GCN Circular 1466
Subject
GRB 020714, optical observations
Date
2002-08-10T18:45:03Z (22 years ago)
Edited On
2024-11-18T09:53:36Z (2 months ago)
From
Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.es>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>
J. Gorosabel (IAA-CSIC), J.M. Castro Cerón (ROA),
A.J. Castro Tirado (IAA-CSIC), A. Guijarro (CAHA),
F. Hoyo (CAHA), S. Pedraz (CAHA) and C. Wolf (Oxford Univ.),
report:
We have carried out Ic-band observations of the central
part of the GRB 020714 (GCN 1457) error box with the 2.2m
Telescope of Calar Alto (+BUSCA) as follows:
==============================================================
Date Seeing Exp.Time Lim.Mag. Time Since Coverage
(2002 UT) (") (s) (3 sigma) GRB (days) (%)
--------------------------------------------------------------
18.020-18.105/07 1.3 7x900 24.4 3.4 60
19.021-19.094/07 1.1 6x900 24.5 4.4 60
06.036-06.110/08 1.8 6x900 24.1 22.4 55
--------------------------------------------------------------
Marginal variability (< 0.25 mag) is detected for 5 objects.
None of these sources shows flux variability consistent with
a decay as expected for an optical afterglow 3.4-22.4 days
after the GRB.