GCN Circular 6033
Subject
GRB 070125: pseudo-z~1.5 from spectral parameters of the prompt emission
Date
2007-01-26T10:02:22Z (17 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 of GRB 070125
provided by Bellm et al. (GCNC 6025) to compute the spectral
pseudo-redshift**
of this burst detected by the IPN Network and SWIFT-BAT (Hurley et al.,
GCNC 6024).
We find a pseudo-redshift pz= 1.6 � 0.8
This pseudo-redshift relies on the assumption that GRB 070125
follows the Amati relation.
If we combine the constraints obtained from the pseudo-z computation
with the spectroscopic constraints given by Prochaska et al.
(GCNC 6031 & 6032), we suggest that the redshift of GRB 070125
is close to z=1.5.
** cf. http://www.ast.obs-mip.fr/grb/pz