Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission
- Autores
- Pittard, J. M.; Vila, Gabriela Soledad; Romero, Gustavo Esteban
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present a model for the non-thermal emission from a colliding-wind binary. Relativistic protons and electrons are assumed to be accelerated through diffusive shock acceleration (DSA) at the global shocks bounding the wind?wind collision region. The non-linear effects of the backreaction due to the cosmic ray pressure on the particle acceleration process and the cooling of the non-thermal particles as they flow downstream from the shocks are included. We explore how the non-thermal particle distribution and the keV−GeV emission changes with the stellar separation and the viewing angle of the system, and with the momentum ratio of the winds. We confirm earlier findings that DSA is very efficient when magnetic field amplification is not included, leading to significantly modified shocks. We also find that the non-thermal flux scales with the binary separation in a complicated way and that the anisotropic inverse Compton emission shows only a moderate variation with viewing angle due to the spatial extent of the wind?wind collision.
Fil: Pittard, J. M.. School Of Physics And Astronomy; Reino Unido
Fil: Vila, Gabriela Soledad. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina
Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina - Materia
-
binaries: general
gamma-rays: stars
radiation mechanisms: nonthermal
stars: early-type
stars: winds, outflows
stars: Wolf-Rayet - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/121351
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Colliding-wind binary systems: diffusive shock acceleration and non-thermal emissionPittard, J. M.Vila, Gabriela SoledadRomero, Gustavo Estebanbinaries: generalgamma-rays: starsradiation mechanisms: nonthermalstars: early-typestars: winds, outflowsstars: Wolf-Rayethttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a model for the non-thermal emission from a colliding-wind binary. Relativistic protons and electrons are assumed to be accelerated through diffusive shock acceleration (DSA) at the global shocks bounding the wind?wind collision region. The non-linear effects of the backreaction due to the cosmic ray pressure on the particle acceleration process and the cooling of the non-thermal particles as they flow downstream from the shocks are included. We explore how the non-thermal particle distribution and the keV−GeV emission changes with the stellar separation and the viewing angle of the system, and with the momentum ratio of the winds. We confirm earlier findings that DSA is very efficient when magnetic field amplification is not included, leading to significantly modified shocks. We also find that the non-thermal flux scales with the binary separation in a complicated way and that the anisotropic inverse Compton emission shows only a moderate variation with viewing angle due to the spatial extent of the wind?wind collision.Fil: Pittard, J. M.. School Of Physics And Astronomy; Reino UnidoFil: Vila, Gabriela Soledad. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaWiley Blackwell Publishing, Inc2020-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/121351Pittard, J. M.; Vila, Gabriela Soledad; Romero, Gustavo Esteban; Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 495; 2; 6-2020; 2205-22210035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/495/2/2205/5824173info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa1099info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:02:40Zoai:ri.conicet.gov.ar:11336/121351instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:02:40.81CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission |
title |
Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission |
spellingShingle |
Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission Pittard, J. M. binaries: general gamma-rays: stars radiation mechanisms: nonthermal stars: early-type stars: winds, outflows stars: Wolf-Rayet |
title_short |
Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission |
title_full |
Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission |
title_fullStr |
Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission |
title_full_unstemmed |
Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission |
title_sort |
Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission |
dc.creator.none.fl_str_mv |
Pittard, J. M. Vila, Gabriela Soledad Romero, Gustavo Esteban |
author |
Pittard, J. M. |
author_facet |
Pittard, J. M. Vila, Gabriela Soledad Romero, Gustavo Esteban |
author_role |
author |
author2 |
Vila, Gabriela Soledad Romero, Gustavo Esteban |
author2_role |
author author |
dc.subject.none.fl_str_mv |
binaries: general gamma-rays: stars radiation mechanisms: nonthermal stars: early-type stars: winds, outflows stars: Wolf-Rayet |
topic |
binaries: general gamma-rays: stars radiation mechanisms: nonthermal stars: early-type stars: winds, outflows stars: Wolf-Rayet |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
We present a model for the non-thermal emission from a colliding-wind binary. Relativistic protons and electrons are assumed to be accelerated through diffusive shock acceleration (DSA) at the global shocks bounding the wind?wind collision region. The non-linear effects of the backreaction due to the cosmic ray pressure on the particle acceleration process and the cooling of the non-thermal particles as they flow downstream from the shocks are included. We explore how the non-thermal particle distribution and the keV−GeV emission changes with the stellar separation and the viewing angle of the system, and with the momentum ratio of the winds. We confirm earlier findings that DSA is very efficient when magnetic field amplification is not included, leading to significantly modified shocks. We also find that the non-thermal flux scales with the binary separation in a complicated way and that the anisotropic inverse Compton emission shows only a moderate variation with viewing angle due to the spatial extent of the wind?wind collision. Fil: Pittard, J. M.. School Of Physics And Astronomy; Reino Unido Fil: Vila, Gabriela Soledad. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; Argentina |
description |
We present a model for the non-thermal emission from a colliding-wind binary. Relativistic protons and electrons are assumed to be accelerated through diffusive shock acceleration (DSA) at the global shocks bounding the wind?wind collision region. The non-linear effects of the backreaction due to the cosmic ray pressure on the particle acceleration process and the cooling of the non-thermal particles as they flow downstream from the shocks are included. We explore how the non-thermal particle distribution and the keV−GeV emission changes with the stellar separation and the viewing angle of the system, and with the momentum ratio of the winds. We confirm earlier findings that DSA is very efficient when magnetic field amplification is not included, leading to significantly modified shocks. We also find that the non-thermal flux scales with the binary separation in a complicated way and that the anisotropic inverse Compton emission shows only a moderate variation with viewing angle due to the spatial extent of the wind?wind collision. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-06 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 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://hdl.handle.net/11336/121351 Pittard, J. M.; Vila, Gabriela Soledad; Romero, Gustavo Esteban; Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 495; 2; 6-2020; 2205-2221 0035-8711 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/121351 |
identifier_str_mv |
Pittard, J. M.; Vila, Gabriela Soledad; Romero, Gustavo Esteban; Colliding-wind binary systems: diffusive shock acceleration and non-thermal emission; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 495; 2; 6-2020; 2205-2221 0035-8711 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/495/2/2205/5824173 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa1099 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842269768457912320 |
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13.13397 |