# 2003A&A...398..919B

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 Query : 2003A&A...398..919B

2003A&A...398..919B - Astronomy and Astrophysics, volume 398, 919-925 (2003/2-2)

Gamma photometric redshifts for long gamma-ray bursts.

BAGOLY Z., CSABAI I., MESZAROS A., MESZAROS P., HORVATH I., BALAZS L.G. and VAVREK R.

Abstract (from CDS):

It is known that the soft tail of the gamma-ray bursts' spectra show excesses from the exact power-law dependence. In this article we show that this departure can be detected in the peak flux ratios of different BATSE DISCSC energy channels. This effect allows to estimate the redshift of the bright long gamma-ray bursts in the BATSE Catalog. A verification of these redshifts is obtained for the 8 GRB which have both BATSE DISCSC data and measured optical spectroscopic redshifts. There is good correlation between the measured and estimated redshifts, and the average error is Δz≃0.33. The method is similar to the photometric redshift estimation of galaxies in the optical range, hence it can be called as gamma photometric redshift estimation''. The estimated redshifts for the long bright gamma-ray bursts are up to z≃4. For the the faint long bursts - which should be up to z≃20 - the redshifts cannot be determined unambiguously with this method.

Journal keyword(s): cosmology: large-scale structure of Universe - gamma-rays: bursts

Full paper

 Number of rows : 9
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 GRB 991216 gB 05 09 31.2983 +11 17 07.262           ~ 414 0
2 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 855 1
3 GRB 980329 gB 07 02 41 +38 50.7           ~ 267 1
4 GRB 971214 gB 11 56 26.4 +65 12 01           ~ 437 1
5 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 477 1
6 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 973 1
7 GRB 970828 gB 18 08 31.6 +59 18 51           ~ 341 1
8 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1737 2
9 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 432 1

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2022.08.09-01:12:29