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Spin-up of a rapidly rotating star by angular momentum loss

Shapiro, Stuart L. and Teukolsky, Saul A. and Nakamura, Takashi (1990) Spin-up of a rapidly rotating star by angular momentum loss. Astrophysical Journal, 357 (1). L17-L20. ISSN 0004-637X. doi:10.1086/185756.

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Can a rotating star spin up by radiating away its angular momentum? And if so, what can we infer about the properties of such a star? We show that the spin of a rapidly rotating star like a pulsar can indeed increase as it radiates away energy and angular momentum. For this to happen the adiabatic index governing the equation of state must be very close to 4/3 if the star is rotating uniformly. Otherwise the star must be rotating differentially.

Item Type:Article
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URLURL TypeDescription
Teukolsky, Saul A.0000-0001-9765-4526
Additional Information:© 1990. The American Astronomical Society. Received 1990 March 16; accepted 1990 April 11. It is a pleasure to thank R. H. Durisen and L. S. Finn for several helpful discussions. This work has been supported in part by National Science Foundation grants AST 87-14475, PHY 86-03284 and INT 88-15793 at Cornell University. This cooperative research project has been supported jointly by the NSF and JSPS under the US-Japan Cooperative Science Program. Fellowship support from the John Simon Guggenheim Memorial Foundation is gratefully acknowledged by S. L. S.
Funding AgencyGrant Number
NSFAST 87-14475
NSFPHY 86-03284
NSFINT 88-15793
Japan Society for the Promotion of Science (JSPS)UNSPECIFIED
John Simon Guggenheim FoundationUNSPECIFIED
Subject Keywords:pulsars — stars: neutron — stars: rotation — stars: white dwarfs
Issue or Number:1
Record Number:CaltechAUTHORS:20180606-162410693
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86867
Deposited By: George Porter
Deposited On:07 Jun 2018 21:58
Last Modified:15 Nov 2021 20:42

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