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Gamma-ray bursts from stellar mass accretion disks around black holes
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Gamma‑ray bursts may originate from accreting black holes formed in neutron‑star mergers or the collapse of rotating Wolf‑Rayet stars, with radiation produced by a broadly beamed pair fireball along the rotation axis. In this model the accretion disk is geometrically thick, contains tenths of a solar mass within 100 km, and feeds a neutrino‑rich inner region that, over a viscous timescale of seconds, produces a pair fireball via neutrino annihilation and scattering, releasing ~10^50 erg s⁻¹. Published in The Astrophysical Journal, March 1993 (DOI 10.1086/172359).
view Abstract Citations (2128) References (35) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Gamma-Ray Bursts from Stellar Mass Accretion Disks around Black Holes Woosley, S. E. Abstract A cosmological model for gamma-ray bursts is explored in which the radiation is produced as a broadly beamed pair fireball along the rotation axis of an accreting black hole. The black hole may be a consequence of neutron star merger or neutron star-black hole merger, but for long complex bursts, it is more likely to come from the collapse of a single Wolf-Rayet star endowed with rotation ('failed' Type Ib supernova). The disk is geometrically thick and typically has a mass inside 100 km of several tenths of a solar mass. In the failed supernova case, the disk is fed for a longer period of time by the collapsing star. At its inner edge the disk is thick to its own neutrino emission and evolves on a viscous time scale of several seconds. In a region roughly 30 km across, interior to the accretion disk and along its axis of rotation, a pair fireball is generated by neutrino annihilation and electron-neutrino scattering which deposit approximately 10 exp 50 ergs/s. Publication: The Astrophysical Journal Pub Date: March 1993 DOI: 10.1086/172359 Bibcode: 1993ApJ...405..273W Keywords: Accretion Disks; Black Holes (Astronomy); Gamma Ray Bursts; Stellar Evolution; Stellar Mass Accretion; Stellar Physics; Astronomical Models; Supernovae; Wolf-Rayet Stars; Space Radiation; ACCRETION; ACCRETION DISKS; BLACK HOLE PHYSICS; GAMMA RAYS: BURSTS; STARS: EVOLUTION; STARS: SUPERNOVAE: GENERAL full text sources ADS |