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On the origin of high-field magnetic white dwarfs
García-Berro Montilla, Enrique; Torres Gil, Santiago; Lorén Aguilar, Pablo; Aznar Siguan, Gabriela; Camacho Díaz, Judit; Kulebi, Baybar; Isern Vilaboy, Jordi; Althaus, Leandro Gabriel; Corsico, Alejandro H.
Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica; Universitat Politècnica de Catalunya. CTE-CRAE - Grup de Recerca en Ciències i Tecnologies de l'Espai
Àrees temàtiques de la UPC::Física::Astronomia i astrofísica
White dwarf stars
High-field magnetic white dwarfs have been long suspected to be the result of stellar mergers. However
the nature of the coalescing stars and the precise mechanism that produces the magnetic field are still unknown. Here we show that the hot
convective
differentially rotating corona present in the outer layers of the remnant of the merger of two degenerate cores is able to produce magnetic fields of the required strength that do not decay for long timescales. We also show
using an state-of-the-art Monte Carlo simulator
that the expected number of high-field magnetic white dwarfs produced in this way is consistent with that found in the solar neighborhood.
Estels nans
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Astronomical Society of the Pacific
         

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