Runaway stars as cosmic ray injectors inside molecular clouds
- Autores
- Valle, María Victoria del; 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 theGMCinteracting with the matter.We present a model for the non-thermal radiation generated by protons and secondary pairs accelerated in the bowshocks of massive runaway 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 of ~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.
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Astronómicas
Cosmic rays
Gamma-rays: ISM
ISM: clouds
Radiation mechanisms: non-thermal - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85939
Ver los metadatos del registro completo
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Runaway stars as cosmic ray injectors inside molecular cloudsValle, María Victoria delRomero, Gustavo EstebanSantos-Lima, R.Ciencias AstronómicasCosmic raysGamma-rays: ISMISM: cloudsRadiation mechanisms: non-thermalGiant 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 theGMCinteracting with the matter.We present a model for the non-thermal radiation generated by protons and secondary pairs accelerated in the bowshocks of massive runaway 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 of ~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.Facultad de Ciencias Astronómicas y Geofísicas2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf207-220http://sedici.unlp.edu.ar/handle/10915/85939enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu2732info: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:UNLP2025-09-29T11:17:00Zoai:sedici.unlp.edu.ar:10915/85939Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:17:00.222SEDICI (UNLP) - Universidad Nacional de La Platafalse |
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 Valle, María Victoria del Ciencias Astronómicas Cosmic rays Gamma-rays: ISM ISM: clouds Radiation mechanisms: non-thermal |
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 |
Valle, María Victoria del Romero, Gustavo Esteban Santos-Lima, R. |
author |
Valle, María Victoria del |
author_facet |
Valle, María Victoria del 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 |
Ciencias Astronómicas Cosmic rays Gamma-rays: ISM ISM: clouds Radiation mechanisms: non-thermal |
topic |
Ciencias Astronómicas Cosmic rays Gamma-rays: ISM ISM: clouds Radiation mechanisms: non-thermal |
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 theGMCinteracting with the matter.We present a model for the non-thermal radiation generated by protons and secondary pairs accelerated in the bowshocks of massive runaway 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 of ~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. Facultad de Ciencias Astronómicas y Geofísicas |
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 theGMCinteracting with the matter.We present a model for the non-thermal radiation generated by protons and secondary pairs accelerated in the bowshocks of massive runaway 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 of ~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 |
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/10915/85939 |
url |
http://sedici.unlp.edu.ar/handle/10915/85939 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0035-8711 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu2732 |
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 207-220 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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