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Rapidly rotating neutron stars in general relativity: Realistic equations of stateWe construct equilibrium sequences of rotating neutron stars in general relativity. We compare results for 14 nuclear matter equations of state. We determine a number of important physical parameters for such stars, including the maximum mass and maximum spin rate. The stability of the configurations to quasi-radial perturbations is assessed. We employ a numerical scheme particularly well suited to handle rapid rotation and large departures from spherical symmetry. We provide an extensive tabulation of models for future reference. Two classes of evolutionary sequences of fixed baryon rest mass and entropy are explored: normal sequences, which behave very much like Newtonian sequences, and supramassive sequences, which exist for neutron stars solely because of general relativistic effects. Adiabatic dissipation of energy and angular momentum causes a star to evolve in quasi-stationary fashion along an evolutionary sequence. Supramassive sequences have masses exceeding the maximum mass of a nonrotating neutron star. A supramassive star evolves toward eventual catastrophic collapse to a black hole. Prior to collapse, the star actually spins up as it loses angular momentum, an effect that may provide an observable precursor to gravitational collapse to a black hole.
Document ID
19950053110
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Cook, Gregory B.
(Cornell University Ithaca, NY, United States)
Shapiro, Stuart L.
(Cornell University Ithaca, NY, United States)
Teukolsky, Saul A.
(Cornell University Ithaca, NY, United States)
Date Acquired
August 16, 2013
Publication Date
April 1, 1994
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 424
Issue: 2
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
95A84709
Funding Number(s)
CONTRACT_GRANT: NSF AST-91-19475
CONTRACT_GRANT: NAGW-2364
CONTRACT_GRANT: NSF PHY-90-07834
Distribution Limits
Public
Copyright
Other

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