A Comparison between Radio Loud and Quiet Gamma-Ray Bursts, and Evidence for a Potential Correlation between Intrinsic Duration and Redshift in the Radio Loud Population
| Autor: | Asaf Pe'er, Andrew S. Fruchter, Maria Giovanna Dainotti, Nicole M. Lloyd-Ronning, B. P. Gompertz |
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| Rok vydání: | 2019 |
| Předmět: |
010504 meteorology & atmospheric sciences
Astrophysics::High Energy Astrophysical Phenomena Population FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics general [gamma-ray burst] 01 natural sciences general [Gamma-ray bursts] 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics education 010303 astronomy & astrophysics 0105 earth and related environmental sciences Physics High Energy Astrophysical Phenomena (astro-ph.HE) education.field_of_study Gamma rays general [stars] Gamma ray Astronomy and Astrophysics Redshift Space and Planetary Science Duration (music) QUIET Astrophysics - High Energy Astrophysical Phenomena Gamma-ray burst National laboratory |
| Zdroj: | The Astrophysical Journal |
| ISSN: | 1538-4357 0004-637X 0034-4885 |
| DOI: | 10.3847/1538-4357/aaf6ac |
| Popis: | We extend our study of energetic radio loud and quiet gamma-ray bursts (GRBs), suggesting these GRBs potentially come from two separate progenitor systems. We expand the sample from our previous paper (Lloyd-Ronning & Fryer, 2017) and find our results are strengthened - radio quiet GRBs have significantly shorter intrinsic prompt duration, and are also less energetic on average. However, the tenuous correlation between isotropic energy and intrinsic duration in the radio dark sample remains tenuous and is slightly weakened by adding more bursts. Interestingly, we find an anti-correlation between the intrinsic duration and redshift in the radio bright sample but not the radio dark sample, further supporting that these two samples may come from separate progenitors. We also find that very high energy (0.1 - 100 GeV) extended emission is only present in the radio loud sample. There is no significant difference between the presence of X-ray/optical plateaus or the average jet opening angles between the two samples. We explore the interpretation of these results in the context of different progenitor models. The data are consistent with the radio loud GRBs coming from a Helium-merger system and the radio quiet GRBs coming from a collapsar system, but may also reflect other dichotomies in the inner engine such as a neutron star versus black hole core. Accepted to ApJ |
| Databáze: | OpenAIRE |
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