSTN:       356.03d {+23h 44m 07s}   -1.72d {-01d 43' 10"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.37d {+23h 57m 28s}   +4.94d {+04d 56' 18"}
MOON_DIST:        76.48 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [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 16 Mar 10 09:11:30 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.012d {-68d 00' 41"} (J2000)
ROLL:            321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  32518.86 SOD {09:01:58.86} UT,   239.4 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     290422924
X_OFFSET:        813 [pixels]
Y_OFFSET:        887 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       973
Y_GRB_POS:       1047
BINNING_INDEX:   1
IM_URL:          sw00416115000msuni0245.fits
SUN_POSTN:       356.03d {+23h 44m 07s}   -1.72d {-01d 43' 10"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.37d {+23h 57m 29s}   +4.94d {+04d 56' 24"}
MOON_DIST:        76.48 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [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:        All 4 attachments are included.

GCN Circular #10491
M. Stamatikos (OSU/NASA/GSFC), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), S. Campana (INAF-OAB), P. A. Evans (U Leicester), J. M. Gelbord (PSU), C. Guidorzi (U Ferrara), S. T. Holland (CRESST/USRA/GSFC), O. M. Littlejohns (U Leicester), R. Margutti (Univ Bicocca&OAB), C. B. Markwardt (CRESST/GSFC/UMD), P. T. O'Brien (U Leicester), C. Pagani (U Leicester), K. L. Page (U Leicester), D. M. Palmer (LANL), P. Romano (INAF-IASFPA), M. H. Siegel (PSU), R. L. C. Starling (U Leicester) and L. Vetere (PSU) report on behalf of the Swift Team:
At 08:57:59 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 100316C trigger=416115). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 32.291, -68.009 which is
```
   RA(J2000) = 02h 09m 10s
   Dec(J2000) = -68d 00' 31"
```
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 7 sec. The peak count rate was ~1500 counts/sec (15-350 keV), at ~1 sec after the trigger.
The XRT began observing the field at 08:59:17.9 UT, 78.3 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source with an enhanced position: RA, Dec 32.2869, -67.9914 which is equivalent to:
```
   RA(J2000)  = 02h 09m 8.85s
   Dec(J2000) = -67d 59' 29.1"
```
with an uncertainty of 2.4 arcseconds (radius, 90% containment). This location is 63 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (3.94e+20 cm-2, Kalberla et al. 2005), with an excess column of 2.6 (+2.05/-1.79) x 1021 cm-2 (90% confidence).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 81 seconds after the BAT trigger. No credible 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 typical 3-sigma upper limit has been about 19.6 mag. The overlap of the 8'x8' region for the list of sources generated on-board and the BAT error circle is uncertain. No correction has been made for the expected extinction corresponding to E(B-V) of 0.04.
Burst Advocate for this burst is M. Stamatikos (Michael.Stamatikos-1 AT 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 16 Mar 10 09:15:57 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.011d {-68d 00' 40"} (J2000)
POINT_ROLL:      321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  33146.19 SOD {09:12:26.19} UT,   866.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.457
N_STARS:         143
X_OFFSET:        254 [pixels]
Y_OFFSET:        328 [pixels]
X_MAX:           1693 [pixels]
Y_MAX:           1767 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00416115000msufc0866.fits
SUN_POSTN:       356.03d {+23h 44m 07s}   -1.72d {-01d 43' 06"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.40d {+23h 57m 37s}   +4.96d {+04d 57' 22"}
MOON_DIST:        76.49 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:16:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.011d {-68d 00' 40"} (J2000)
POINT_ROLL:      321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  33146.19 SOD {09:12:26.19} UT,   866.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.457
N_STARS:         143
X_OFFSET:        254 [pixels]
Y_OFFSET:        328 [pixels]
X_MAX:           1693 [pixels]
Y_MAX:           1767 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00416115000msufc0866.fits
SUN_POSTN:       356.03d {+23h 44m 08s}   -1.72d {-01d 43' 05"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.41d {+23h 57m 38s}   +4.96d {+04d 57' 28"}
MOON_DIST:        76.49 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [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 16 Mar 10 09:15:57 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.011d {-68d 00' 40"} (J2000)
POINT_ROLL:      321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  33146.19 SOD {09:12:26.19} UT,   866.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.457
N_STARS:         143
X_OFFSET:        254 [pixels]
Y_OFFSET:        328 [pixels]
X_MAX:           1693 [pixels]
Y_MAX:           1767 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00416115000msufc0866.fits
SUN_POSTN:       356.03d {+23h 44m 07s}   -1.72d {-01d 43' 06"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.40d {+23h 57m 37s}   +4.96d {+04d 57' 22"}
MOON_DIST:        76.49 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 16 Mar 10 09:17:23 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.011d {-68d 00' 40"} (J2000)
ROLL:            321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  33146.19 SOD {09:12:26.19} UT,   866.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     290423551
X_OFFSET:        813 [pixels]
Y_OFFSET:        887 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       973
Y_GRB_POS:       1047
BINNING_INDEX:   1
IM_URL:          sw00416115000msuni0872.fits
SUN_POSTN:       356.03d {+23h 44m 08s}   -1.72d {-01d 43' 04"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.41d {+23h 57m 40s}   +4.96d {+04d 57' 40"}
MOON_DIST:        76.49 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [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 16 Mar 10 09:17:44 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     416115,   Seg_Num: 0
POINT_RA:         32.287d {+02h 09m 09s} (J2000)
POINT_DEC:       -68.011d {-68d 00' 40"} (J2000)
ROLL:            321.231d
IMG_START_DATE:  15271 TJD;    75 DOY;   10/03/16
IMG_START_TIME:  33146.19 SOD {09:12:26.19} UT,   866.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     290423551
X_OFFSET:        813 [pixels]
Y_OFFSET:        887 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       973
Y_GRB_POS:       1047
BINNING_INDEX:   1
IM_URL:          sw00416115000msuni0872.fits
SUN_POSTN:       356.03d {+23h 44m 08s}   -1.72d {-01d 43' 04"}
SUN_DIST:         70.73 [deg]   Sun_angle= -2.4 [hr] (East of Sun)
MOON_POSTN:      359.42d {+23h 57m 40s}   +4.96d {+04d 57' 45"}
MOON_DIST:        76.49 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:      292.31,-47.48 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      329.65,-68.48 [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:        All 4 attachments are included.

GCN Circular #10497
M. Jelinek (IAA-CSIC), A. de Ugarte Postigo (INAF-OAB), A.J. Castro-Tirado (IAA-CSIC), J. Gorosabel (IAA-CSIC), P. Kubanek (IPL UV, IAA-CSIC), R. Cunniffe (IAA-CSIC), S. Guziy (IAA-CSIC), P. Yock (Auckland Univ.), W.H. Allen (Vintage Lane Obs.), I. Bond (Massey Univ.), G. Christie (Stardome Obs.), on behalf of a larger collaboration report:
"We have observed the field of GRB 100316C (Stamatikos et al., GCN 10491) using the 0.6m Yock-Allen robotic telescope (BOOTES-3) located in Blenheim, New Zealand. Observations began at 8:58:47 UT (49s from GRB onset and 4 s from the GCN alert receipt). We do not detect any source within the XRT error circle in a 20 x 2 second combined unfiltered image down to a 3 sigma limiting magnitude of 18.5."
GCN Circular #10506
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 1879 s of XRT Photon Counting mode data and 2 UVOT images for GRB 100316C, 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 = 32.28660, -67.99098 which is equivalent to:
```
RA (J2000): 02h 09m 8.78s
Dec (J2000): -67d 59' 27.5"
```
with an uncertainty of 1.8 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) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #10507
K.L. Page (U. Leicester) and M. Stamatikos (OSU/NASA/GSFC) report on behalf of the Swift-XRT team:
We have analysed 5.7 ks of XRT data for GRB 100316C (Stamatikos et al. GCN Circ. 10491), from 87 s to 13.5 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN Circ. 10506).
The light curve can be modelled with a doubly-broken power-law, with alpha1 = 0.28 (+0.66,-1.18) until T = 258 (+87/-66) s after the trigger, at which point the decay steepens to alpha2 = 2.53 (+1.18, -0.44). At T = 883 (+1857, -271) s, the decay flattens to alpha3 = 0.76 (+0.27, -0.26).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.6 (+0.5, -0.4). The best-fitting absorption column is 1.8 (+1.6, -1.3) x 10^21 cm^-2, in excess of the Galactic value of 3.9 x 10^20 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 5.1 x 10^-11 (6.2 x 10^-11) erg cm^-2 count^-1.
If the light curve continues to decay with a power-law decay index of 0.76, the count rate at T+24 hours will be 0.0013 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 6.6 x 10^-14 (8.1 x 10^-14) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00416115.
This circular is an official product of the Swift-XRT team.
GCN Circular #10509
D. M. Palmer (LANL), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC/UMD), T. Sakamoto (GSFC/UMBC), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-60 to T+243 sec from recent telemetry downlinks, we report further analysis of BAT GRB 100316C (trigger #416115) (Stamatikos, et al., GCN Circ. 10491). The BAT ground-calculated position is RA, Dec = 32.309, -67.992 deg which is
```
   RA(J2000)  =  02h 09m 14.2s 
   Dec(J2000) = -67d 59' 30.3" 
```
with an uncertainty of 2.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted light curve shows a roughly symmetric peak starting at ~T-3 sec, peaking at ~T+3 sec, and ending at ~T+12 sec. T90 (15-350 keV) is 9.3 +- 1.7 sec (estimated error including systematics).
The time-averaged spectrum from T-3.0 to T+7.0 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.58 +- 0.26. The fluence in the 15-150 keV band is 1.8 +- 0.3 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+2.12 sec in the 15-150 keV band is 0.4 +- 0.1 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/416115/BA/
GCN Circular #10510
S. R. Oates (MSSL-UCL) and M. Stamatikos (OSU/NASA/GSFC) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 100316C 81s after the BAT trigger (Stamatikos et al., GCN Circ. 10491). We do not detect any source at the enhanced Swift XRT position (Evans et al. GCN Circ. 10506).
The 3-sigma upper limits for the finding chart exposures (FC) and summed images are:
```
Filter   T_start   T_stop   Exp(s)  Mag (3-sigma upper limit)
-------------------------------------------------------------
white (FC)  81    231        147       > 20.52
white       521   7450       677       > 21.63
u     (FC)  239   489        246       > 19.87
u           644   7039       529       > 20.22
v           570   12991      1326      > 20.45
b           495   7245       549       > 20.72
uvw1        620   6834       333       > 20.24
uvm2        595   13530      741       > 20.60
uvw2        546   7656       471       > 20.57
-------------------------------------------------------------
```
The quoted upper limits have not been corrected for the expected Galactic extinction along the line of sight of E_(B-V) = 0.04 mag. All photometry is on the UVOT photometric system described in Poole et al. (2008, MNRAS, 383, 627).
GCN Circular #10516
Paulo Afonso (MPE Garching), Adria Updike (Clemson University), Marco Nardini, Robert Filgas, Abdullah Yoldas, and Jochen Greiner (MPE Garching) report on behalf of the GROND team:
We observed the field of GRB 100316C (Swift trigger 416115; Stamatikos et al. GCN 10491) simultaneously in g'r'i'z' JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2 m ESO/MPI telescope at La Silla Observatory (Chile).
Observations started at 00:45 UT on March 17, 2010, 15.8 hours after the GRB trigger, and are continuing. They were performed at an average seeing of 1" and at an average airmass of 2.
We found a DSS uncataloged source at the edge of the 1.8 Swift-XRT error circle reported by Evans et al. (GCN 10506) at
```
RA (J2000.0) = 02 h 09 m 09.11 s
DEC (J2000.0) = -67d 59' 26.8"
```
with an uncertainty of 0.5" in each coordinate.
Based on the first 31 min of total exposures in g'r'i'z', we estimate preliminary magnitudes (all in AB system) of
g' = 23.7 +/- 0.1 mag,
r' = 24.4 +/- 0.1 mag,
i' > 23.6 mag,
z' > 23.9 mag.
Further observations are necessary to confirm variability. If this is indeed the afterglow of GRB 100316C, the colors indicate a redshift less than 3.5. Given magnitudes are calibrated against GROND zeropoints and are not corrected for the expected Galactic foreground extinction corresponding to a reddening of E_(B-V)=0.03 mag in the direction of the burst (Schlegel et al. 1998). JHK reduction is ongoing.
GCN Report 277.1
GCN_Report 277.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_277_1.pdf by M. Stamatikos at OSU-CCAPP/GSFC titled: "Final Swift Observations of GRB 100316C"

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Jochen Greiner, last update: 16-Mar-2010 [Disclaimer]