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A novel mechanism for creating double pulsarsSimulations of encounters between pairs of hard binaries, each containing a neutron star and a main-sequence star, reveal a new formation mechanism for double pulsars in dense cores of globular clusters. In many cases, the two normal stars are disrupted to form a common envelope around the pair of neutron stars, both of which will be spun up to become millisecond pulsars. We predict that a new class of pulsars, double millisecond pulsars, will be discovered in the cores of dense globular clusters. The genesis proceeds through a short-lived double-core common envelope phase, with the envelope ejected in a fast wind. It is possible that the progenitor may also undergo a double X-ray binary phase. Any circular, short-period double pulsar found in the galaxy would necessarily come from disrupted disk clusters, unlike Hulse-Taylor class pulsars or low-mass X-ray binaries which may be ejected from clusters or formed in the galaxy.
Document ID
19930037522
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Sigurdsson, Steinn
(NASA Headquarters Washington, DC United States)
Hernquist, Lars
(California Univ. Santa Cruz, United States)
Date Acquired
August 16, 2013
Publication Date
December 20, 1992
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 401
Issue: 2
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A21519
Funding Number(s)
CONTRACT_GRANT: NAGW-2422
CONTRACT_GRANT: NSF AST-90-18526
Distribution Limits
Public
Copyright
Other

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