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- Title
Features of the Behavior of Magnetic Chemically Peculiar Stars on the Main Sequence. III.
- Authors
Glagolevskij, Yu. V.
- Abstract
Abstract—The paper studies the magnetic field structures of chemically peculiar magnetic stars. There is a great variety of structures and parameters of magnetic configurations associated with the similar variety of initial conditions in protostellar clouds. It is thought that destruction of a magnetic field does not occur in the non-stationary phase of evolution, and the conditions allow the initial large-scale configurations to be preserved. No matter how tangled a magnetic field in a protostar is, the common vector always corresponds to a poloidal field which is weak relative to local values. By the time a star arrives at the ZAMS, small-scale configurations are destroyed mainly as a result of ohmic dissipation in a time proportional to l2, where is the characteristic size of the magnetic field inhomogeneity. Due to ohmic dissipation and field-line tension, magnetic configurations become simpler up to the structure of a poloidal field which, with enough approximation, can be described by a magnetic dipole. Owing to high conductivity of the stellar matter, magnetic configurations practically do not change during the entire stay on the Main Sequence; theoretically, due to the enormous size of a star and the high conductivity of plasma, a magnetic field can persist until an age of – years. The magnetic star rotates solidly.
- Subjects
STELLAR magnetic fields; MAIN sequence (Astronomy); MAGNETIC structure; MAGNETIC fields; MAGNETIC dipoles
- Publication
Astrophysical Bulletin, 2022, Vol 77, Issue 4, p458
- ISSN
1990-3413
- Publication type
Article
- DOI
10.1134/S1990341322040046