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

Stuart L. Shapiro; Saul A. Teukolsky; Takashi Nakamura

doi:10.1086/185756

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

Stuart L. Shapiro, Saul A. Teukolsky, Takashi Nakamura

Research output: Contribution to journal › Article › peer-review

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.

Original language	English (US)
Pages (from-to)	L17-L20
Journal	Astrophysical Journal
Volume	357
Issue number	1 PART 2
DOIs	https://doi.org/10.1086/185756
State	Published - Jul 1 1990
Externally published	Yes

Keywords

Pulsars
Stars: neutron
Stars: rotation
Stars: white dwarfs

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

10.1086/185756

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AU - Nakamura, Takashi

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KW - Pulsars

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KW - Stars: rotation

KW - Stars: white dwarfs

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

Abstract

Keywords

ASJC Scopus subject areas

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