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

The gamma-ray burst variability-peak luminosity correlation: new results

GUIDORZI, Cristiano;FRONTERA, Filippo;MONTANARI, Enrico;
2005

Abstract

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
2005
Guidorzi, Cristiano; Frontera, Filippo; Montanari, Enrico; Rossi, F; Amati, L; Gomboc, A; Hurley, K; Mundell, C. G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1202288
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