Non-thermal processes in the bow shocks of hyper-velocity stars

Autores
Martinez, Javier Rodrigo; del Palacio, Santiago; Romero, Gustavo Esteban
Año de publicación
2021
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Runaway stars move at supersonic speed with respect to their surrounding medium. Such stars generate bow shocks in the interstellar gas as they propagate. These bow shocks are usually studied by means ofthe infrared radiation and the optical emission lines produced by the forward shock. However, bow shocks can also accelerate particles up to relativistic energies, which in turn produce broadband non-thermal emission. This radiation has been investigated in the reverse shocks of runaway stars with velocities of . 100 km s−1. In thiswork, we expand the research to the case of hyper-velocity stars with speeds reaching thousands of km s−1. We analyze their potential as particle accelerators and non-thermal radiation sources. In particular, we show that non-thermal processes are relevant in both the reverse and forward shocks. We estimate the broadband spectra and assess their detectability as a function of different parameters such as their spectral type, spatial velocity, and the medium density.
Fil: Martinez, Javier Rodrigo. Universidad Nacional de La Plata; Argentina. 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: del Palacio, Santiago. 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
62° Reunión Anual de la Asociación Argentina de Astronomía
Buenos Aires
Argentina
Universidad Nacional de Rosario
Materia
radiation mechanisms: non-thermal
shock waves
acceleration of particles
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:11336/218914
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Non-thermal processes in the bow shocks of hyper-velocity starsMartinez, Javier Rodrigodel Palacio, SantiagoRomero, Gustavo Estebanradiation mechanisms: non-thermalshock wavesacceleration of particleshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Runaway stars move at supersonic speed with respect to their surrounding medium. Such stars generate bow shocks in the interstellar gas as they propagate. These bow shocks are usually studied by means ofthe infrared radiation and the optical emission lines produced by the forward shock. However, bow shocks can also accelerate particles up to relativistic energies, which in turn produce broadband non-thermal emission. This radiation has been investigated in the reverse shocks of runaway stars with velocities of . 100 km s−1. In thiswork, we expand the research to the case of hyper-velocity stars with speeds reaching thousands of km s−1. We analyze their potential as particle accelerators and non-thermal radiation sources. In particular, we show that non-thermal processes are relevant in both the reverse and forward shocks. We estimate the broadband spectra and assess their detectability as a function of different parameters such as their spectral type, spatial velocity, and the medium density.Fil: Martinez, Javier Rodrigo. Universidad Nacional de La Plata; Argentina. 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: del Palacio, Santiago. 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; Argentina62° Reunión Anual de la Asociación Argentina de AstronomíaBuenos AiresArgentinaUniversidad Nacional de RosarioAsociación Argentina de AstronomíaVasquez, Alberto MarcosIglesias, Francisco A.Sgró, Mario AgustínReynoso, Estela Marta2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/218914Non-thermal processes in the bow shocks of hyper-velocity stars; 62° Reunión Anual de la Asociación Argentina de Astronomía; Buenos Aires; Argentina; 2020; 274-2760571-32851669-9521CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://astronomiaargentina.fcaglp.unlp.edu.ar/uploads/docs/baaa62.pdfinfo:eu-repo/semantics/altIdentifier/url/http://astronomiaargentina.fcaglp.unlp.edu.ar/b62/2021BAAA...62..274M.pdfinfo:eu-repo/semantics/altIdentifier/url/https://ui.adsabs.harvard.edu/abs/2021BAAA...62..274M/abstractNacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:18Zoai:ri.conicet.gov.ar:11336/218914instacron: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 09:33:18.832CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Non-thermal processes in the bow shocks of hyper-velocity stars
title Non-thermal processes in the bow shocks of hyper-velocity stars
spellingShingle Non-thermal processes in the bow shocks of hyper-velocity stars
Martinez, Javier Rodrigo
radiation mechanisms: non-thermal
shock waves
acceleration of particles
title_short Non-thermal processes in the bow shocks of hyper-velocity stars
title_full Non-thermal processes in the bow shocks of hyper-velocity stars
title_fullStr Non-thermal processes in the bow shocks of hyper-velocity stars
title_full_unstemmed Non-thermal processes in the bow shocks of hyper-velocity stars
title_sort Non-thermal processes in the bow shocks of hyper-velocity stars
dc.creator.none.fl_str_mv Martinez, Javier Rodrigo
del Palacio, Santiago
Romero, Gustavo Esteban
author Martinez, Javier Rodrigo
author_facet Martinez, Javier Rodrigo
del Palacio, Santiago
Romero, Gustavo Esteban
author_role author
author2 del Palacio, Santiago
Romero, Gustavo Esteban
author2_role author
author
dc.contributor.none.fl_str_mv Vasquez, Alberto Marcos
Iglesias, Francisco A.
Sgró, Mario Agustín
Reynoso, Estela Marta
dc.subject.none.fl_str_mv radiation mechanisms: non-thermal
shock waves
acceleration of particles
topic radiation mechanisms: non-thermal
shock waves
acceleration of particles
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Runaway stars move at supersonic speed with respect to their surrounding medium. Such stars generate bow shocks in the interstellar gas as they propagate. These bow shocks are usually studied by means ofthe infrared radiation and the optical emission lines produced by the forward shock. However, bow shocks can also accelerate particles up to relativistic energies, which in turn produce broadband non-thermal emission. This radiation has been investigated in the reverse shocks of runaway stars with velocities of . 100 km s−1. In thiswork, we expand the research to the case of hyper-velocity stars with speeds reaching thousands of km s−1. We analyze their potential as particle accelerators and non-thermal radiation sources. In particular, we show that non-thermal processes are relevant in both the reverse and forward shocks. We estimate the broadband spectra and assess their detectability as a function of different parameters such as their spectral type, spatial velocity, and the medium density.
Fil: Martinez, Javier Rodrigo. Universidad Nacional de La Plata; Argentina. 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: del Palacio, Santiago. 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
62° Reunión Anual de la Asociación Argentina de Astronomía
Buenos Aires
Argentina
Universidad Nacional de Rosario
description Runaway stars move at supersonic speed with respect to their surrounding medium. Such stars generate bow shocks in the interstellar gas as they propagate. These bow shocks are usually studied by means ofthe infrared radiation and the optical emission lines produced by the forward shock. However, bow shocks can also accelerate particles up to relativistic energies, which in turn produce broadband non-thermal emission. This radiation has been investigated in the reverse shocks of runaway stars with velocities of . 100 km s−1. In thiswork, we expand the research to the case of hyper-velocity stars with speeds reaching thousands of km s−1. We analyze their potential as particle accelerators and non-thermal radiation sources. In particular, we show that non-thermal processes are relevant in both the reverse and forward shocks. We estimate the broadband spectra and assess their detectability as a function of different parameters such as their spectral type, spatial velocity, and the medium density.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Reunión
Journal
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/218914
Non-thermal processes in the bow shocks of hyper-velocity stars; 62° Reunión Anual de la Asociación Argentina de Astronomía; Buenos Aires; Argentina; 2020; 274-276
0571-3285
1669-9521
CONICET Digital
CONICET
url http://hdl.handle.net/11336/218914
identifier_str_mv Non-thermal processes in the bow shocks of hyper-velocity stars; 62° Reunión Anual de la Asociación Argentina de Astronomía; Buenos Aires; Argentina; 2020; 274-276
0571-3285
1669-9521
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://astronomiaargentina.fcaglp.unlp.edu.ar/uploads/docs/baaa62.pdf
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info:eu-repo/semantics/altIdentifier/url/https://ui.adsabs.harvard.edu/abs/2021BAAA...62..274M/abstract
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.coverage.none.fl_str_mv Nacional
dc.publisher.none.fl_str_mv Asociación Argentina de Astronomía
publisher.none.fl_str_mv Asociación Argentina de Astronomía
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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