arXiv:0912.3055 [astro-ph.HE]AbstractReferencesReviewsResources
Radiative viscosity of neutron stars
Shu-Hua Yang, Xiao-Ping Zheng, Chun-Mei Pi
Published 2009-12-16Version 1
We study non-linear effects of radiative viscosity of $npe$ matter in neutron stars for both direct Urca process and modified Urca process, and find that non-linear effects will decrease the ratio of radiative viscosity to bulk viscosity from 1.5 to 0.5 (for direct Urca process) and 0.375 (for modified Urca process). Which means that for small oscillations of neutron star, the large fraction of oscillation energy is emitted as neutrinos; but for large enough ones, bulk viscous dissipation dominates.
Comments: 11pages, 4 figures
Journal: Physics Letters B, Volume 683, 2010, pp. 255-258
Categories: astro-ph.HE
Keywords: neutron star, radiative viscosity, direct urca process, modified urca process, study non-linear effects
Tags: journal article
Related articles: Most relevant | Search more
Rapid Cooling of the Neutron Star in Cassiopeia A Triggered by Neutron Superfluidity in Dense Matter
arXiv:1003.5190 [astro-ph.HE] (Published 2010-03-26)
Using observations of millisecond pulsars to measure mass and radius of neutron stars and implications for equation of state of matter at high density
A new look at Anomalous X-ray Pulsars