Why are some A stars magnetic, while most are not?
G.A. Wade, J. Silvester, K. Bale, N. Johnson, J. Power, M. Auri\`ere,, F. Ligni\'eres, B. Dintrans, J.-F. Donati, A. Hui Bon Hoa, D. Mouillet, S., Naseri, F. Paletou, P. Petit, F. Rincon, N. Toque, S. Bagnulo, C.P. Folsom,, J.D. Landstreet, M. Gruberbauer, T. Lueftinger
TL;DR
This paper proposes a simple physical model explaining why only a small fraction of A and B type stars exhibit strong magnetic fields, based on new observational insights.
Contribution
It introduces a novel, physically motivated model that accounts for the rarity of magnetic A and B stars compared to non-magnetic ones.
Findings
A small fraction of A and B stars have strong magnetic fields.
The model aligns with recent observational data.
Provides a natural explanation for the magnetic field distribution.
Abstract
A small fraction of intermediate-mass main sequence (A and B type) stars have strong, organised magnetic fields. The large majority of such stars, however, show no evidence for magnetic fields, even when observed with very high precision. In this paper we describe a simple model, motivated by qualitatively new observational results, that provides a natural physical explanation for the small fraction of observed magnetic stars.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astro and Planetary Science · Astronomy and Astrophysical Research