The truncated lognormal distribution as a luminosity function for SWIFT-BAT gamma-ray bursts

Abstract

The determination of the luminosity function (LF) in gamma ray bursts (GRBs) depends on the adopted cosmology, each one characterized by its corresponding luminosity distance. Here we analyse three cosmologies: the standard cosmology, the plasma cosmology, and the pseudo-Euclidean universe. The LF of the GRBs is firstly modeled by the lognormal distribution and the four broken power law, and secondly by a truncated lognormal distribution. The truncated lognormal distribution fits acceptably the range in luminosity of GRBs as a function of the redshift.

20 pages and 15 figures

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Cited by in corpus (3)

• New probability distributions in astrophysics: I. The truncated generalized gamma
• A lognormal luminosity function for SWIRE in flat cosmology
• Classical and relativistic models for time duration of gamma-ray bursts