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arXiv · 0812.5021

Bulk viscosity of strange matter and r-modes in neutron stars

Debarati Chatterjee·Debades Bandyopadhyay
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Abstract

We discuss bulk viscosity due to non-leptonic processes involving hyperons and Bose-Einstein condensate of negatively charged kaons in neutron stars. It is noted that the hyperon bulk viscosity coefficient is a few order of magnitude larger than that of the case with the condensate. Further it is found that the hyperon bulk viscosity is suppressed in a superconducting phase. The hyperon bulk viscosity efficiently damps the r-mode instability in neutron stars irrespective of whether a superconducting phase is present or not in neutron star interior.

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Debarati Chatterjee, Debades Bandyopadhyay. 2008-12-30. Bulk viscosity of strange matter and r-modes in neutron stars. https://arxiv.org/abs/0812.5021

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