Cosmological Brightness Distribution Fits of Gamma Ray Burst Sources

Abstract

We discuss detailed fits of the BATSE and PVO gamma-ray burst peak-flux distributions with Friedman models taking into account possible density evolution and standard candle or power law luminosity functions. A chi-square analysis is used to estimate the goodness of the fits and we derive the significance level of limits on the density evolution and luminosity function parameters. Cosmological models provide a good fit over a range of parameter space which is physically reasonable.

Ap.J. in press, uuencoded .ps file, 9 pages manuscript plus 5 figures

Cited by in corpus (16)

• Gamma-Ray Bursts and the Fireball Model
• A 3rd Class of Gamma Ray Bursts?
• An analysis of the durations of Swift Gamma-Ray Bursts
• 'On the difference between the short and long gamma-ray bursts'
• Gamma-Ray Bursts and the Cosmic Star Formation Rate
• The Swift satellite and redshifts of long gamma-ray bursts
• Search for Non-Triggered Gamma Ray Bursts in the BATSE Continuous Records: Preliminary Results
• Testing the anisotropy in the angular distribution of $Fermi$/GBM gamma-ray bursts
• Gamma photometric redshifts for long gamma-ray bursts
• Redshift distribution of gamma-ray bursts and star formation rate
• Cosmological effects on the observed flux and fluence distributions of gamma-ray bursts: Are the most distant bursts in general the faintest ones?
• An Oppositeness in the Cosmology: Distribution of the Gamma-Ray Bursts and the Cosmological Principle
• Gamma Ray Burst Host Galaxies Have `Normal' Luminosities
• Severe New Limits on the Host Galaxies of Gamma Ray Bursts
• Survival analysis of the optical brightness of GRB host galaxies
• The Beginning of Gamma Astronomy