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Thermonuclear Excitation of R-modes in Neutron Stars

Published online by Cambridge University Press:  12 April 2016

Umin Lee
Affiliation:
Laboratoire de Physique, Ecole Normale Superieure de Lyon, 69364 Lyon Cedex 07
Tod E. Strohmayer
Affiliation:
Code 666, NASA/Goddard Space Flight Center, Greenbelt, MD 20771

Abstract

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Neutron stars display phenomena which result from the burning of accreted nuclear fuel in their surface layers. In addition to producing X-ray bursts and other temporal phenomema, such burning can excite oscillation modes of the neutron star. Here we investigate the stability of R-modes in uniformly rotating neutron stars using nonadiabatic pulsation calculations of steady burning envelopes on accreting neutron stars. We find that the fundamental R-modes are unstable for a large range of accretion rates, and thus might manifest themselves observationally in the power spectra of accreting sources above about 1 kHz.

Type
Part 2. Poster Papers
Copyright
Copyright © Astronomical Society of the Pacific 1995

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