The angular correlation function of gamma-ray bursts

1994 ◽  
Author(s):  
G. R. Blumenthal ◽  
D. H. Hartmann ◽  
E. V. Linder
Keyword(s):  
Correlation Function ◽  
Angular Correlation ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Angular Correlation Function

scholarly journals Revisiting the statistical isotropy of GRB sky distribution

2019 ◽  
Vol 490 (4) ◽  
pp. 4481-4488 ◽  
Author(s):  
Uendert Andrade ◽  
Carlos A P Bengaly ◽  
Jailson S Alcaniz ◽  
Salvatore Capozziello
Keyword(s):  
Correlation Function ◽  
Angular Correlation ◽  
Large Scale ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Significant Evidence ◽  
Standard Cosmology ◽  
Angular Correlation Function ◽  
Statistical Isotropy

ABSTRACT The assumption of homogeneity and isotropy on large scales is one of the main hypotheses of the standard cosmology. In this paper, we test the hypothesis of isotropy from the two-point angular correlation function of 2626 gamma-ray bursts (GRB) of the FERMI GRB catalogue. We show that the uncertainties in the GRB positions induce spurious anisotropic signals in their sky distribution. However, when such uncertainties are taken into account no significant evidence against the large-scale statistical isotropy is found. This result remains valid even for the sky distribution of short-lived GRB, contrarily to previous reports.

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