GCN Circular 4704
Subject
GRB 060204b: pseudo-z from spectral parameters of the prompt emission
Date
2006-02-07T14:21:22Z (19 years ago)
From
Jean-Luc Atteia at Lab d Astrophys.,OMP,Toulouse <atteia@ast.obs-mip.fr>
A. Pelangeon & J-L. Atteia (LATT-OMP) report:
We have used the spectral parameters for the most intense part of GRB
060204B (from T0-4.46 sec. to T0+10.54 sec.) kindly provided by T. Sakamoto
(GSFC, private communication) to compute the spectral pseudo-redshift of
this burst detected by SWIFT-BAT (Falcone et al., GCN 4655; Markwardt et
al., GCN 4671).
We find a pseudo-redshift pz= 3.1 � 1.1
This is consistent with the observations of the afterglow by Fynbo et al.
(GCN 4677) who imposes a conservative maximum redshift of z ~< 4.