Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..836..177n&link_type=abstract
GAMMA-RAY BURSTS IN THE SWIFT ERA: Sixteenth Maryland Astrophysics Conference. AIP Conference Proceedings, Volume 836, pp. 177-
Astronomy and Astrophysics
Astrophysics
Gamma-Ray Sources, Gamma-Ray Bursts
Scientific paper
It is claimed by many authors that there are tight correlations between the spectral peak energy Ep, and the ``brightness'' such as isotropic energy Erad, collimation-corrected energy Eγ, or peak luminosity Lp. In many long GRBs, their light curves consist of several pulses or humps, and each pulse has a different spectrum. Using data of multi pulsed GRBs observed by HETE-2, we investigated these relations for each pulse and found it looked to have some correlations. This may imply that each pulse could behave as a single burst. Considering that the GRB rate follow the star formation rate of the Universe, we should have already detected a number of distant GRBs. Some methods are proposed to estimate a redshift by applying the above mentioned correlations. Extending the previous studies, we apply the redshift estimations using Ep-Erad correlation for an individual pulse.
Atteia Jean-Luc
Fenimore Edward E.
Galassi Mark
Ishikawa Naoto
Kawai Nobuyuki
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