[AAVSO-HEN] GRB 080514B : redshift estimation

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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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