Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 2314

XRF 030723, optical observations
2003-07-23T23:55:59Z (21 years ago)
Alberto Castro-Tirado at LAEFF-INTA <>
XRF 030723, optical observations
A. de Ugarte (IAA-CSIC, Granada), P. Tristram (Univ. of
Auckland), T. Sekiguchi (Univ. of Nagoya), M. Jelinek
(ASU-CAS, Obs. Ondrejov), J. Gorosabel (IAA-CSIC and
STScI, Baltimore), S. Guziy (IAA-CSIC), J. M. Castro
Cer�n (STScI), P. Kilmartin (Mt. John Obs.), Ph. Yock
(Univ. of Auckland) and A. J. Castro-Tirado (IAA-CSIC)
"Following the detection of the X-ray flash 030723 by
HETE-2, we have imaged the entire error box with the
0.6-m telescope (+MOA camera) at Mt. John Observatory
in wide R- and B-band filters (3 x 300-s each) starting
on July 23.59 UT (i.e. 7.6 hr after the event).
Comparison of a single R-band frame with the DSS-2 (R-
-band) reveals no optical transient down to the DSS-2
limiting magnitude."
Looking for U.S. government information and services? Visit