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. https://resolver.caltech.edu/CaltechAUTHORS:20180606-162410693
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Abstract
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.
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| 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. | ||||||||||||
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| Subject Keywords: | pulsars — stars: neutron — stars: rotation — stars: white dwarfs | ||||||||||||
| Issue or Number: | 1 | ||||||||||||
| Record Number: | CaltechAUTHORS:20180606-162410693 | ||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20180606-162410693 | ||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
| ID Code: | 86867 | ||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||
| Deposited By: | George Porter | ||||||||||||
| Deposited On: | 07 Jun 2018 21:58 | ||||||||||||
| Last Modified: | 22 Nov 2019 09:58 |
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