Gamma-ray Burst 110719A

(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 Jul 11 06:09:57 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     457553,   Seg_Num: 0
GRB_RA:           24.564d {+01h 38m 15s} (J2000),
                  24.730d {+01h 38m 55s} (current),
                  23.845d {+01h 35m 23s} (1950)
GRB_DEC:         +34.572d {+34d 34' 20"} (J2000),
                 +34.631d {+34d 37' 50"} (current),
                 +34.318d {+34d 19' 05"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       10735 [cnts]    Image_Peak=240 [image_cnts]
TRIGGER_DUR:     3.072 [sec] 
TRIGGER_INDEX:   474     E_range: 25-100 keV
BKG_INTEN:       96401 [cnts]
BKG_TIME:        22104.82 SOD {06:08:24.82} UT
BKG_DUR:         32 [sec]
GRB_DATE:        15761 TJD;   200 DOY;   11/07/19
GRB_TIME:        22151.86 SOD {06:09:11.86} UT
GRB_PHI:         166.92 [deg]
GRB_THETA:        43.55 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.29 [sigma]
IMAGE_SIGNIF:    7.49 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +2  -2  +0  +0 -15  +0 
SUN_POSTN:       118.26d {+07h 53m 03s}  +20.90d {+20d 53' 54"}
SUN_DIST:         81.06 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.18d {+22h 48m 44s}   -2.04d {-02d 02' 06"}
MOON_DIST:        54.15 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.77,-27.31 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       35.78, 22.61 [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 = 55.78,20.35 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Jul 11 06:11:34 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     457553,   Seg_Num: 0
GRB_RA:           24.5799d {+01h 38m 19.17s} (J2000),
                  24.7463d {+01h 38m 59.12s} (current),
                  23.8610d {+01h 35m 26.64s} (1950)
GRB_DEC:         +34.5869d {+34d 35' 12.8"} (J2000),
                 +34.6453d {+34d 38' 43.1"} (current),
                 +34.3330d {+34d 19' 58.8"} (1950)
GRB_ERROR:       5.6 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       9.92e-10 [erg/cm2/sec]
GRB_SIGNIF:      5.91 [sigma]
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22263.12 SOD {06:11:03.12} UT,   111.3 [sec] since BAT Trigger Time
TAM[0-3]:        327.66 237.22 261.52 243.56
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       118.26d {+07h 53m 03s}  +20.90d {+20d 53' 53"}
SUN_DIST:         81.05 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.19d {+22h 48m 47s}   -2.03d {-02d 01' 47"}
MOON_DIST:        54.16 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.78,-27.30 [deg] galactic lon,lat of the burst
ECL_COORDS:       35.80, 22.62 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 1.20 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Jul 11 06:11:44 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     457553,   Seg_Num: 0
GRB_RA:           24.5799d {+01h 38m 19.1s} (J2000),
                  24.7463d {+01h 38m 59.1s} (current),
                  23.8610d {+01h 35m 26.6s} (1950)
GRB_DEC:         +34.5869d {+34d 35' 12.8"} (J2000),
                 +34.6453d {+34d 38' 43.1"} (current),
                 +34.3330d {+34d 19' 58.8"} (1950)
GRB_ERROR:       5.4 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       35 [cnts]
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22263.12 SOD {06:11:03.12} UT,   111.3 [sec] since BAT Trigger Time
CENTROID_X:      289.66,  raw= 290  [pixels]
CENTROID_Y:      301.63,  raw= 302  [pixels]
ROLL:            70.61 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   8.55
GRB_POS_XRT_Z:   -33.07
IMAGE_URL:       sw00457553000msxps_rw.img
SUN_POSTN:       118.26d {+07h 53m 03s}  +20.90d {+20d 53' 53"}
SUN_DIST:         81.05 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.20d {+22h 48m 47s}   -2.03d {-02d 01' 45"}
MOON_DIST:        54.16 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.78,-27.30 [deg] galactic lon,lat of the burst
ECL_COORDS:       35.80, 22.62 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Jul 11 06:11:54 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     457553,   Seg_Num: 0
GRB_RA:           24.5799d {+01h 38m 19.1s} (J2000),
                  24.7463d {+01h 38m 59.1s} (current),
                  23.8610d {+01h 35m 26.6s} (1950)
GRB_DEC:         +34.5869d {+34d 35' 12.8"} (J2000),
                 +34.6453d {+34d 38' 43.1"} (current),
                 +34.3330d {+34d 19' 58.8"} (1950)
GRB_ERROR:       5.4 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       35 [cnts]
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22263.12 SOD {06:11:03.12} UT,   111.3 [sec] since BAT Trigger Time
CENTROID_X:      289.66,  raw= 290  [pixels]
CENTROID_Y:      301.63,  raw= 302  [pixels]
ROLL:            70.61 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   8.55
GRB_POS_XRT_Z:   -33.07
IMAGE_URL:       sw00457553000msxps_rw.img
SUN_POSTN:       118.26d {+07h 53m 03s}  +20.90d {+20d 53' 53"}
SUN_DIST:         81.05 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.20d {+22h 48m 47s}   -2.03d {-02d 01' 43"}
MOON_DIST:        54.16 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.78,-27.30 [deg] galactic lon,lat of the burst
ECL_COORDS:       35.80, 22.62 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Jul 11 06:12:42 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     457553,   Seg_Num: 0
GRB_RA:           24.564d {+01h 38m 15s} (J2000),
                  24.730d {+01h 38m 55s} (current),
                  23.845d {+01h 35m 23s} (1950)
GRB_DEC:         +34.572d {+34d 34' 20"} (J2000),
                 +34.631d {+34d 37' 50"} (current),
                 +34.318d {+34d 19' 05"} (1950)
GRB_DATE:        15761 TJD;   200 DOY;   11/07/19
GRB_TIME:        22151.86 SOD {06:09:11.86} UT
TRIGGER_INDEX:   474
GRB_PHI:         166.92 [deg]
GRB_THETA:        43.55 [deg]
DELTA_TIME:      -63.00 [sec]
TRIGGER_DUR:     3.072 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.29 [sigma]
IMAGE_SIGNIF:    7.49 [sigma]
LC_URL:          sw00457553000msb.lc
SUN_POSTN:       118.26d {+07h 53m 03s}  +20.90d {+20d 53' 53"}
SUN_DIST:         81.06 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.20d {+22h 48m 49s}   -2.03d {-02d 01' 33"}
MOON_DIST:        54.13 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.77,-27.31 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       35.78, 22.61 [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 = 55.78,20.35 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Jul 11 06:15:57 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     457553,   Seg_Num: 0
POINT_RA:         24.571d {+01h 38m 17s} (J2000)
POINT_DEC:       +34.582d {+34d 34' 56"} (J2000)
POINT_ROLL:      70.614d
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22272.88 SOD {06:11:12.88} UT,   121.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.701
N_STARS:         37
X_OFFSET:        440 [pixels]
Y_OFFSET:        616 [pixels]
X_MAX:           1399 [pixels]
Y_MAX:           1575 [pixels]
DET_THRESH:      22
PHOTO_THRESH:    13
SL_URL:          sw00457553000msufc0121.fits
SUN_POSTN:       118.27d {+07h 53m 04s}  +20.90d {+20d 53' 51"}
SUN_DIST:         81.06 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.23d {+22h 48m 55s}   -2.02d {-02d 00' 54"}
MOON_DIST:        54.12 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.77,-27.30 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.79, 22.62 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Jul 11 06:16:20 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     457553,   Seg_Num: 0
POINT_RA:         24.571d {+01h 38m 17s} (J2000)
POINT_DEC:       +34.582d {+34d 34' 56"} (J2000)
POINT_ROLL:      70.614d
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22272.88 SOD {06:11:12.88} UT,   121.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.701
N_STARS:         37
X_OFFSET:        440 [pixels]
Y_OFFSET:        616 [pixels]
X_MAX:           1399 [pixels]
Y_MAX:           1575 [pixels]
DET_THRESH:      22
PHOTO_THRESH:    13
SL_URL:          sw00457553000msufc0121.fits
SUN_POSTN:       118.27d {+07h 53m 04s}  +20.90d {+20d 53' 51"}
SUN_DIST:         81.06 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.23d {+22h 48m 55s}   -2.01d {-02d 00' 50"}
MOON_DIST:        54.11 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.77,-27.30 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.79, 22.62 [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 Jul 11 06:18:15 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     457553,   Seg_Num: 0
POINT_RA:         24.571d {+01h 38m 17s} (J2000)
POINT_DEC:       +34.582d {+34d 34' 56"} (J2000)
ROLL:            70.614d
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22272.88 SOD {06:11:12.88} UT,   121.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     332748680
X_OFFSET:        838 [pixels]
Y_OFFSET:        817 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       998
Y_GRB_POS:       977
BINNING_INDEX:   1
IM_URL:          sw00457553000msuni0129.fits
SUN_POSTN:       118.27d {+07h 53m 04s}  +20.90d {+20d 53' 50"}
SUN_DIST:         81.06 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.25d {+22h 48m 59s}   -2.01d {-02d 00' 27"}
MOON_DIST:        54.10 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.77,-27.30 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.79, 22.62 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Jul 11 06:18:30 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     457553,   Seg_Num: 0
POINT_RA:         24.571d {+01h 38m 17s} (J2000)
POINT_DEC:       +34.582d {+34d 34' 56"} (J2000)
ROLL:            70.614d
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22272.88 SOD {06:11:12.88} UT,   121.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     332748680
X_OFFSET:        838 [pixels]
Y_OFFSET:        817 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       998
Y_GRB_POS:       977
BINNING_INDEX:   1
IM_URL:          sw00457553000msuni0129.fits
SUN_POSTN:       118.27d {+07h 53m 04s}  +20.90d {+20d 53' 50"}
SUN_DIST:         81.06 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.25d {+22h 48m 59s}   -2.01d {-02d 00' 24"}
MOON_DIST:        54.10 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.77,-27.30 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.79, 22.62 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #12173
T. Sakamoto (NASA/UMBC), A. P. Beardmore (U Leicester), J. R. Cummings (NASA/UMBC), M. De Pasquale (UCL-MSSL), C. Guidorzi (U Ferrara), O. M. Littlejohns (U Leicester), C. B. Markwardt (NASA/GSFC), S. R. Oates (UCL-MSSL), C. Pagani (U Leicester), K. L. Page (U Leicester), D. M. Palmer (LANL), A. Rowlinson (U Leicester), C. J. Saxton (UCL-MSSL) and M. H. Siegel (PSU) report on behalf of the Swift Team:
At 06:09:11 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 110719A (trigger=457553). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 24.564, +34.572 which is
```
   RA(J2000) = 01h 38m 15s
   Dec(J2000) = +34d 34' 20"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single noisy FRED structure with a duration of about 50 sec. The peak count rate was ~1000 counts/sec (15-350 keV), at ~T-1 sec after the trigger.
The XRT began observing the field at 06:11:03.1 UT, 111.3 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 24.5799, +34.5869 which is equivalent to:
```
   RA(J2000)  = 01h 38m 19.17s
   Dec(J2000) = +34d 35' 12.8"
```
with an uncertainty of 5.6 arcseconds (radius, 90% containment). This location is 71 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy.
UVOT took a finding chart exposure of 150 seconds with the White filter starting 121 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 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.04.
Burst Advocate for this burst is T. Sakamoto (Taka.Sakamoto 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 19 Jul 11 06:22:44 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     457553,   Seg_Num: 0
POINT_RA:         24.571d {+01h 38m 17s} (J2000)
POINT_DEC:       +34.580d {+34d 34' 48"} (J2000)
POINT_ROLL:      70.615d
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22430.88 SOD {06:13:50.88} UT,   279.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        3.172
N_STARS:         19
X_OFFSET:        518 [pixels]
Y_OFFSET:        497 [pixels]
X_MAX:           1477 [pixels]
Y_MAX:           1456 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00457553000msufc0279.fits
SUN_POSTN:       118.27d {+07h 53m 05s}  +20.90d {+20d 53' 48"}
SUN_DIST:         81.06 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.28d {+22h 49m 07s}   -1.99d {-01d 59' 33"}
MOON_DIST:        54.06 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.77,-27.30 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.79, 22.62 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Jul 11 06:24:28 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     457553,   Seg_Num: 0
POINT_RA:         24.571d {+01h 38m 17s} (J2000)
POINT_DEC:       +34.580d {+34d 34' 48"} (J2000)
ROLL:            70.615d
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22430.88 SOD {06:13:50.88} UT,   279.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     332748838
X_OFFSET:        838 [pixels]
Y_OFFSET:        817 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       998
Y_GRB_POS:       977
BINNING_INDEX:   1
IM_URL:          sw00457553000msuni0287.fits
SUN_POSTN:       118.27d {+07h 53m 05s}  +20.90d {+20d 53' 48"}
SUN_DIST:         81.06 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.29d {+22h 49m 11s}   -1.99d {-01d 59' 12"}
MOON_DIST:        54.05 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.77,-27.30 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.79, 22.62 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 19 Jul 11 06:24:44 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     457553,   Seg_Num: 0
POINT_RA:         24.571d {+01h 38m 17s} (J2000)
POINT_DEC:       +34.580d {+34d 34' 48"} (J2000)
ROLL:            70.615d
IMG_START_DATE:  15761 TJD;   200 DOY;   11/07/19
IMG_START_TIME:  22430.88 SOD {06:13:50.88} UT,   279.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     332748838
X_OFFSET:        838 [pixels]
Y_OFFSET:        817 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       998
Y_GRB_POS:       977
BINNING_INDEX:   1
IM_URL:          sw00457553000msuni0287.fits
SUN_POSTN:       118.27d {+07h 53m 05s}  +20.90d {+20d 53' 47"}
SUN_DIST:         81.06 [deg]   Sun_angle= 6.2 [hr] (West of Sun)
MOON_POSTN:      342.30d {+22h 49m 11s}   -1.99d {-01d 59' 09"}
MOON_DIST:        54.05 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      133.77,-27.30 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.79, 22.62 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #12175
W. H. Baumgartner (GSFC/UMBC), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 110719A (trigger #457553) (Sakamoto, et al., GCN Circ. 12173). The BAT ground-calculated position is RA, Dec = 24.570, 34.578 deg, which is
```
   RA(J2000)  =  01h 38m 16.8s 
   Dec(J2000) = +34d 34' 39.0" 
```
with an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 30%.
The mask-weighted light curve shows a FRED-like peak starting at ~T-5 sec, peaking at ~T+1 sec, and returning to background around T+95 sec. T90 (15-350 keV) is 41.0 +- 7.4 sec (estimated error including systematics).
The time-averaged spectrum from T-2.0 to T+42.9 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.63 +- 0.15. The fluence in the 15-150 keV band is 1.8 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+2.02 sec in the 15-150 keV band is 1.3 +- 0.3 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/457553/BA/
GCN Circular #12176
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 1852 s of XRT Photon Counting mode data and 1 UVOT images for GRB 110719A, 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 = 24.58085, +34.58616 which is equivalent to:
```
RA (J2000): 01h 38m 19.40s
Dec (J2000): +34d 35' 10.2"
```
with an uncertainty of 2.5 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 #12177
A. Volnova (SAI MSU), L. Elenin (ISON), I. Molotov (ISON), A. Pozanenko=20 (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 110719A (Sakamoto et al. GCN 12173) with=20 0.45-m telescope =CFf ISON-NM observatory on July 19 starting (UT) 06:5= 4:39.=20 We took 30 unfiltered images. In a stacked image we do not detect any=20 source within enhanced XRT error circle (Goad et al., GCN 12176) up to=20 19.7m. The photometry is based on the USNO-B1.0 1245-0023215 star=20 (RA=3D01:38:11.95, Dec=3D+34:35:52.6) assuming R=3D13.72.
```
T0+         Filter,   Exposure, OT,   Upper Limit
(mid, d)               (s)

0.04370  none     30x60s     n/d    19.7
```
GCN Circular #12178
C. Pagani (U. Leicester) and T. Sakamoto (NASA/UMBC) report on behalf of the Swift-XRT team:
We have analysed 4.5 ks of XRT data for GRB 110719A (Sakamoto et al. GCN Circ. 12173), from 117 s to 12.1 ks after the BAT trigger. The data comprise 258 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ 12176).
The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=0.59 (+0.26, -0.30). At T+219 s the decay steepens to an alpha of 2.6 (+/-0.4) before breaking again at T+1393 s to a final decay with index alpha=0.7 (+0.7, -0.6).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.39 (+0.13, -0.12). The best-fitting absorption column is 9.0 (+3.8, -3.4) x 10^20 cm^-2, in excess of the Galactic value of 4.0 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.58 (+0.26, -0.15) and a best-fitting absorption column consistent with the Galactic value. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.6 x 10^-11 (4.9 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     4.0 (+5.9, -0) x 10^20 cm^-2
Galactic foreground: 4.0 x 10^20 cm^-2
Excess significance: <1.6 sigma
Photon index:	     1.58 (+0.26, -0.15)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00457553.
This circular is an official product of the Swift-XRT team.
GCN Circular #12180
M. De Pasquale, C.J. Saxton (MSSL-UCL) and T. Sakamoto (NASA/UMBC) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 110719A 121 s after the BAT trigger (Sakamoto et al., GCN Circ. 12173). No optical afterglow consistent with the XRT position (Pagani et al., GCN Circ. 12173) is detected in the initial UVOT exposures and in the summed exposures taken in all filters. Preliminary 3-sigma upper limits using the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) for the first finding chart (FC) exposure and subsequent exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC           121          271          147 	>20.2
u_FC               279          529          246 	>19.2
white              121        17904         1080 	>21.3
v                 4848        10563         1143 	>20.2
b                  535        17151         1101 	>21.1
u                  279        16239         1328 	>20.5
w1                5258        12124          836 	>20.4
m2                5053        11468         1082 	>20.8
w2                4643         6280          393 	>20.2
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.04 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #12181
Andrew J. Levan (Univ. Warwick), Stefano Covino, Andrea Melandri (INAF/ OABr), Daniele Malesani, Antonio de Ugarte Postigo, Johan P.U. Fynbo (DARK/NBI), report on behalf of the X-shooter GRB GTO collaboration:
We observed the field of GRB 110719A (Sakamoto et al., GCN 12173) with the ESO VLT equipped with X-shooter. We could only take a short acquisition image, with mean time 2011 July 19.42 UT (3.95 hr after the GRB). No new object is detected within the refined XRT error circle (Goad et al., GCN 12176), down to a limiting magnitude z > 22.5 (AB), calibrated against SDSS stars in the field.
We note that the inferred limit on the broad-band spectral slope is beta_OX < 0.64 (computed between the z band and 1 keV). Given the hard X-ray spectral slope beta_X = 0.58 (Pagani et al., GCN 12178), our non detection is consistent with the extrapolation of the X-ray spectrum. Our data do not allow to classify GRB 110719A as dark.
GCN Circular #12182
M.Sokolowski,T.Batsch,A.Majcher,A.Majczyna,K.Nawrocki,J.Uzycki,G.Wrochna (IPJ, Swierk), M.Cwiok,W.Dominik,L.W.Piotrowski,A.F.Zarnecki (University of Warsaw), K.Malek,L.Mankiewicz,R.Opiela,M.Siudek,V.Repei (CFT PAN), G.Kasprowicz,M.Zaremba (Warsaw University of Technology), from the "Pi of the Sky" collaboration ( http://grb.fuw.edu.pl ).
The wide field "Pi of the Sky South" apparatus, installed in the private observatory of Alain Maury in San Pedro de Atacama ( http://grb.fuw.edu.pl/pi/index.html#spda_site.htm ) has observed the position of GRB 110719A 105s after the GRB. No new object has been found within the Swift-XRT error box.
```
t_start - t0    start (UT)   end (UT)     3-sigma limit
   105sec        06:10:56   06:11:06 UT      11.0 mag
```
The field was observed until 06:29:34 UT, no new object brighter then 11.0 mag was observed. The limit on 20 coadded images is 11.5 mag.
We acknowladge great support received from Alain Maury at SPdA Observatory.
GCN Circular #12183
T. Sakamoto (UMBC/GSFC), D. Donato (UMD/GSFC), N. Gehrels (GSFC), T. Okajima (GSFC), Y. Urata (NCU)
We observed the field of GRB 110719A detected by Swift (trigger #457553; Sakamoto et al., GCN Circ. 12173) with the 14-inch Goddard Robotic Telescope (GRT) located at the Goddard Geophysical and Astronomical Observatory (http://cddisa.gsfc.nasa.gov/ggao/).
A total 127 images of 5 sec exposures were taken in the R filter starting from July 19 06:11:29 (UT), about 137 seconds after the trigger (92 seconds after the BAT position notice), and stopped on July 19 06:31:01 (UT). We do not detect the optical afterglow both in the individual images and the stacked image inside the XRT error circle (Goad et al., GCN #12176). The estimated five sigma upper limit of the combined image (total exposure of 635 sec) is ~18.2 mag using the USNO-B1 catalog.
GCN Circular #12189
A. Zauderer, G. Petitpas and E. Berger (Harvard/CfA) report on behalf of a larger collaboration:
"We observed GRB 110719A (GCN #12173) with the SMA at 345 GHz starting on 2011 July 19.6 (7.5 hours after the burst) for a total integration time on source of 4.6 hours. No counterpart is detected within the XRT error circle (GCN #12176) to a 3-sigma upper limit of 2.1 mJy/bm.
We acknowledge and thank the SMA observatory staff for their support of these rapid response observations."

Back to JG's homepage

Jochen Greiner, last update: 21-Jul-2011 [Disclaimer]