Gamma-ray Burst 051114

(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:     Tue 15 Nov 05 02:21:10 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     163765,   Seg_Num: 0
GRB_RA:          226.274d {+15h 05m 06s} (J2000),
                 226.308d {+15h 05m 14s} (current),
                 225.985d {+15h 03m 56s} (1950)
GRB_DEC:         +60.150d {+60d 09' 00"} (J2000),
                 +60.128d {+60d 07' 39"} (current),
                 +60.343d {+60d 20' 35"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4531 [cnts]    Image_Peak=161 [image_cnts]
TRIGGER_DUR:     2.000 [sec] 
TRIGGER_INDEX:   10427     E_range: 25-100 keV
BKG_INTEN:       29520 [cnts]
BKG_TIME:        55336.00 SOD {15:22:16.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        13688 TJD;   318 DOY;   05/11/14
GRB_TIME:        55355.63 SOD {15:22:35.63} UT
GRB_PHI:         151.50 [deg]
GRB_THETA:        26.70 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     24.00 [sigma]
IMAGE_SIGNIF:    9.59 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  +3 -100  +0 -77  +1 
SUN_POSTN:       229.95d {+15h 19m 47s}  -18.36d {-18d 21' 29"}
SUN_DIST:         78.54 [deg]
MOON_POSTN:       31.82d {+02h 07m 18s}  +15.00d {+15d 00' 02"}
MOON_DIST:       103.97 [deg]
MOON_ILLUM:      98 [%]
GAL_COORDS:       97.73, 49.93 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      177.50, 69.86 [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 Notice was ground-reprocessed from flight-data.  
COMMENTS:          
COMMENTS:        SWIFT-BAT GRB Coordinates.   
COMMENTS:        This is a ground analysis hand-issued 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:        The Sun and Moon positions are NOT valid.  
COMMENTS:        The Galactic coordinates are NOT valid  
COMMENTS:        The Ecliptic coordinates are NOT valid 
COMMENTS:        The GRB intensity is NOT valid  
COMMENTS:        Other fields should be right.

red DSS finding chart ps-file
GCN Circular #4272
J. Cummings (GSFC/NRC), S. Barthelmy (GSFC), N. Gehrels (GSFC), D. Palmer (LANL) on behalf of the Swift-BAT team:
At 04:11:30 UT, Swift-BAT triggered and located GRB 051114 (trigger=163844). The on-board software did not locate this burst with sufficient significance, however ground processing was able to extract a location. The BAT ground calculated location is RA,Dec 226.274d,+60.150d {15h 05m 06s,+60d 09' 00"} (J2000), with an uncertainty of 3 arcmin (radius, 90% containment, stat+sys). The BAT light curve shows two short peaks separated by ~1 sec with a total duration of 2 sec. The peak count rate was ~1500 counts/sec (15-350 keV), at ~0.5 seconds after the trigger.
We note that due a handling mistake on the ground, the GCN BAT_POSITION Notice was generated with incorrect values in the following fields: TRIGGER_NUM, GRB_INTEN, BKG_INTEN, BKG_TIME, BKG_DUR, GRB_TIME, MERIT_PARAMS. All the other numbers in the Notice are correct (including the Sun & Moon locations and the Galactic and Ecliptic coordinates).
GCN Circular #4275
T. Sakamoto (GSFC/NRC), L. Barbier (GSFC), S. Barthelmy (GSFC), J. Cummings (GSFC/NRC), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (UMD), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), F. Marshall (GSFC), D. Palmer (LANL), A. Parsons (GSFC), G. Sato (ISAS), A. Smale (NASA HQ), J. Tueller (GSFC), on behalf of the Swift-BAT team:
Using the full data set from T-4 to T+16 sec (all the data we will get on this ground-detected burst), we report further analysis of BAT GRB 051114 (trigger #163844) (Cummings, et al., GCN 4272). The BAT ground-calculated position is (RA,Dec) = 226.266d,+60.156d {15h 05m 04s,60d 09' 22"} [deg; J2000] +- 2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 78%.
The light curve shows two peaks of roughly equal intensity, the second slightly softer, one from T+0.2 to T+0.9 sec and one from T+1.3 to T+2.7 sec. T90 (15-350 keV) is (2.2 +- 0.3) sec (estimated error including systematics).
The power law index of the time-averaged spectrum is 1.22 +- 0.27. The fluence in the 15-150 keV band is (1.32 +- 0.24) x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+0.2 sec in the 15-150 keV band is (0.73 +- 0.16) ph/cm2/sec. All the quoted errors are at the 90% confidence level.
GCN Circular #4276
Dale A. Frail (NRAO) reports on behalf of a larger collaboration:
"We observed the field of the burst GRB 051114 (GCN 4272; GCN 4275) with the Very Large Array at 8.5 GHz around November 15.58 UT. Within the 2-arcmin radius of the BAT position (GCN 4275) we find no radio emission above 4-sigma, for an rms noise of 50 microJy.
The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."
GCN Circular #4279
V. Mangano, G. Cusumano, V. La Parola, T. Mineo (INAF-IASFPA), D. Burrows, J. Kennea (PSU), L. Cominsky (Sonoma State U.) and J. Norris (GSFC) on behalf of the Swift-XRT team:
The Swift-XRT started a 13.6 ks ToO observation of the field of GRB051114 (Cummings at al., GCN 4272) on November 15 at 15:18:23 UT, 35 hours after the burst trigger. No new source was detected within the BAT refined error circle (Sakamoto at al., GCN 4275) down to a limiting flux of 2.3e-14 ergs/cm/cm/s.
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Jochen Greiner, last update: 16-Nov-2005 [Disclaimer]