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Title: THE ORTHOGONAL GAMMA-RAY BURST MODEL

We explore the analogy between a rotating magnetized black hole and an axisymmetric pulsar and derive the black hole's electromagnetic spindown after its formation in the core collapse of a supermassive star. The spindown shows two characteristic phases: an early Blandford-Znajek phase that lasts a few hundred seconds and a late pulsar-like afterglow phase that lasts much longer. During the first phase, the spindown luminosity decreases almost exponentially, whereas during the afterglow phase it decreases as t {sup –a} with 1 ≲ a ≲ 1.5. We associate our findings with long duration gamma-ray bursts and compare them with observations.
Authors:
;  [1] ;  [2]
  1. Research Center for Astronomy, Academy of Athens, Athens 11527 (Greece)
  2. Also at Department of Physics, University of Athens, Athens 15783, Greece. (Greece)
Publication Date:
OSTI Identifier:
22364072
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 780; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AFTERGLOW; ASTROPHYSICS; AXIAL SYMMETRY; BLACK HOLES; COMPARATIVE EVALUATIONS; COSMIC GAMMA BURSTS; GRAVITATIONAL COLLAPSE; LUMINOSITY; MAGNETIC FIELDS; PULSARS; SUPERMASSIVE STARS