Gamma-ray Burst 031111B

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:          GCN/HETE BURST POSITION NOTICE
  NOTICE_DATE:    Tue 11 Nov 03 21:03:54 UT   
  NOTICE_TYPE:    HETE Ground Analysis
  TRIGGER_NUM:    2925,   Seq_Num: 1
  GRB_DATE:       12954 TJD;   315 DOY;   03/11/11   
  GRB_TIME:       71487.77 SOD {19:51:27.77} UT
  TRIGGER_SOURCE: Trigger on the 2-30 keV band.
  WXM_SIG/NOISE:  0.1 sig/noise  on a 13.280 [sec] timescale
  SC_-Z_RA:        28 [deg]
  SC_-Z_DEC:       24 [deg]
  SC_LONG:         46 [deg East] 
  WXM_CNTR_RA:     59.770d {+03h 59m 05s} (J2000),
                   59.832d {+03h 59m 20s} (current),
                   58.965d {+03h 55m 52s} (1950)
  WXM_CNTR_DEC:   +34.605d {+34d 36' 18"} (J2000),
                  +34.616d {+34d 36' 57"} (current),
                  +34.463d {+34d 27' 47"} (1950)
  WXM_MAX_SIZE:   30.00 [arcmin] diameter
  WXM_LOC_SN:     7 sig/noise (pt src in image)
  WXM_IMAGE_SN:   X= 3.0 Y= 3.0 [sig/noise]
  WXM_LC_SN:      X= 5.0 Y= 5.0 [sig/noise]     
  SUN_POSTN:      226.55d {+15h 06m 12s}  -17.47d {-17d 28' 17"}
  SUN_DIST:       159.16 [deg]
  MOON_POSTN:      77.87d {+05h 11m 30s}  +25.54d {+25d 32' 25"}
  MOON_DIST:       18.02 [deg] 
  MOON_ILLUM:     93 [%]
  GAL_COORDS:     161.21,-13.97 [deg] galactic lon,lat of the burst
  ECL_COORDS:     64.74,13.78 [deg] ecliptic lon,lat of the burst
  COMMENTS:       Definite GRB.
  COMMENTS:       WXM error box is circular; not rectangular.
  COMMENTS:       Burst_Validity flag is true.
  COMMENTS:       WXM data refined since S/C_Last Notice.
  

• GCN notice #2453
  M. Uemura, R. Ishioka, T. Kato (Kyoto U.) and N. Nakashima, C. Nakayama and H. Yamaoka (Kyushu U.) report on behalf of VSNET-GRB collaboration:
  "We observed the position of GRB 031111B (= H2925) starting at Nov. 12.45 UT (15 hours after burst) with the 0.25-m telescope (+unfiltered CCD) at Kyoto University. The stacked image (109 x 30s) covers the central part (about 14%) of the entire error circle (diameter 30'). Our field of view can be seen at: http://www.rc.kyushu-u.ac.jp/~yamaoka/GRB031111B/FOV.gif Visual comparison of the stacked image to the DSS 2 red image shows no new object down to a limiting magnitude of about 17.2 (estimated with USNO-A2.0 red magnitudes of many field stars).
  This message can be cited."