Gamma-ray Burst 010612

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

   
  TITLE:          GCN/HETE BURST POSITION NOTICE
  NOTICE_DATE:    Tue 12 Jun 01 02:33:28 UT
  NOTICE_TYPE:    HETE Alert
  TRIGGER_NUM:    1546,   Seq_Num: 1
  GRB_DATE:       12072 TJD;   163 DOY;   01/06/12
  GRB_TIME:       9193.49 SOD {02:33:13.49} UT
  TRIGGER_SOURCE: FREGATE Trigger,
  GAMMA_RATE:     293  [cnts/s] on a 0.160 [sec] timescale
  SC_-Z_RA:       260 [deg]
  SC_-Z_DEC:      -23 [deg]
  SUN_POSTN:       80.44d {+05h 21m 45s}  +23.15d {+23d 08' 51"}
  SUN_DIST:       103.77 [deg]
  MOON_POSTN:     332.42d {+22h 09m 40s}  -15.87d {-15d 52' 21"}
  MOON_DIST:        9.85 [deg]
  MOON_ILLUM:     69 [%]
  GAL_COORDS:     225.64,-60.42 [deg] lon,lat of the burst
  COMMENTS:       Possible GRB.
  COMMENTS:       Possible XRB.
  

• GCN/BACODINE POSITION NOTICE
  

  TITLE:          GCN/HETE BURST POSITION NOTICE
  NOTICE_DATE:    Tue 12 Jun 01 18:49:07 UT
  NOTICE_TYPE:    HETE Update
  TRIGGER_NUM:    1546,   Seq_Num: 2
  GRB_DATE:       12072 TJD;   163 DOY;   01/06/12
  GRB_TIME:       9193.49 SOD {02:33:13.49} UT
  TRIGGER_SOURCE: FREGATE Trigger, 
  GAMMA_RATE:     293  [cnts/s] on a 0.160 [sec] timescale
  XG_TRIG_TIME:   1.280 [sec]
  WXM_SIG/NOISE:  24 trigger sig/noise
  SC_-Z_RA:       260 [deg]
  SC_-Z_DEC:      -23 [deg]
  WXM_CNTR_RA:   272.868d {+18h 11m 28s} (J2000),
                 272.889d {+18h 11m 33s} (current),
                 272.159d {+18h 08m 38s} (1950)
  WXM_CNTR_DEC:  -13.855d {-13d 51' 16"} (J2000),
                 -13.854d {-13d 51' 15"} (current),
                 -13.867d {-13d 52' 00"} (1950)
  WXM_MAX_SIZE:    240.60 [arcmin] diameter
  WXM_LOC_SN:      1 image sig/noise
  SUN_POSTN:       80.44d {+05h 21m 45s}  +23.15d {+23d 08' 51"}
  SUN_DIST:       164.99 [deg]
  MOON_POSTN:     332.42d {+22h 09m 40s}  -15.87d {-15d 52' 21"}
  MOON_DIST:       57.38 [deg]
  MOON_ILLUM:     69 [%]
  GAL_COORDS:     16.06,2.33 [deg] lon,lat of the burst
  COMMENTS:       Possible GRB.
  COMMENTS:       Possible XRB.
  COMMENTS:       WXM error box is circular; not rectangular.
  COMMENTS:       THIS IS A TEST. REPEAT THIS IS A TEST.
  

• GCN/BACODINE POSITION NOTICE
  

  TITLE:          GCN/HETE BURST POSITION NOTICE
  NOTICE_DATE:    Thu 14 Jun 01 23:52:17 UT
  NOTICE_TYPE:    HETE Ground Analysis
  TRIGGER_NUM:    1546,   Seq_Num: 3
  GRB_DATE:       12072 TJD;   163 DOY;   01/06/12
  GRB_TIME:       9193.49 SOD {02:33:13.49} UT
  TRIGGER_SOURCE: FREGATE Trigger, 
  GAMMA_RATE:     293  [cnts/s] on a 0.160 [sec] timescale
  XG_TRIG_TIME:   1.280 [sec]
  WXM_SIG/NOISE:  24 trigger sig/noise
  SC_-Z_RA:       259 [deg]
  SC_-Z_DEC:      -23 [deg]
  WXM_CNTR_RA:   270.823d {+18h 03m 18s} (J2000),
                 270.847d {+18h 03m 23s} (current),
                 270.008d {+18h 00m 02s} (1950)
  WXM_CNTR_DEC:  -32.134d {-32d 08' 01"} (J2000),
                 -32.134d {-32d 08' 01"} (current),
                 -32.136d {-32d 08' 09"} (1950)
  WXM_MAX_SIZE:    72.00 [arcmin] diameter
  WXM_LOC_SN:      1 image sig/noise
  SUN_POSTN:       80.44d {+05h 21m 45s}  +23.15d {+23d 08' 51"}
  SUN_DIST:       167.14 [deg]
  MOON_POSTN:     332.42d {+22h 09m 40s}  -15.87d {-15d 52' 21"}
  MOON_DIST:       57.77 [deg]
  MOON_ILLUM:     69 [%]
  GAL_COORDS:     359.16,-4.90 [deg] 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 Final Notice.
  COMMENTS:       Burst coordinates consistent with IPN annulus.
  

• GCN notice #1065
  K. Hurley, on behalf of the Ulysses GRB team, C. Guidorzi, E. Montanari, and F. Frontera, on behalf of the BeppoSAX GRBM team, and T. Cline, E. Mazets, and S. Golenetskii, on behalf of the Konus-Wind GRB team, report:
  Ulysses, BeppoSAX, and Konus observed GRB010612 (HETE Trigger 1546, GCN/HETE burst position socket message of June 14 23:52:17). As observed by Ulysses, this burst had a duration ~30 s, a 25-100 keV fluence ~6.5E-06 erg/cm^2, and a peak flux over 0.25 s of centered at RA(2000)=195.6963 o, Decl(2000)=-20.2323 o, whose radius is 67.0343 +/- .1691 o (3 sigma). This annulus intersects the HETE WXM error circle to give an approximately trapezoidal error box whose coordinates are:
  

  RA(2000)     Decl(2000)
  270.9803     -32.7191
  270.7269     -31.5396
  270.5669     -32.6937
  270.3544     -31.6848
  

  This error box has an area ~1500 sq. arcminutes, or a factor of annulus can be improved substantially.(Please ignore the "unknown tilde escape" message, generated by an unhappy terminal)
• GCN notice #1066
  The previous message, GCN 1065, was truncated by the terminal. The last paragraph should have read:
  This error box has an area of approximately 1500 sq. arcminutes, or a factor of about 2.7 smaller than the WXM error circle. It is unlikely that this annulus can be improved substantially.