2009/11/05 by Agnieszka Janiuk, A. Janiuk, Ye-Fei Yuan +2 · 25 citations
Physics and Astronomy · #Accretion (finance) #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Black hole (networking) #Gamma-ray burst #Gamma-ray bursts and supernovae #Instability #Neutrino #Rotating black hole #Spin-flip #Stellar black hole #Torus #astro-ph.CO #astro-ph.HE
paper · pdf · doi:10.1051/0004-6361/200912725
published in Astronomy and Astrophysics 509, A55 (EDP Sciences) · 9 pages, 7 figures; Astronomy and Astrophysics, accepted
arxiv created 2009/11/05 · openalex publication_date 2009/11/12 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
<i>Aims. <i/>We report on the third phase of our study of the neutrino-cooled hyperaccreting torus around a black hole that powers the jet in gamma ray bursts. We focus on the influence of the black hole spin on the properties of the torus.<i>Methods. <i/>The structure of a stationary torus around the Kerr black hole is solved numerically. We take into account the detailed treatment of the microphysics in the nuclear equation of state that includes the neutrino trapping effect. <i>Results. <i/>We find that in the case of rapidly rotating black holes, the thermal instability discussed in our previous work is enhanced and is developed for much lower accretion rates. We also find the important role of the energy transfer from the rotating black hole to the torus via the magnetic coupling.