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Properties of long gamma-ray bursts from massive compact binaries.

Church, Ross LU orcid ; Levan, Andrew J ; Davies, Melvyn B LU and Kim, Chunglee LU (2013) In Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Science 371(1992).
Abstract
We consider the implications of a model for long-duration gamma-ray bursts in which the progenitor is spun up in a close binary by tidal interactions with a massive black-hole companion. We investigate a sample of such binaries produced by a binary population synthesis, and show that the model predicts several common features in the accretion on to the newly formed black hole. In all cases, the accretion rate declines as approximately t(-5/3) until a break at a time of order 10(4) s. The accretion rate declines steeply thereafter. Subsequently, there is flaring activity, with the flare peaking between 10(4) and 10(5) s, the peak time being correlated with the flare energy. We show that these times are set by the semi-major axis of the... (More)
We consider the implications of a model for long-duration gamma-ray bursts in which the progenitor is spun up in a close binary by tidal interactions with a massive black-hole companion. We investigate a sample of such binaries produced by a binary population synthesis, and show that the model predicts several common features in the accretion on to the newly formed black hole. In all cases, the accretion rate declines as approximately t(-5/3) until a break at a time of order 10(4) s. The accretion rate declines steeply thereafter. Subsequently, there is flaring activity, with the flare peaking between 10(4) and 10(5) s, the peak time being correlated with the flare energy. We show that these times are set by the semi-major axis of the binary, and hence the process of tidal spin-up; furthermore, they are consistent with flares seen in the X-ray light curves of some long gamma-ray bursts. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Science
volume
371
issue
1992
article number
20120230
publisher
Royal Society Publishing
external identifiers
  • wos:000318162100001
  • pmid:23630369
  • scopus:84877663208
ISSN
1364-503X
DOI
10.1098/rsta.2012.0230
language
English
LU publication?
yes
id
33001038-37af-4637-8bb1-8d5c5ce55468 (old id 3805181)
date added to LUP
2016-04-01 14:35:49
date last changed
2025-04-04 15:18:10
@article{33001038-37af-4637-8bb1-8d5c5ce55468,
  abstract     = {{We consider the implications of a model for long-duration gamma-ray bursts in which the progenitor is spun up in a close binary by tidal interactions with a massive black-hole companion. We investigate a sample of such binaries produced by a binary population synthesis, and show that the model predicts several common features in the accretion on to the newly formed black hole. In all cases, the accretion rate declines as approximately t(-5/3) until a break at a time of order 10(4) s. The accretion rate declines steeply thereafter. Subsequently, there is flaring activity, with the flare peaking between 10(4) and 10(5) s, the peak time being correlated with the flare energy. We show that these times are set by the semi-major axis of the binary, and hence the process of tidal spin-up; furthermore, they are consistent with flares seen in the X-ray light curves of some long gamma-ray bursts.}},
  author       = {{Church, Ross and Levan, Andrew J and Davies, Melvyn B and Kim, Chunglee}},
  issn         = {{1364-503X}},
  language     = {{eng}},
  number       = {{1992}},
  publisher    = {{Royal Society Publishing}},
  series       = {{Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Science}},
  title        = {{Properties of long gamma-ray bursts from massive compact binaries.}},
  url          = {{http://dx.doi.org/10.1098/rsta.2012.0230}},
  doi          = {{10.1098/rsta.2012.0230}},
  volume       = {{371}},
  year         = {{2013}},
}