GRB 000623
GCN Circular 730
Subject
GRB000623
Date
2000-06-24T20:26:17Z (25 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
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 59762 s UT.
As observed by Ulysses, it had a duration ~5 s, a 25-100 keV
fluence of ~5x10^-6 erg/cm^2, and a peak flux over 0.5 s of
~6x10^-7 erg/cm^2 s. We have localized it to an ~130 sq.
arcmin. error box whose preliminary, 3 sigma coordinates are:
RA(2000) DEC(2000)
11 h 15 m 41.48 s 10 o 42 ' 2.50 " (CENTER)
11 h 15 m 56.55 s 10 o 41 ' 53.52 " (CORNER)
11 h 14 m 17.45 s 11 o 0 ' 30.38 " (CORNER)
11 h 17 m 4.21 s 10 o 23 ' 34.43 " (CORNER)
11 h 15 m 26.41 s 10 o 42 ' 11.33 " (CORNER)
This localization can be improved.
GCN Circular 735
Subject
GRB 000623, optical observations
Date
2000-06-30T16:15:09Z (25 years ago)
From
Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.es>
J. Gorosabel (DSRI, Copenhagen),
S. Pascual, J. Gallego, J. Zamorano (UCM, Madrid),
A.J. Castro-Tirado (LAEFF-INTA, Madrid, and IAA-CSIC, Granada),
J.M. Castro Ceron (ROA, San Fernando),
S. Klose (Thueringer Landessternwarte, Tautenburg),
J. Greiner (AIP, Potsdam),
report on behalf of a larger European collaboration:
"R-band images covering 90% of the GRB 000623 error box
(GCN #730) were acquired with the 2.2-m CAHA telescope,
as follows:
Date(UT) T-T0(hr) Exp.(s) Seeing(") Lim. Mag.
------------------------------------------------------------
24.900 -- 24.908 29.1 120 1.2" 20
27.860 -- 27.876 100.2 240 2.0" 20
------------------------------------------------------------
Comparison between these two epoch observations did not reveal
any object brighter than R ~ 19.7 showing a variation larger
than 0.3 mag."
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