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Gamma -ray bursts and cosmology

Author: YangChaoXiong
Tutor: WuLin
School: Yunnan Normal University
Course: Astrophysics
Keywords: γ storm Cosmology Redshift Afterglow decay index Correlation
CLC: P172.3
Type: Master's thesis
Year: 2009
Downloads: 51
Quote: 0
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Abstract


GRBs (Gamma Ray Bursts) short GRBs (GRBs), is today the most important areas of astrophysics and one of the hottest areas of research . In the past ten years, GRB research has made tremendous progress : where long bursts ( continuous time scale greater than 2 seconds of violence ) is believed to have originated in the collapse of a massive star 's death , more and more observational evidence show that the long GRBs marked with star-forming regions , perhaps even into the agreement with the supernova ; 2005 standard since short GRBs ( continuous time scale shorter than 2 seconds ) the mystery began to be solved, short bursts of double neutron stars merge model has also been supported by observation . Recently , Swift satellite also observed several redshift higher than 6.0 GRBs (GRB 050904 redshift 6.29; GRB 060116 redshift 6.6; GRB 080913 redshift 6.7 ) , which marks the beginning become a research GRBs high redshift cosmological probes. In this paper, the author collected 69 with redshift , afterglow decay index and the peak energy of the gamma-ray bursts , based on the study γ redshift bursts with energy , with redshift afterglow decay index correlation.

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CLC: > Astronomy,Earth Sciences > Astronomy > Space astronomy > Space Astrophysics > gamma -ray astronomy
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