Statistics – Computation
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.119..263d&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 119, no. 2, Feb. 1986, p. 263-277.
Statistics
Computation
2
Pulsars, Stellar Models, Stellar Oscillations, Stellar Rotation, Computational Astrophysics, Kelvin-Helmholtz Instability, Vibration Mode
Scientific paper
The effect of slow uniform rotation on the radial and nonradial modes of partially degenerate standard models has been investigated. For the case of the radial mode, it is shown that the destabilizing effect of slow uniform rotation reduces with increased central condensation of the model. However, it is found that the models with a strongly degenerate interior, become more unstable dynamically as a result of slow uniform rotation. Further, it is noted that the frequency of the nonradial modes of oscillation (Kelvin mode) increases due to the presence of rotation. Thus the period of radial modes of oscillation of a slowly uniformly rotating partially degenerate standard model are much larger than the corresponding periods of nonradial (Kelvin) modes.
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