[vsnet-grb-info 3167] An interactive program for GRB pseudo-redshift
computations
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Wed Apr 26 01:51:20 JST 2006
TITLE: GCN GRB OBSERVATION REPORT
NUMBER: 5004
SUBJECT: An interactive program for GRB pseudo-redshift computations
DATE: 06/04/25 16:49:13 GMT
FROM: Alexandre Pelangeon at LATT,OMP,Toulouse <apelange at ast.obs-mip.fr>
A. Pelangeon & J-L. Atteia (LATT-OMP) report:
A "Pseudo-redshift Calculator" for *long Gamma-Ray Bursts*
is now available at this address:
http://www.ast.obs-mip.fr/grb/pz
This calculator computes redshift-estimates using the redshift indicator
described in Pelangeon et al. (astro-ph/0601150), which is an improvement
of the first version proposed by Atteia (A&A, 407, L1-L4, 2003).
This version is based on the spectral parameters of the prompt emission
measured during the most intense part of the burst.
In this web site you will find:
- Explanations on the redshift indicator, and directions to follow
in order to compute valuable pseudo-redshifts.
- An interactive program to compute pseudo-redshifts.
This program requires the measure of the GRB spectral parameters,
especially alpha, Epeak and the fluence.
- A catalog of pseudo-redshifts for recent GRBs.
We provide this tool as a service to the community.
Pseudo-redshifts may constitute a useful piece of information to establish
the follow-up strategy of newly detected GRBs with known spectral parameters.
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