GCN Circular 1327
Subject
GRB 020405, U-band observations
Date
2002-04-06T04:53:03Z (23 years ago)
From
Alberto Castro-Tirado at Inst.de Astro. de Andalucia <ajct@iaa.es>
GRB 020405, U-band observations
---------------------------
A. J. Castro-Tirado, J. Gorosabel (Instituto de Astrof�sica de
Andaluc�a, IAA-CSIC, Granada), T. Augusteijn (Isaac Newton
Group of Telescopes) and Jos� Mar�a Castro Cer�n (ROA,San Fernando)
report:
We have observed the central region of the GRB 020405 error box
(Hurley et al., GCN Circ. 1325) with the Prime Focus Camera at the
4.2-m William HerschelTelescope at the ORM in La Palma, providing
a 16'.2 square field of view. A comparison of the U- and R-band
images obtained on Apr 6.104-6.122 UT reveals an extremely blue
object at the position of the optical candidate proposed by Price et al.
(GCN Circ. 1326) thus supporting the relationship with the GRB.
This U-band detection would imply that the redshift is < 2.1 .
This message can be cited.
[GCN OPS NOTE (20jul02): The affiliation for JMCC was changed
from "IAA-CSIC and ROA, San Fernando" to "ROA, San Fernando".]