[vsnet-grb-info 4584] GRB 070420: pseudo-z~1.56 from spectral parameters of the prompt

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6345
SUBJECT: GRB 070420: pseudo-z~1.56 from spectral parameters of the prompt
DATE:    07/04/23 16:01:10 GMT
FROM:    Alexandre Pelangeon at LATT,OMP,Toulouse  <alexandre.pelangeon at ast.obs-mip.fr>

A. Pelangeon & J-L. Atteia (LATT-OMP) report:

We have used the spectral parameters of the most intense
part of GRB 070420 provided by Golenetskii et al. (GCNC 6344)
to compute the spectral pseudo-redshift** of this burst
detected by SWIFT-BAT (Stamatikos et al., GCNC 6330).

We find a pseudo-redshift pz= 1.56 +/- 0.35


** cf. http://www.ast.obs-mip.fr/grb/pz