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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4891
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dc.contributor.authorSethi, S.K.-
dc.contributor.authorBhargavi, S.G.-
dc.date.accessioned2012-07-14T06:22:11Z-
dc.date.available2012-07-14T06:22:11Z-
dc.date.issued2001-09-
dc.identifier.citationAstronomy and Astrophysics, 2001, Vol.376, p10-16en
dc.identifier.issn0004-6361-
dc.identifier.issn1432-0746 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/4891-
dc.descriptionOpen Accessen
dc.description.abstractWe 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.isoenen
dc.publisherEDP Sciencesen
dc.relation.urihttp://adsabs.harvard.edu/abs/2001A%26A...376...10Sen
dc.relation.urihttp://arxiv.org/abs/astro-ph/0108190en
dc.relation.urihttp://dx.doi.org/10.1051/0004-6361:20010932en
dc.rights2001 EDP Sciencesen
dc.subjectgamma raysen
dc.subjectbursts cosmologyen
dc.subjectobservationsen
dc.titleLuminosity function of GRBsen
dc.typeArticleen
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