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Title:
Hydrodynamic instability and coalescence of close binary systems
Authors:
Lai, Dong; Rasio, Frederic A.; Shapiro, Stuart L.
Affiliation:
AA(Cornell Univ., Ithaca, NY), AB(Cornell Univ., Ithaca, NY), AC(Cornell Univ., Ithaca, NY)
Publication:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 406, no. 2, p. L63-L66. (ApJ Homepage)
Publication Date:
04/1993
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
BINARY STARS, FLOW STABILITY, ORBIT DECAY, STELLAR MODELS, STELLAR ORBITS, COALESCING, GRAVITATIONAL WAVES, NEUTRON STARS, RADIAL VELOCITY
DOI:
10.1086/186787
Bibliographic Code:
1993ApJ...406L..63L

Abstract

The meaning of hydrodynamic instability of close binary systems is clarified, and the resulting large (but finite) value of the radial infall velocity near the end of the coalescence is estimated. Emphasis is placed on the case where the orbital decay is driven by gravitational radiation. A simple calculation of the orbital decay is presented for a simple generic model of a close binary.

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