2006A&A...453..823G


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.24CET20:16:22

2006A&A...453..823G - Astronomy and Astrophysics, volume 453, 823-828 (2006/7-3)

The BATSE-Swift luminosity and redshift distributions of short-duration GRBs.

GUETTA D. and PIRAN T.

Abstract (from CDS):

We compare the luminosity function and rate inferred from the BATSE peak flux distribution of short hard bursts (SHBs) with the redshift and luminosity distributions of SHBs observed by Swift/HETE II. While the Swift/HETE II SHB sample is incompatible with the SHB population that follows the star formation rate, it is compatible with an SHB rate that reflects a distribution of delay times after the SFR. This would be the case if SHBs were associated with binary neutron star mergers. The available data allows, however, different interpretations. For example, a population whose rate is independent of the redshift fits the data very well. The implied SHB rates that we find range from ∼8 to ∼30h703/Gpc3/yr. This rate, which is comparable to the rate of neutron star mergers estimated from statistics of binary pulsars, is a much higher rate than what was previously estimated. We stress that our analysis, which is based on observed SHBs, is limited to bursts with luminosities above 1049erg/s. Weaker bursts may exist, but if so they are hardly detected by BATSE of Swift, so their rate is very weakly constrained by current observations.

Abstract Copyright:

Journal keyword(s): cosmology: observations - gamma rays: bursts - gravitational waves

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 PSR J0737-3039 Psr 07 37 51.248 -30 39 40.83           ~ 374 1
2 GRB 050813 gB 16 07 57.190 +11 14 57.80           ~ 124 1
3 PSR J1829+2456 Psr 18 29 34.6668 +24 56 18.193           ~ 62 1
4 GRB 051221 gB 21 54 48.626 +16 53 27.16 19.49         ~ 314 1
5 GRB 050709 gB 23 01 26.960 -38 58 39.50           ~ 266 1

    Equat.    Gal    SGal    Ecl

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