Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258..354d&link_type=abstract
Astrophysical Journal, Part 1, vol. 258, July 1, 1982, p. 354-366. Research supported by the Indian National Science Academy.
Astronomy and Astrophysics
Astrophysics
5
Convective Flow, Magnetic Effects, Radiation Pressure, Stellar Models, Stellar Oscillations, Adiabatic Flow, Eigenvalues, Eigenvectors, Pressure Effects, Radiation Effects, Resonant Frequencies, Stellar Magnetic Fields, Vibration Mode
Scientific paper
Using an unrestricted second order virial tensor analysis, the characteristic frequencies of small adiabatic oscillations of a convective stellar model in the presence of a weak poloidal magnetic field, with significant radiation pressure, have been calculated. In the absence of the magnetic field, the effect of increase in radiation pressure is to decrease the frequencies of radial modes, in spite of the increase in central condensation of the system. The characteristic frequencies of the transverse shear mode, the toroidal mode, and the pulsation modes show a general increase with the increase in the field strength. The marginal stability of the configuration in the presence of the magnetic field has also been discussed.
Das Mrinal K.
Kar Jayanta
Tandon J. N.
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