Damping of GRR instability by direct URCA reactions

Details Damping of GRR instability by direct URCA reactions Damping of GRR instability by direct URCA reactions

1995-11-28

arxiv.org/abs/astro-ph/9511136v1

Astron.Astrophys.308:828,1996

Astronomy and Astrophysics

Astrophysics

7 pages

Scientific paper

The role of direct URCA reactions in damping of the gravitational radiation driven instability is discussed. The temperature at which bulk viscosity suppresses completely this instability is calculated. The results are obtained analytically using recent calculations performed in the case of bulk viscosity due to the modified URCA processes (Lindblom 1995; Yoshida & Eriguchi 1995). The bulk viscosity caused by direct URCA reactions is found to reduce significantly the region of temperatures and rotation frequencies where a neutron star is subject to GRR instability.

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