Gamma-ray Burst 100719A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 19 Jul 10 03:31:38 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     429357,   Seg_Num: 0
GRB_RA:          112.263d {+07h 29m 03s} (J2000),
                 112.393d {+07h 29m 34s} (current),
                 111.649d {+07h 26m 36s} (1950)
GRB_DEC:          -5.837d {-05d 50' 12"} (J2000),
                  -5.859d {-05d 51' 32"} (current),
                  -5.733d {-05d 43' 57"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       19388 [cnts]    Image_Peak=340 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   300     E_range: 25-100 keV
BKG_INTEN:       174462 [cnts]
BKG_TIME:        12602.00 SOD {03:30:02.00} UT
BKG_DUR:         40 [sec]
GRB_DATE:        15396 TJD;   200 DOY;   10/07/19
GRB_TIME:        12657.93 SOD {03:30:57.93} UT
GRB_PHI:         -116.15 [deg]
GRB_THETA:        27.53 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     7.41 [sigma]
IMAGE_SIGNIF:    7.27 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +2  -3 -100  +1 -88  +0 
SUN_POSTN:       118.39d {+07h 53m 35s}  +20.87d {+20d 52' 29"}
SUN_DIST:         27.38 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      211.64d {+14h 06m 34s}  -18.02d {-18d 01' 08"}
MOON_DIST:        96.92 [deg]
MOON_ILLUM:      58 [%]
GAL_COORDS:      222.45,  5.64 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      115.11,-27.36 [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 = 176.40,2.68 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 19 Jul 10 03:34:51 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     429357,   Seg_Num: 0
GRB_RA:          112.263d {+07h 29m 03s} (J2000),
                 112.393d {+07h 29m 34s} (current),
                 111.649d {+07h 26m 36s} (1950)
GRB_DEC:          -5.837d {-05d 50' 12"} (J2000),
                  -5.859d {-05d 51' 32"} (current),
                  -5.733d {-05d 43' 57"} (1950)
GRB_DATE:        15396 TJD;   200 DOY;   10/07/19
GRB_TIME:        12657.93 SOD {03:30:57.93} UT
TRIGGER_INDEX:   300
GRB_PHI:         -116.15 [deg]
GRB_THETA:        27.53 [deg]
DELTA_TIME:      7.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     7.41 [sigma]
IMAGE_SIGNIF:    7.27 [sigma]
LC_URL:          sw00429357000msb.lc
SUN_POSTN:       118.40d {+07h 53m 35s}  +20.87d {+20d 52' 28"}
SUN_DIST:         27.38 [deg]   Sun_angle= 0.4 [hr] (West of Sun)
MOON_POSTN:      211.67d {+14h 06m 41s}  -18.03d {-18d 01' 41"}
MOON_DIST:        96.94 [deg]
MOON_ILLUM:      58 [%]
GAL_COORDS:      222.45,  5.64 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      115.11,-27.36 [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 = 176.40,2.68 [deg].

GCN Circular #10963
R. Margutti (INAF-OAB), W. H. Baumgartner (GSFC/UMBC), J. M. Gelbord (PSU), E. A. Hoversten (PSU), J. Mao (INAF-OAB), C. B. Markwardt (CRESST/GSFC/UMD), D. M. Palmer (LANL), T. Sakamoto (NASA/UMBC), M. H. Siegel (PSU), T. N. Ukwatta (GSFC/GWU) and L. Vetere (PSU) report on behalf of the Swift Team:
At 03:30:57 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 100719A (trigger=429357). Swift did not slew to the burst due to a sun observing constraint. The BAT on-board calculated location is RA, Dec 112.263, -5.837 which is
```
   RA(J2000) = 07h 29m 03s
   Dec(J2000) = -05d 50' 12"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peak structure with a duration of about 25 sec. The peak count rate was ~1500 counts/sec (15-350 keV), at ~0 sec after the trigger.
The source will remain in Sun constraint until August 27, and therefore there will be no XRT or UVOT observations.
Burst Advocate for this burst is R. Margutti (raffaella.margutti AT brera.inaf.it). 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 Circular #10964
H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), R. Margutti (INAF-OAB), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), 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-61 to T+242 sec from recent telemetry downlinks, we report further analysis of BAT GRB 100719A (trigger #429357) (Margutti, et al., GCN Circ. 10963). The BAT ground-calculated position is RA, Dec = 112.319, -5.857 deg which is
```
   RA(J2000)  =  07h 29m 16.6s 
   Dec(J2000) = -05d 51' 24.4" 
```
with an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 57%.
The mask-weighted light curve shows a few overlapping peaks starting at ~T-5 sec, peaking at ~T+2 sec, and ending at ~T+80 sec. T90 (15-350 keV) is 36.0 +- 9.2 sec (estimated error including systematics).
The time-averaged spectrum from T-3.9 to T+35.1 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.69 +- 0.25. The fluence in the 15-150 keV band is 5.3 +- 0.9 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+2.06 sec in the 15-150 keV band is 0.6 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/429357/BA/

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Jochen Greiner, last update: 19-Jul-2010 [Disclaimer]