GRB 000323
GCN Circular 616
Subject
GRB000323 [IPN Position]
Date
2000-03-24T23:20:07Z (25 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
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 Circular 621
Subject
GRB 000323, optical observations
Date
2000-03-28T20:39:47Z (25 years ago)
From
Arne A. Henden at USNO/USRA <aah@nofs.navy.mil>
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