IALP   13078
INSTITUTO DE ASTROFISICA LA PLATA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
On the origin of high-field magnetic white dwarfs
Autor/es:
GARCÍA-BERRO, E.; S. TORRES; P. LORÉN-AGUILAR; AZNAR-SIGUÁN, G.; J. CAMACHO; KULEBI, B.; ISERN, J.; ALTHAUS, L. G.; CÓRSICO, A. H.
Lugar:
Kraków
Reunión:
Workshop; 18th European White Dwarf Workshop; 2012
Institución organizadora:
Pedagogical University of Cracow
Resumen:
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.