Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-02-28
Mon.Not.Roy.Astron.Soc.361:1415,2005
Astronomy and Astrophysics
Astrophysics
10 pages, 3 figures, an important reference to the paper by Finzi & Wolf (1968) is added; analytical consideration of the prob
Scientific paper
10.1111/j.1365-2966.2005.09295.x
We have derived a set of equations to describe the thermal evolution of a neutron star which undergoes small-amplitude radial pulsations. We have taken into account, in the frame of the General Theory of Relativity, the pulsation damping due to the bulk and shear viscosity and the accompanying heating of the star. The neutrino emission of a pulsating non-superfluid star and its heating due to the bulk viscosity are calculated assuming that both processes are determined by the non-equilibrium modified Urca process. Analytical and numerical solutions to the set of equations of the stellar evolution are obtained for linear and strongly non-linear deviations from beta-equilibrium. It is shown that a pulsating star may be heated to very high temperatures, while the pulsations damp very slowly with time (a power law damping for 100-1000 years), as long as the damping is determined by the bulk viscosity. The contribution of the shear viscosity to the damping becomes important in a rather cool star with a low pulsation energy.
Gnedin Oleg Yuri
Gusakov Mikhail E.
Yakovlev Dmitry G.
No associations
LandOfFree
Thermal Evolution of a Pulsating Neutron Star does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermal Evolution of a Pulsating Neutron Star, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal Evolution of a Pulsating Neutron Star will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-142042