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http://hdl.handle.net/2289/4891
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DC Field | Value | Language |
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dc.contributor.author | Sethi, S.K. | - |
dc.contributor.author | Bhargavi, S.G. | - |
dc.date.accessioned | 2012-07-14T06:22:11Z | - |
dc.date.available | 2012-07-14T06:22:11Z | - |
dc.date.issued | 2001-09 | - |
dc.identifier.citation | Astronomy and Astrophysics, 2001, Vol.376, p10-16 | en |
dc.identifier.issn | 0004-6361 | - |
dc.identifier.issn | 1432-0746 (Online) | - |
dc.identifier.uri | http://hdl.handle.net/2289/4891 | - |
dc.description | Open Access | en |
dc.description.abstract | We attempt to constrain the luminosity function of Gamma Ray Bursts (GRBs) from the observed number count-flux relation and the afterglow redshift data. We assume three classes of luminosity functions for our analysis: (a) Log-normal distribution, (b) Schechter distribution, and (c) Scale-free distribution. We assume several models of the evolution of the GRB population for each luminosity function. Our analysis shows that: (a) log-normal is the only luminosity function that is compatible with both the observations. This result is independent of the GRB evolution model, (b) for log-normal function, the average photon luminosity L0 and the width of the luminosity function sigma that are compatible with both the observations fall in the range: 1055 s-1 <~ L0 <~ 1056 s-1 and 2 <~ sigma <~ 3, (c) the agreement of observations with other luminosity functions requires the GRB population to evolve more strongly than the evolution of the star-formation rate of the universe. | en |
dc.language.iso | en | en |
dc.publisher | EDP Sciences | en |
dc.relation.uri | http://adsabs.harvard.edu/abs/2001A%26A...376...10S | en |
dc.relation.uri | http://arxiv.org/abs/astro-ph/0108190 | en |
dc.relation.uri | http://dx.doi.org/10.1051/0004-6361:20010932 | en |
dc.rights | 2001 EDP Sciences | en |
dc.subject | gamma rays | en |
dc.subject | bursts cosmology | en |
dc.subject | observations | en |
dc.title | Luminosity function of GRBs | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (A&A) |
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File | Description | Size | Format | |
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2001_A&A_Vol.376_p10.pdf Restricted Access | Open Access | 174.12 kB | Adobe PDF | View/Open Request a copy |
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