Runaway stars as cosmic ray injectors inside molecular clouds

Autores
del Valle, Maria Victoria; Romero, Gustavo Esteban; Santos Lima, R.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Giant molecular clouds (GMCs) are a new population of gamma-ray sources, being the target of cosmic rays (CRs) – locally accelerated or not –. These clouds host very young stellar clusters where massive star formation takes place. Eventually, some of the stars are ejected from the clusters, becoming runaway stars. These stars move supersonically through the cloud and develop bowshocks where particles can be accelerated up to relativistic energies. As a result, the bowshocks present non-thermal emission, and inject relativistic protons in the cloud. These protons diffuse in the GMC interacting with the matter. We present a model for the non-thermal radiation generated by protons and secondary pairs accelerated in the bowshocks of massive runaways stars within young GMCs. We solve the transport equation for primary protons and secondary pairs as the stars move through the cloud. We present non-thermal emissivity maps in radio and in gamma rays as a function of time. We obtain X-ray luminosities of the order ∼ 1032 erg s−1 and gamma-ray luminosities ∼ 1034 erg s−1 . We conclude that, under some assumptions, relativistic protons from massive runaway stars interacting with matter in GMCs give rise to extended non-thermal sources.
Fil: del Valle, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto Argentino de Radioastronomia (i); Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Romero, Gustavo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Santos Lima, R.. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Materia
Nonthermal mechanisms
Clouds
Cosmic rays
Gamma rays
Radiation mechanisms
Interstellar medium
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/7057
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/7057
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Runaway stars as cosmic ray injectors inside molecular cloudsdel Valle, Maria VictoriaRomero, Gustavo EstebanSantos Lima, R.Nonthermal mechanismsCloudsCosmic raysGamma raysRadiation mechanismsInterstellar mediumhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Giant molecular clouds (GMCs) are a new population of gamma-ray sources, being the target of cosmic rays (CRs) – locally accelerated or not –. These clouds host very young stellar clusters where massive star formation takes place. Eventually, some of the stars are ejected from the clusters, becoming runaway stars. These stars move supersonically through the cloud and develop bowshocks where particles can be accelerated up to relativistic energies. As a result, the bowshocks present non-thermal emission, and inject relativistic protons in the cloud. These protons diffuse in the GMC interacting with the matter. We present a model for the non-thermal radiation generated by protons and secondary pairs accelerated in the bowshocks of massive runaways stars within young GMCs. We solve the transport equation for primary protons and secondary pairs as the stars move through the cloud. We present non-thermal emissivity maps in radio and in gamma rays as a function of time. We obtain X-ray luminosities of the order ∼ 1032 erg s−1 and gamma-ray luminosities ∼ 1034 erg s−1 . We conclude that, under some assumptions, relativistic protons from massive runaway stars interacting with matter in GMCs give rise to extended non-thermal sources.Fil: del Valle, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto Argentino de Radioastronomia (i); Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Romero, Gustavo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Santos Lima, R.. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaWiley2015-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/7057del Valle, Maria Victoria; Romero, Gustavo Esteban; Santos Lima, R.; Runaway stars as cosmic ray injectors inside molecular clouds; Wiley; Monthly Notices of the Royal Astronomical Society; 3-20150035-8711enginfo:eu-repo/semantics/altIdentifier/arxiv/http://arxiv.org/abs/1412.6535info:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/448/1/207info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu2732info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:52Zoai:ri.conicet.gov.ar:11336/7057instacron: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:34982025-09-29 09:33:52.943CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Runaway stars as cosmic ray injectors inside molecular clouds
title Runaway stars as cosmic ray injectors inside molecular clouds
spellingShingle Runaway stars as cosmic ray injectors inside molecular clouds
del Valle, Maria Victoria
Nonthermal mechanisms
Clouds
Cosmic rays
Gamma rays
Radiation mechanisms
Interstellar medium
title_short Runaway stars as cosmic ray injectors inside molecular clouds
title_full Runaway stars as cosmic ray injectors inside molecular clouds
title_fullStr Runaway stars as cosmic ray injectors inside molecular clouds
title_full_unstemmed Runaway stars as cosmic ray injectors inside molecular clouds
title_sort Runaway stars as cosmic ray injectors inside molecular clouds
dc.creator.none.fl_str_mv del Valle, Maria Victoria
Romero, Gustavo Esteban
Santos Lima, R.
author del Valle, Maria Victoria
author_facet del Valle, Maria Victoria
Romero, Gustavo Esteban
Santos Lima, R.
author_role author
author2 Romero, Gustavo Esteban
Santos Lima, R.
author2_role author
author
dc.subject.none.fl_str_mv Nonthermal mechanisms
Clouds
Cosmic rays
Gamma rays
Radiation mechanisms
Interstellar medium
topic Nonthermal mechanisms
Clouds
Cosmic rays
Gamma rays
Radiation mechanisms
Interstellar medium
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Giant molecular clouds (GMCs) are a new population of gamma-ray sources, being the target of cosmic rays (CRs) – locally accelerated or not –. These clouds host very young stellar clusters where massive star formation takes place. Eventually, some of the stars are ejected from the clusters, becoming runaway stars. These stars move supersonically through the cloud and develop bowshocks where particles can be accelerated up to relativistic energies. As a result, the bowshocks present non-thermal emission, and inject relativistic protons in the cloud. These protons diffuse in the GMC interacting with the matter. We present a model for the non-thermal radiation generated by protons and secondary pairs accelerated in the bowshocks of massive runaways stars within young GMCs. We solve the transport equation for primary protons and secondary pairs as the stars move through the cloud. We present non-thermal emissivity maps in radio and in gamma rays as a function of time. We obtain X-ray luminosities of the order ∼ 1032 erg s−1 and gamma-ray luminosities ∼ 1034 erg s−1 . We conclude that, under some assumptions, relativistic protons from massive runaway stars interacting with matter in GMCs give rise to extended non-thermal sources.
Fil: del Valle, Maria Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto Argentino de Radioastronomia (i); Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Romero, Gustavo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Santos Lima, R.. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
description Giant molecular clouds (GMCs) are a new population of gamma-ray sources, being the target of cosmic rays (CRs) – locally accelerated or not –. These clouds host very young stellar clusters where massive star formation takes place. Eventually, some of the stars are ejected from the clusters, becoming runaway stars. These stars move supersonically through the cloud and develop bowshocks where particles can be accelerated up to relativistic energies. As a result, the bowshocks present non-thermal emission, and inject relativistic protons in the cloud. These protons diffuse in the GMC interacting with the matter. We present a model for the non-thermal radiation generated by protons and secondary pairs accelerated in the bowshocks of massive runaways stars within young GMCs. We solve the transport equation for primary protons and secondary pairs as the stars move through the cloud. We present non-thermal emissivity maps in radio and in gamma rays as a function of time. We obtain X-ray luminosities of the order ∼ 1032 erg s−1 and gamma-ray luminosities ∼ 1034 erg s−1 . We conclude that, under some assumptions, relativistic protons from massive runaway stars interacting with matter in GMCs give rise to extended non-thermal sources.
publishDate 2015
dc.date.none.fl_str_mv 2015-03
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/11336/7057
del Valle, Maria Victoria; Romero, Gustavo Esteban; Santos Lima, R.; Runaway stars as cosmic ray injectors inside molecular clouds; Wiley; Monthly Notices of the Royal Astronomical Society; 3-2015
0035-8711
url http://hdl.handle.net/11336/7057
identifier_str_mv del Valle, Maria Victoria; Romero, Gustavo Esteban; Santos Lima, R.; Runaway stars as cosmic ray injectors inside molecular clouds; Wiley; Monthly Notices of the Royal Astronomical Society; 3-2015
0035-8711
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/arxiv/http://arxiv.org/abs/1412.6535
info:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/448/1/207
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu2732
info:eu-repo/semantics/altIdentifier/doi/
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
publisher.none.fl_str_mv Wiley
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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score 13.070432

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