[vsnet-grb-info 6096] GRB 080514B : redshift estimation
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Fri May 16 01:25:31 JST 2008
TITLE: GCN CIRCULAR
NUMBER: 7730
SUBJECT: GRB 080514B : redshift estimation
DATE: 08/05/15 16:24:56 GMT
FROM: Bruce Gendre at LAM-OAMP <bruce.gendre at oamp.fr>
B. Gendre (LAM/CNRS/Universite de Provence), A. Galli (IASF-Roma/INAF),
M. Boër (OHP/CNRS) report :
Using the XRT analysis reported by Page et al. (GCN 7723), we
extrapolated an X-ray flux of 4.8 10^-13 cgi 1 day after the burst (2-10
keV). Using the Boer & Gendre relation, we estimate the redshift of GRB
080514B to be either 2.8 or 0.9 if this event is a group I or II
respectively (see Gendre, Galli & Boër, ApJ, in press), with
uncertainties of 30%. Further constraints on the redshift could be set
by B observations of the afterglow candidate reported in de Ugarte
Postigo et al. (GCN 7719).
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