Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...169..161h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 169, no. 1-2, Nov. 1986, p. 161-163.
Astronomy and Astrophysics
Astrophysics
2
Stellar Cores, Stellar Envelopes, Stellar Magnetic Fields, Stellar Rotation, Circular Polarization, Late Stars, Magnetohydrodynamic Waves, Solar Neutrinos
Scientific paper
The primordial magnetic field in the radiative core of late type stars will be reduced by ohmic dissipation. In particular, small scale magnetic fields will be dissipated almost completely in their lifetime. However, in a rotating star, a regeneration mechanism is in operation: circularly polarized Alfven waves excited in the convection zone will propagate inward along the magnetic field and contribute to alpha(sq)-dynamo process. It is suggested that in the radiative core of some solar type stars, a few thousand gauss complicated magnetic field with a spectrum B(K) = const. K (to the -1/3) is maintained. The role of a finite core magnetic field in the chemical mixing of the interior, which affects not only the neutrino flux of the solar type stars but also the evolution of these stars, is discussed.
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