Gamma-ray Burst 000730B

On July 30, 2000 at 14:00:27 UT a burst was detected by Ulysses, Konus-Wind, and NEAR.

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN notice #759
  K. Hurley, on behalf of the Ulysses GRB team, T. Cline, on behalf of the Konus-Wind and NEAR GRB teams, and E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team, report:
  Ulysses, Konus-Wind, and NEAR observed this burst at 50427 s UT. As observed by Ulysses, it had a duration of ~10 s, a 25-100 keV fluence of ~1.5x10^-5 erg/cm^2, and a peak flux over 0.5 s of 2.4x10^-6 erg/cm^2 s. We have triangulated this burst to two preliminary, 3 sigma error boxes whose areas are ~65 sq. arcmin. each, and whose coordinates are:

      RA(2000)                 DEC(2000)
    4 h 44 m 52.18 s     35 o 26 '   0.98 "  (CENTER)
    4 h 43 m 20.48 s     35 o  1 '  20.71 "  (CORNER)
    4 h 45 m  0.15 s     35 o 26 '  28.23 "  (CORNER)
    4 h 44 m 44.21 s     35 o 25 '  33.76 "  (CORNER)
    4 h 46 m 27.00 s     35 o 51 '  11.65 "  (CORNER)
  
                OR  
  
      RA(2000)                 DEC(2000)
    8 h 25 m 45.53 s     60 o  3 '  46.10 "  (CENTER)
    8 h 29 m 50.81 s     60 o  8 '  47.57 "  (CORNER)
    8 h 25 m 36.30 s     60 o  2 '  32.33 "  (CORNER)
    8 h 25 m 54.77 s     60 o  4 '  59.81 "  (CORNER)
    8 h 21 m 35.82 s     59 o 58 '   8.41 "  (CORNER)
  

  These error boxes may be improved; in particular, it may be possible to determine which is the correct box within a few hours.
• GCN notice #760
  S. Golenetskii and E. Mazets, on behalf of the Konus-Wind GRB team, T. Cline, on behalf of the Konus-Wind and NEAR GRB teams, and K. Hurley, on behalf of the Ulysses GRB team, report:
  An analysis of the Konus data indicates that the second error box for this burst (GCN 759) is the correct one, i.e.:

      RA(2000)                 DEC(2000)
    8 h 25 m 45.53 s     60 o  3 '  46.10 "  (CENTER)
    8 h 29 m 50.81 s     60 o  8 '  47.57 "  (CORNER)
    8 h 25 m 36.30 s     60 o  2 '  32.33 "  (CORNER)
    8 h 25 m 54.77 s     60 o  4 '  59.81 "  (CORNER)
    8 h 21 m 35.82 s     59 o 58 '   8.41 "  (CORNER)
  

  A network problem at GSFC has been delaying the receipt of the full Konus data set for several days, which explains why this ambiguity could not be resolved earlier.