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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/93578
Ver los metadatos del registro completo
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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:UNLP2025-10-22T17:00:17Zoai: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:13292025-10-22 17:00:17.516SEDICI (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 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/93578 |
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http://sedici.unlp.edu.ar/handle/10915/93578 |
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eng |
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eng |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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