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  The Crustal Rigidity of a Neutron Star, and Implications for PSR 1828-11 and other Precession Candidates

Cutler, C., Ushomirsky, G., & Link, B. (2003). The Crustal Rigidity of a Neutron Star, and Implications for PSR 1828-11 and other Precession Candidates. Astrophysical Journal, 588, 975-991.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-526E-C Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-526F-A
Genre: Journal Article

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3402.pdf (Publisher version), 586KB
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 Creators:
Cutler, Curt1, Author
Ushomirsky, Greg, Author
Link, Bennett, Author
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24013              

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 Abstract: We calculate the crustal rigidity parameter, b, of a neutron star (NS), and show that b is a factor 40 smaller than the standard estimate due to Baym & Pines (1971). For a NS with a relaxed crust, the NS's free-precession frequency is directly proportional to b. We apply our result for b to PSR 1828-11, a 2.5 Hz pulsar that appears to be precessing with period 511 d. Assuming this 511-d period is set by crustal rigidity, we show that this NS's crust is not relaxed, and that its reference spin (roughly, the spin for which the crust is most relaxed) is 40 Hz, and that the average spindown strain in the crust is 5 imes 10^{-5}. We also briefly describe the implications of our b calculation for other well-known precession candidat

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Language(s): eng - English
 Dates: 2003
 Publication Status: Published in print
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 Identifiers: eDoc: 3402
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Title: Astrophysical Journal
Source Genre: Journal
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Pages: - Volume / Issue: 588 Sequence Number: - Start / End Page: 975 - 991 Identifier: -