[vsnet-grb-info 7753] GRB 090427: pseudo-z= 1.48 from prompt emission spectrum

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  9307
SUBJECT: GRB 090427: pseudo-z= 1.48 from prompt emission spectrum
DATE:    09/04/30 14:38:47 GMT
FROM:    Alexandre Pelangeon at LATT,CNRS,U. Toulouse  <alexandre.pelangeon at gmail.com>

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

We used the spectral parameters of GRB 090427
provided by Golenetskii et al. (GCNC 9296)
to compute the spectral pseudo-redshift(**) of this burst
localized by IPN (Pal'shin et al., GCNC 9277).

We find a pseudo-redshift pz= 1.48 +/- 0.20


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