Gamma-ray Burst 000323

On March 23, 2000 a GRB was detected by Ulysses, BATSE (#8049) and NEAR.

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN notice #616
  K. Hurley, R. M. Kippen, S. Barthelmy, and T. Cline, on behalf of the Ulysses, BATSE, and NEAR GRB teams, report:
  Ulysses, BATSE, and NEAR observed GRB000323 (BATSE #8049). As observed by Ulysses, this burst had a T90 duration of about 90 s and a 25-100 keV fluence of about 4.3 x 10^-6 erg/cm^2. We have triangulated this burst to a preliminary ~750 sq. arcmin. error box whose coordinates are:

      RA(2000)                 DEC(2000)
   12 h 51 m 59.81 s     48 o 49 '   6.46 "  (CENTER)
   12 h 52 m 48.03 s     48 o 26 '  56.20 "  (CORNER)
   12 h 50 m 24.05 s     48 o 46 '  14.07 "  (CORNER)
   12 h 53 m 35.73 s     48 o 51 '  54.67 "  (CORNER)
   12 h 51 m 10.65 s     49 o 11 '  19.28 "  (CORNER)
  

  Only minor refinements to this error box are expected.
• GCN notice #621
  A. Henden (USRA/USNO) on behalf of the USNO GRB team, and A. J. Castro-Tirado, INTA-LAEFF (Madrid) and IAA-CSIC (Granada) and J. M. Castro Ceron, ROA (San Fernando) on behalf of the large Spanish-Czech BOOTES team, report:
  We have observed the entire error box of GRB 000323 (cf. Hurley et al., GCN#616), using the 0.3-m BOOTES-1 telescope and the USNOFS 1.0-m telescope. The BOOTES-1 data is unfiltered, and covers about 90 percent of the entire error box except for the extreme northern and southern corners. The USNO Cousins R-band data is a north/south mosaic that covers about 60 percent of the error box, missing the east and west corners. The UT exposure dates, length, and limiting magnitudes are:

  BOOTES-1  2000 March 25.00  1200seconds  R=19.5
  USNO      2000 March 25.42   600seconds  R=21.5
  USNO      2000 March 26.31  1200seconds  R=22.2
  

  The BOOTES-1 frame does not go as deep as the POSS-II red plate, but no new object is apparent from comparing the CCD data with POSS-II. The USNO datasets go somewhat deeper than POSS-II, but no variable object is detected brighter than R=21.5.
  A BVRI single-night calibration of the central part of the error box, taken on a photometric night in conjunction with a large number of Landolt standards, can be found at ftp://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb000323.dat