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The Rates of Hypernovae and Gamma-Ray Bursts: Implications for Their Progenitors

2004/03/17 by Ph. Podsiadlowski, P. A. Mazzali, K. Nomoto +2 · 2 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Gamma-ray bursts and supernovae #Pulsars and Gravitational Waves Research #astro-ph

paper · pdf · doi:10.1086/421347

published as Astrophys.J.607:L17-L20,2004 · Accepted by Astrophysical Journal Letters. 12 pages

arxiv created 2004/03/17 · openalex publication_date 2004/04/23 · arxiv updated 2011/06/21 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

A critical comparison of estimates for the rates of hypernovae (HNe) and gamma-ray bursts (GRBs) is presented. Within the substantial uncertainties, the estimates are shown to be quite comparable and give a galactic rate of 10 -6 to 10 -5 yr -1 for both events. These rates are several orders of magnitude lower than the rate of core-collapse supernovae, suggesting that the evolution leading to an HN/GRB requires special circumstances, very likely due to binary interactions. Various possible binary channels are discussed, and it is shown that these are generally compatible with the inferred rates.

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