Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New! Circulars over Kafka, Heartbeat Topic, and Schema v4.1.0. See news and announcements

GCN Circular 1154

Subject
GRB011121: continued decay
Date
2001-11-23T07:33:52Z (23 years ago)
From
Krzysztof Z. Stanek at CfA <kstanek@cfa.harvard.edu>
L. Wyrzykowski (Warsaw University Observatory) and K. Z. Stanek
(Harvard-Smithsonian CfA) report:


Additional R-band observations of the GRB011121 OT carried out with
the OGLE 1.3m telescope indicate continuing fading behavior of the
afterglow (GCNs 1151, 1152):

HJD-2450000         UT           R_c       exp
2236.71036    011123 05:06   20.35+-0.07  3x600 sec

This measurement might be somewhat contaminated by the possible host
galaxy.  Combined with the last night data, this is consistent with a
power-law decay with an index of -1.55, similar to -1.65 obtained from
first night data alone (GCN 1152).  The R-band magnitudes are relative
to star "A" of Wyrzykowski et al. (see finding chart at
http://cfa-www.harvard.edu/cfa/oir/Research/GRB/).


This message can be cited.
Looking for U.S. government information and services? Visit USA.gov