Gamma-ray Burst 060919

(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 19 Sep 06 07:49:02 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     230115,   Seg_Num: 0
GRB_RA:          276.911d {+18h 27m 39s} (J2000),
                 277.043d {+18h 28m 10s} (current),
                 275.929d {+18h 23m 43s} (1950)
GRB_DEC:         -51.028d {-51d 01' 38"} (J2000),
                 -51.023d {-51d 01' 22"} (current),
                 -51.059d {-51d 03' 30"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4980 [cnts]    Image_Peak=222 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   147     E_range: 25-100 keV
BKG_INTEN:       29368 [cnts]
BKG_TIME:        28102.54 SOD {07:48:22.54} UT
BKG_DUR:         8 [sec]
GRB_DATE:        13997 TJD;   262 DOY;   06/09/19
GRB_TIME:        28118.67 SOD {07:48:38.67} UT
GRB_PHI:         112.62 [deg]
GRB_THETA:        32.88 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     25.15 [sigma]
IMAGE_SIGNIF:    9.13 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +2  +9  +0  +0 +13  +1 
SUN_POSTN:       176.55d {+11h 46m 12s}   +1.49d {+01d 29' 39"}
SUN_DIST:         97.75 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.32d {+09h 41m 17s}  +16.98d {+16d 59' 01"}
MOON_DIST:       128.86 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.85,-17.25 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      274.90,-27.71 [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 = 125.60,0.04 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Sep 06 07:50:16 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.887d {+18h 27m 33s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 03"} (J2000)
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28205.58 SOD {07:50:05.58} UT,   86.9 [sec] since BAT Trigger Time
COUNTS:          3    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 19 Sep 06 07:52:21 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     230115,   Seg_Num: 0
GRB_RA:          276.911d {+18h 27m 39s} (J2000),
                 277.043d {+18h 28m 10s} (current),
                 275.929d {+18h 23m 43s} (1950)
GRB_DEC:         -51.028d {-51d 01' 38"} (J2000),
                 -51.023d {-51d 01' 22"} (current),
                 -51.059d {-51d 03' 30"} (1950)
GRB_DATE:        13997 TJD;   262 DOY;   06/09/19
GRB_TIME:        28118.67 SOD {07:48:38.67} UT
TRIGGER_INDEX:   147
GRB_PHI:         112.62 [deg]
GRB_THETA:        32.88 [deg]
DELTA_TIME:      -11.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     25.15 [sigma]
IMAGE_SIGNIF:    9.13 [sigma]
LC_URL:          sw00230115000msb.lc
SUN_POSTN:       176.55d {+11h 46m 12s}   +1.49d {+01d 29' 36"}
SUN_DIST:         97.74 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.35d {+09h 41m 24s}  +16.97d {+16d 58' 21"}
MOON_DIST:       128.84 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.85,-17.25 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      274.90,-27.71 [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 = 125.60,0.04 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Sep 06 07:52:50 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.886d {+18h 27m 33s} (J2000)
POINT_DEC:       -51.017d {-51d 01' 02"} (J2000)
POINT_ROLL:      262.844d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28209.30 SOD {07:50:09.30} UT,   90.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.890
N_STARS:         190
X_OFFSET:        330 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1289 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    7
SL_URL:          sw00230115000msufc0090.fits
SUN_POSTN:       176.55d {+11h 46m 13s}   +1.49d {+01d 29' 35"}
SUN_DIST:         97.73 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.35d {+09h 41m 25s}  +16.97d {+16d 58' 15"}
MOON_DIST:       128.82 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.89,-27.69 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Sep 06 07:53:21 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.886d {+18h 27m 33s} (J2000)
POINT_DEC:       -51.017d {-51d 01' 02"} (J2000)
POINT_ROLL:      262.844d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28209.30 SOD {07:50:09.30} UT,   90.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.890
N_STARS:         190
X_OFFSET:        330 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1289 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    7
SL_URL:          sw00230115000msufc0090.fits
SUN_POSTN:       176.55d {+11h 46m 13s}   +1.49d {+01d 29' 35"}
SUN_DIST:         97.73 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.36d {+09h 41m 26s}  +16.97d {+16d 58' 09"}
MOON_DIST:       128.82 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.89,-27.69 [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 19 Sep 06 07:53:42 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.886d {+18h 27m 33s} (J2000)
POINT_DEC:       -51.017d {-51d 01' 02"} (J2000)
ROLL:            262.844d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28209.30 SOD {07:50:09.30} UT,   90.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     180345010
X_OFFSET:        649 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       809
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00230115000msuni0090.fits
SUN_POSTN:       176.55d {+11h 46m 13s}   +1.49d {+01d 29' 35"}
SUN_DIST:         97.73 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.36d {+09h 41m 26s}  +16.97d {+16d 58' 05"}
MOON_DIST:       128.82 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.89,-27.69 [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 19 Sep 06 07:53:27 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.886d {+18h 27m 33s} (J2000)
POINT_DEC:       -51.017d {-51d 01' 02"} (J2000)
ROLL:            262.844d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28209.30 SOD {07:50:09.30} UT,   90.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     180345010
X_OFFSET:        649 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       809
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00230115000msuni0090.fits
SUN_POSTN:       176.55d {+11h 46m 13s}   +1.49d {+01d 29' 35"}
SUN_DIST:         97.73 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.36d {+09h 41m 26s}  +16.97d {+16d 58' 08"}
MOON_DIST:       128.82 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.89,-27.69 [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 19 Sep 06 08:01:32 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 02"} (J2000)
POINT_ROLL:      262.846d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28314.53 SOD {07:51:54.53} UT,   195.9 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.372
N_STARS:         190
X_OFFSET:        330 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1289 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00230115000msufc0195.fits
SUN_POSTN:       176.56d {+11h 46m 14s}   +1.49d {+01d 29' 27"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.42d {+09h 41m 41s}  +16.94d {+16d 56' 31"}
MOON_DIST:       128.76 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.69 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Sep 06 08:01:59 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 02"} (J2000)
POINT_ROLL:      262.846d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28314.53 SOD {07:51:54.53} UT,   195.9 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.372
N_STARS:         190
X_OFFSET:        330 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1289 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00230115000msufc0195.fits
SUN_POSTN:       176.56d {+11h 46m 14s}   +1.49d {+01d 29' 27"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.43d {+09h 41m 42s}  +16.94d {+16d 56' 26"}
MOON_DIST:       128.75 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.69 [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 19 Sep 06 08:03:10 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 02"} (J2000)
ROLL:            262.846d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28314.53 SOD {07:51:54.53} UT,   195.9 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     180345115
X_OFFSET:        649 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       809
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00230115000msuni0195.fits
SUN_POSTN:       176.56d {+11h 46m 14s}   +1.49d {+01d 29' 25"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.43d {+09h 41m 44s}  +16.94d {+16d 56' 12"}
MOON_DIST:       128.75 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.69 [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 19 Sep 06 08:03:43 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 02"} (J2000)
ROLL:            262.846d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28314.53 SOD {07:51:54.53} UT,   195.9 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     180345115
X_OFFSET:        649 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       809
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00230115000msuni0195.fits
SUN_POSTN:       176.56d {+11h 46m 14s}   +1.49d {+01d 29' 25"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.44d {+09h 41m 45s}  +16.93d {+16d 56' 05"}
MOON_DIST:       128.74 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.69 [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 19 Sep 06 08:10:15 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 02"} (J2000)
POINT_ROLL:      262.847d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28992.27 SOD {08:03:12.27} UT,   873.6 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.225
N_STARS:         190
X_OFFSET:        330 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1289 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00230115000msufc0873.fits
SUN_POSTN:       176.56d {+11h 46m 15s}   +1.49d {+01d 29' 19"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.49d {+09h 41m 58s}  +16.91d {+16d 54' 47"}
MOON_DIST:       128.69 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.69 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Sep 06 08:10:41 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 02"} (J2000)
POINT_ROLL:      262.847d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28992.27 SOD {08:03:12.27} UT,   873.6 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.225
N_STARS:         190
X_OFFSET:        330 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1289 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00230115000msufc0873.fits
SUN_POSTN:       176.56d {+11h 46m 15s}   +1.49d {+01d 29' 18"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.49d {+09h 41m 59s}  +16.91d {+16d 54' 42"}
MOON_DIST:       128.69 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.69 [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 19 Sep 06 08:11:49 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 02"} (J2000)
ROLL:            262.847d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28992.27 SOD {08:03:12.27} UT,   873.6 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     180345793
X_OFFSET:        649 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       809
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00230115000msuni0873.fits
SUN_POSTN:       176.56d {+11h 46m 15s}   +1.49d {+01d 29' 17"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.50d {+09h 42m 01s}  +16.91d {+16d 54' 28"}
MOON_DIST:       128.68 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.69 [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 19 Sep 06 08:12:07 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 02"} (J2000)
ROLL:            262.847d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  28992.27 SOD {08:03:12.27} UT,   873.6 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     180345793
X_OFFSET:        649 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       809
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00230115000msuni0873.fits
SUN_POSTN:       176.56d {+11h 46m 15s}   +1.49d {+01d 29' 17"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.51d {+09h 42m 01s}  +16.91d {+16d 54' 24"}
MOON_DIST:       128.68 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.69 [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 19 Sep 06 08:12:25 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 03"} (J2000)
POINT_ROLL:      262.846d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  29399.91 SOD {08:09:59.91} UT,   1281.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.231
N_STARS:         190
X_OFFSET:        330 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1289 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00230115000msufc1281.fits
SUN_POSTN:       176.56d {+11h 46m 15s}   +1.49d {+01d 29' 16"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.51d {+09h 42m 02s}  +16.91d {+16d 54' 21"}
MOON_DIST:       128.68 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.70 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Sep 06 08:12:53 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 03"} (J2000)
POINT_ROLL:      262.846d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  29399.91 SOD {08:09:59.91} UT,   1281.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.231
N_STARS:         190
X_OFFSET:        330 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1289 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00230115000msufc1281.fits
SUN_POSTN:       176.56d {+11h 46m 16s}   +1.49d {+01d 29' 16"}
SUN_DIST:         97.72 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.51d {+09h 42m 03s}  +16.90d {+16d 54' 15"}
MOON_DIST:       128.68 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.70 [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 19 Sep 06 08:13:46 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 03"} (J2000)
ROLL:            262.846d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  29399.91 SOD {08:09:59.91} UT,   1281.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     180346201
X_OFFSET:        649 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       809
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00230115000msuni1281.fits
SUN_POSTN:       176.57d {+11h 46m 16s}   +1.49d {+01d 29' 15"}
SUN_DIST:         97.71 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.52d {+09h 42m 05s}  +16.90d {+16d 54' 05"}
MOON_DIST:       128.67 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.70 [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 19 Sep 06 08:13:57 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     230115,   Seg_Num: 0
POINT_RA:        276.883d {+18h 27m 32s} (J2000)
POINT_DEC:       -51.018d {-51d 01' 03"} (J2000)
ROLL:            262.846d
IMG_START_DATE:  13997 TJD;   262 DOY;   06/09/19
IMG_START_TIME:  29399.91 SOD {08:09:59.91} UT,   1281.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     180346201
X_OFFSET:        649 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       809
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00230115000msuni1281.fits
SUN_POSTN:       176.57d {+11h 46m 16s}   +1.49d {+01d 29' 15"}
SUN_DIST:         97.71 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      145.52d {+09h 42m 05s}  +16.90d {+16d 54' 02"}
MOON_DIST:       128.67 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      343.86,-17.23 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      274.88,-27.70 [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 #5575
C. Guidorzi (Univ Bicocca&INAF-OAB), S. D. Barthelmy (GSFC), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), C. Gronwall (PSU), J. A. Kennea (PSU), H. A. Krimm (GSFC/USRA), V. Mangano (INAF-IASFPA), A. Moretti (INAF-OAB), K. L. Page (U Leicester), D. M. Palmer (LANL), P. Romano (INAF-OAB) and S. D. Vergani (DIAS-DCU) report on behalf of the Swift Team:
At 07:48:38 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 060919 (trigger=230115). Swift slewed immediately to the burst. The BAT on-board calculated location is RA,Dec 276.911, -51.028 {18h 27m 39s, -51d 01' 38"} (J2000) with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multi-peaked structure with an initial main peak of duration ~ 2 sec and lower level emission out to T+20 sec. This is followed by a second peak at T+ ~300 sec of duration ~30 sec seen only in the 15-50 keV band. The peak count rate was ~2500 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began taking data at 07:50:05 UT, 87 seconds after the BAT trigger. The XRT on-board centroid algorithm did not find a source in the image. Ground analysis reveals a possible faint source at the following coordinates:
```
RA(J2000): 18h 27m 42.35s
Dec(J2000): -51 00 51.2   
```
with an error of 5.1 arcseconds (90% confidence). Further analysis of ground data is necessary to determine the properties of the possible source. The current flux is 8.3x10^-9 erg cm-2 s-1.
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 91 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The overlap of the 8'x8' region for the list of sources generated on-board and the BAT error circle is 100%. No correction has been made for the expected extinction corresponding to E(B-V) of 0.07.
GCN Circular #5576
Klotz, A. (CESR-OMP), Boer M. (OHP), Atteia J.L. (LATT-OMP) report:
We imaged the field of GRB 060919 detected by SWIFT (trigger 230115) with the new TAROT robotic telescope (D=25cm) located at the La Silla observatory, Chile.
First image was acquired 28.3s after the GRB trigger (5.2s after the notice). The field elevation decreased from only 2 degrees above horizon and weather conditions were good. Images were taken during the prompt emission.
Date of trigger : t0 = 2006-09-19T07:48:38.880
First image is 60.0s exposure trailed. No OT is visible: t0+28.3s to t0+88.3s : R > 15.4
Second image is 30.0s exposure. No OT is visible: t0+94.2s to t0+124.2s : R > 15.8
We co-added a series of the 3 firsts not trailed exposures. No OT is visible: t0+94.2s to t0+196.4s : R > 15.9
Fourth non trailed image is a 90.0s exposure and covers the second gamma peak described by Guidorzi et al. GCNC 5575. No OT is visible: t0+292.3s to t0+382.3s : R > 15.8
Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction.
N.B. Galactic coordinates are lon=343.8526 lat=-17.2471 and the galactic extinction in R band is 0.5 magnitudes estimated from D. Schlegel et al. 1998ApJ...500..525S.
This message may be cited.
GCN Circular #5577
C. Guidorzi, P. Romano, A. Moretti, S. Vergani on behalf of the Swift XRT team report:
we have analysed the first orbit of XRT data from GRB 060919 (Guidorzi et al., GCN Circ 5575). A 1.3 ks Photon Counting mode image provides a refined XRT position:
```
RA(J2000)  =  18h 27m 42.21s,
Dec(J2000) = -51d 00m 50.4s
```
with an uncertainty of 4.1 arcsec (90% containment). This position is 1.6 arcsec away from the previous XRT position and 56 arcsec from the onboard BAT position (Guidorzi et al., GCN Circ 5575).
The X-ray light curve can be fit with a single power law with index 0.85 +- 0.2 (90%) from 100 to 1400 seconds after the BAT trigger.
A power-law fit to the 0.3-10 keV spectrum yields a photon index of 1.7+-0.5 and a column density of (9+-4)x1e21 cm-2 (90%), significantly in excess of the Galactic hydrogen column density in the direction of the burst (6.4e20cm-2).
The average unabsorbed flux of the first orbit is (1.1+-0.3)e-11 erg cm-2 s-1. If the burst decays at the current rate we estimate a 0.3-10 keV unabsorbed flux of ~1.2e-13 ergs cm-2 s-1 at T+24hr.
This circular is an official product of the Swift XRT Team.
GCN Circular #5578
G. Sato (GSFC/ISAS), L. Barbier (GSFC), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), C. Guidorzi (Univ Bicocca&INAF-OAB), D. Hullinger (BYU-Idaho), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC) on behalf of the Swift-BAT team:
Using the data set from T-239 to T+950 sec from recent telemetry downlinks, we report further analysis of BAT GRB 060919 (trigger #230115) (Guidorzi, et al., GCN Circ. 5575). The BAT ground-calculated position is RA,Dec = 276.900, -50.994 deg {18h 27m 36.0s, -50d 59' 39.8"} (J2000) +- 1.6 arcmin, (radius, sys+stat, 90% containment). The partial coding was 29%.
There is an initial FRED peak starting at T-1 sec, peaking at T+0, and lasting out to T+5 sec. There is smaller, 4-sec wide FRED-like peak starting at T+6 sec. There is an even smaller, 4-sec wide peak centered at T+24 sec. We note that our initial circular using the raw TDRSS rate lightcurves described a second episode of emission at T+300 sec. Now using the masked-tagged light curves, this second episode was due to a noisy detector in the instrument. T90 (15-350 keV) is 9.1 +- 0.2 sec (estimated error including systematics).
The time-averaged spectrum from T-1.0 to T+9.0 is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.85 +- 0.19. The fluence in the 15-150 keV band is 5.5 +- 0.6 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-0.49 sec in the 15-150 keV band is 2.2 +- 0.3 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
GCN Circular #5579
A. Melandri, A. Gomboc, R.J. Smith, N. Tanvir on behalf of the Robonet collaboration report:
We imaged the field of GRB 060919 (Guidorzi et al., GCN 5575) with the Faulkes South Telescope starting at 10:36:10.50 UT (about 2.8 hours aftert the burst event).
We acquired a first sequence of images in the R-band (6 exposures each lasting 150 seconds) and a second sequence in R and SDSS-I filters (12 exposures lasting 150 seconds in each filter).
We did not detect any obvious optical counterpart inside the XRT refined error circle (Guidorzi et al., GCN 5577) down to a limiting magnitude of R > 19.5 (about 2.92 hours after the event).
Further analysis and observation are still ongoing.
GCN Circular #5580
A. Breeveld (MSSL/UCL) and C. Guidorzi (Univ Bicoca&INAF-OAB) report on behalf of the Swift/UVOT team:
The Swift/UVOT began taking data on 2006-09-19 73s after the burst (Guidorzi et al. GCN 5575). At the position of the XRT error circle (Guidorzi et al. GCN 5577) there are no new sources. In the summed UVOT images we obtain the following 3 sigma upper limits:
```
Filter          T_range(s)      Exp(s)          3sig_UL(mag)
V               73-11544        2310            20.24
B               674-24585       1330            21.02
U               650-24547       2202            20.88
UVW1            626-23633       1869            20.99
UVM2            602-12448       1134            21.10
UVW2            703-7232        424             20.65
White           91-18800        982.1           21.00
(160-650 nm)
```
These magnitudes are not corrected for the expected extinction of E(B-V)=0.072

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Jochen Greiner, last update: 20-Sep-2006 [Disclaimer]