Can the Cosmological Dilation Explain the Skewness in the Gamma-Ray Burst Duration Distribution?
Abstract
In order to explain the origin of skewness in the gamma-ray burst (GRB) duration distribution, a statistical model, based on the cosmological time dilation and taking into account the GRB formation rate and instrumental effects, is examined. It is concluded that the considered effects are able to account for only a small fraction of the observed skewness. Therefore, its origin needs to be searched for in the processes governing the progenitors of GRBs.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 2020
- DOI:
- 10.3847/1538-4357/ab8eb1
- arXiv:
- arXiv:2004.13623
- Bibcode:
- 2020ApJ...897...77T
- Keywords:
-
- Gamma-ray bursts;
- Cosmology;
- Astronomy data analysis;
- Astrostatistics;
- 1882;
- 1858;
- 629;
- 343;
- Astrophysics - High Energy Astrophysical Phenomena;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- High Energy Physics - Phenomenology
- E-Print:
- 9 pages, 2 figures, 1 table. Accepted in ApJ