Double degenerate mergers as progenitors of high-field magnetic white dwarfs

Autores
García Berro, Enrique; Lorén Aguilar, Pablo; Aznar Siguán, Gabriela; Torres, Santiago; Camacho, Judit; Althaus, Leandro Gabriel; Córsico, Alejandro Hugo; Külebi, Baybars; Isern, Jordi
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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 can produce magnetic fields of the required strength that do not decay for long timescales. Using a state-of-the-art Monte Carlo simulator, we also show that the expected number of high-field magnetic white dwarfs produced in this way is consistent with that found in the solar neighborhood.
Instituto de Astrofísica de La Plata
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Astronomía
binaries: general
stars: evolution
stars: interiors
stars: magnetic field
stars: rotation
white dwarfs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/93578

id SEDICI_3436bad15f16315714fb2c9177efdb61
oai_identifier_str oai:sedici.unlp.edu.ar:10915/93578
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Double degenerate mergers as progenitors of high-field magnetic white dwarfsGarcía Berro, EnriqueLorén Aguilar, PabloAznar Siguán, GabrielaTorres, SantiagoCamacho, JuditAlthaus, Leandro GabrielCórsico, Alejandro HugoKülebi, BaybarsIsern, JordiAstronomíabinaries: generalstars: evolutionstars: interiorsstars: magnetic fieldstars: rotationwhite dwarfsHigh-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 can produce magnetic fields of the required strength that do not decay for long timescales. Using a state-of-the-art Monte Carlo simulator, we also show that the expected number of high-field magnetic white dwarfs produced in this way is consistent with that found in the solar neighborhood.Instituto de Astrofísica de La PlataFacultad de Ciencias Astronómicas y Geofísicas2012-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf749-754http://sedici.unlp.edu.ar/handle/10915/93578enginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/749/1/25/metainfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/handle/11336/42642info:eu-repo/semantics/altIdentifier/issn/0004-637Xinfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/749/1/25info:eu-repo/semantics/altIdentifier/hdl/11336/42642info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:19:26Zoai:sedici.unlp.edu.ar:10915/93578Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:19:27.174SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Double degenerate mergers as progenitors of high-field magnetic white dwarfs
title Double degenerate mergers as progenitors of high-field magnetic white dwarfs
spellingShingle Double degenerate mergers as progenitors of high-field magnetic white dwarfs
García Berro, Enrique
Astronomía
binaries: general
stars: evolution
stars: interiors
stars: magnetic field
stars: rotation
white dwarfs
title_short Double degenerate mergers as progenitors of high-field magnetic white dwarfs
title_full Double degenerate mergers as progenitors of high-field magnetic white dwarfs
title_fullStr Double degenerate mergers as progenitors of high-field magnetic white dwarfs
title_full_unstemmed Double degenerate mergers as progenitors of high-field magnetic white dwarfs
title_sort Double degenerate mergers as progenitors of high-field magnetic white dwarfs
dc.creator.none.fl_str_mv García Berro, Enrique
Lorén Aguilar, Pablo
Aznar Siguán, Gabriela
Torres, Santiago
Camacho, Judit
Althaus, Leandro Gabriel
Córsico, Alejandro Hugo
Külebi, Baybars
Isern, Jordi
author García Berro, Enrique
author_facet García Berro, Enrique
Lorén Aguilar, Pablo
Aznar Siguán, Gabriela
Torres, Santiago
Camacho, Judit
Althaus, Leandro Gabriel
Córsico, Alejandro Hugo
Külebi, Baybars
Isern, Jordi
author_role author
author2 Lorén Aguilar, Pablo
Aznar Siguán, Gabriela
Torres, Santiago
Camacho, Judit
Althaus, Leandro Gabriel
Córsico, Alejandro Hugo
Külebi, Baybars
Isern, Jordi
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Astronomía
binaries: general
stars: evolution
stars: interiors
stars: magnetic field
stars: rotation
white dwarfs
topic Astronomía
binaries: general
stars: evolution
stars: interiors
stars: magnetic field
stars: rotation
white dwarfs
dc.description.none.fl_txt_mv 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 can produce magnetic fields of the required strength that do not decay for long timescales. Using a state-of-the-art Monte Carlo simulator, we also show that the expected number of high-field magnetic white dwarfs produced in this way is consistent with that found in the solar neighborhood.
Instituto de Astrofísica de La Plata
Facultad de Ciencias Astronómicas y Geofísicas
description 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 can produce magnetic fields of the required strength that do not decay for long timescales. Using a state-of-the-art Monte Carlo simulator, we also show that the expected number of high-field magnetic white dwarfs produced in this way is consistent with that found in the solar neighborhood.
publishDate 2012
dc.date.none.fl_str_mv 2012-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/93578
url http://sedici.unlp.edu.ar/handle/10915/93578
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/749/1/25/meta
info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/handle/11336/42642
info:eu-repo/semantics/altIdentifier/issn/0004-637X
info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/749/1/25
info:eu-repo/semantics/altIdentifier/hdl/11336/42642
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
749-754
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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