[vsnet-grb-info 6127] GRB 080514B: pseudo-z= 1.8 from prompt emission spectrum

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  7760
SUBJECT: GRB 080514B: pseudo-z= 1.8 from prompt emission spectrum
DATE:    08/05/21 15:09:41 GMT
FROM:    Alexandre Pelangeon at LATT,OMP,Toulouse  <alexandre.pelangeon at ast.obs-mip.fr>

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

We used the spectral parameters of GRB 080514B
provided by Golenetskii et al. (GCNC 7751) to compute
the spectral pseudo-redshift(**) of this burst localized
by SuperAGILE/IPN (Rapisarda et al., GCN 7715).

We find a pseudo-redshift pz= 1.76 ± 0.30

We note that this redshift estimate is consistent with
the observations of the afterglow in B band performed
with the NOT, that may imply a redshift z < 3.7
(Malesani et al., GCNC 7734). This is also consistent
with the observations of the Swift/UVOT (Holland et al.,
GCNC 7759), in which the non-detection of the afterglow
in uvw2 filters may suggest z >~ 1.9

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