Volume 381, Number 3, JanuaryIII 2002
|Page(s)||1080 - 1089|
|Published online||15 January 2002|
Bulk viscosity in superfluid neutron star cores
III. Effects of hyperons
N. Copernicus Astronomical Center, Bartycka 18, 00-716 Warszawa, Poland
2 Ioffe Physical Technical Institute, Politekhnicheskaya 26, 194021 St.-Petersburg, Russia e-mail: ksen,email@example.com
Corresponding author: P. Haensel, firstname.lastname@example.org
Accepted: 29 October 2001
The bulk viscosity of neutron star cores containing hyperons is studied taking into account non-equilibrium weak process . The rapid growth of the bulk viscosity within the neutron star core associated with switching on new reactions (modified Urca process, direct Urca process, hyperon reactions) is analyzed. The suppression of the bulk viscosity by superfluidity of baryons is considered and found out to be very important.
Key words: stars: neutron / dense matter
© ESO, 2002
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