出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The growth of unstable modes in neutron stars could result in copious emission of gravitational waves, which the upcoming GW detectors aim to detect. The gravitational waves from these unstable modes carry signatures of the composition of dense neutron star matter, and provide a unique tool to probe the stellar interior. The r-mode is one such mode, related to the rotation of the star, that grows rapidly in amplitude until it is saturated by non-linear effects. Bulk viscosity is one of the prime factors that determines whether r-modes become unstable. We study how magnetic field affects the bulk viscosity of dense hadronic matter due to the direct Urca process, incorporating non-linear effects in the supra-thermal regime.
