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Neutron star binaries and long-duration gamma-ray bursts

Levan, Andrew J. ; Davies, Melvyn B LU and King, Andrew R. (2006) In Monthly Notices of the Royal Astronomical Society 372(3). p.1351-1356
Abstract
Cosmological long-duration gamma-ray bursts (LGRBs) are thought to originate from the core collapse to black holes (BHs) of stripped massive stars. Those with sufficient rotation form a centrifugally supported torus whose collapse powers the GRB. We investigate the role of tidal locking within a tight binary as a source of the necessary angular momentum. We find that the binary orbit must be no wider than a few solar radii for a torus to form upon core collapse. Comparing this criterion to the observed population of binaries containing two compact objects suggests that rotation may have been important in the formation of up to 50 per cent of the observed systems. As these systems created a neutron star and not a BH, they presumably did not... (More)
Cosmological long-duration gamma-ray bursts (LGRBs) are thought to originate from the core collapse to black holes (BHs) of stripped massive stars. Those with sufficient rotation form a centrifugally supported torus whose collapse powers the GRB. We investigate the role of tidal locking within a tight binary as a source of the necessary angular momentum. We find that the binary orbit must be no wider than a few solar radii for a torus to form upon core collapse. Comparing this criterion to the observed population of binaries containing two compact objects suggests that rotation may have been important in the formation of up to 50 per cent of the observed systems. As these systems created a neutron star and not a BH, they presumably did not produce highly luminous GRBs. We suggest instead that they make the subset of GRBs in the relatively local universe which have much lower luminosity. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
gamma-rays : bursts
in
Monthly Notices of the Royal Astronomical Society
volume
372
issue
3
pages
1351 - 1356
publisher
Oxford University Press
external identifiers
  • wos:000241389400034
  • scopus:33750147742
ISSN
1365-2966
DOI
10.1111/j.1365-2966.2006.10942.x
language
English
LU publication?
yes
id
bc35664f-57f4-4ab2-933e-e0f594330d93 (old id 386656)
date added to LUP
2016-04-01 12:14:28
date last changed
2020-11-29 03:09:31
@article{bc35664f-57f4-4ab2-933e-e0f594330d93,
  abstract     = {Cosmological long-duration gamma-ray bursts (LGRBs) are thought to originate from the core collapse to black holes (BHs) of stripped massive stars. Those with sufficient rotation form a centrifugally supported torus whose collapse powers the GRB. We investigate the role of tidal locking within a tight binary as a source of the necessary angular momentum. We find that the binary orbit must be no wider than a few solar radii for a torus to form upon core collapse. Comparing this criterion to the observed population of binaries containing two compact objects suggests that rotation may have been important in the formation of up to 50 per cent of the observed systems. As these systems created a neutron star and not a BH, they presumably did not produce highly luminous GRBs. We suggest instead that they make the subset of GRBs in the relatively local universe which have much lower luminosity.},
  author       = {Levan, Andrew J. and Davies, Melvyn B and King, Andrew R.},
  issn         = {1365-2966},
  language     = {eng},
  number       = {3},
  pages        = {1351--1356},
  publisher    = {Oxford University Press},
  series       = {Monthly Notices of the Royal Astronomical Society},
  title        = {Neutron star binaries and long-duration gamma-ray bursts},
  url          = {http://dx.doi.org/10.1111/j.1365-2966.2006.10942.x},
  doi          = {10.1111/j.1365-2966.2006.10942.x},
  volume       = {372},
  year         = {2006},
}