Other
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281..292d&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 281, June 1, 1984, p. 292-302.
Other
2
Magnetic Stars, Stellar Cores, Stellar Magnetic Fields, Stellar Models, Dynamic Stability, Isothermal Processes, Poloidal Flux, Polytropic Processes, Stellar Envelopes, Stellar Evolution, Stellar Mass, Stellar Oscillations, Stellar Structure
Scientific paper
The effect of a poloidal magnetic field on stellar models with nondegenerate isothermal cores and envelopes in either radiative or convective equilibrium has been investigated using a perturbation technique. It is shown that, for models with radiative envelopes, the presence of a magnetic field tends to reduce the maximum limit on the core mass fraction (ratio of core mass to the total mass). In the case of models with convective envelopes, for a given strength of the magnetic field, the maximum mass of the composite star is reached at a critical value of the central density which is higher than the corresponding nonmagnetic case. Using an unrestricted second-order virial tensor method, the effect of a magnetic field on the dynamical stability of these models is investigated. It has been shown that the magnetic field induces stability in the models by shifting the point of critical stability to a higher value of central density.
Das Mrinal K.
Kar Jayanta
Tandon J. N.
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