2005/07/25 by C. Guidorzi, F. Frontera, E. Montanari +7 · 4 citations
Physics and Astronomy · #Astro and Planetary Science #Astronomy #Astrophysics #Correlation #Galaxy #Gamma-ray burst #Gamma-ray bursts and supernovae #Isotropy #Luminosity #Optics #Physics #Power law #Redshift #Statistics #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2005.09450.x
published as Mon.Not.Roy.Astron.Soc. 363 (2005) 315-325 · 11 pages, 10 figures, MNRAS, accepted
arxiv created 2005/07/25 · openalex publication_date 2005/09/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report test results of the correlation between the time variability and the peak luminosity of gamma-ray bursts (GRBs), using a larger sample (32) of GRBs with known redshift than that available to Reichart et al., and using as a variability measure that introduced by these authors. The results are puzzling. Assuming an isotropic-equivalent peak luminosity, as had Reichart et al., a correlation is still found, but it is less relevant and inconsistent with a power law as previously reported. Assuming as the peak luminosity that corrected for GRB beaming for a subset of 16 GRBs with known beaming angle, the correlation becomes slightly less significant.