The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission

Autores
Rodríguez Kamenetzky, Adriana Raquel; Carrasco Gonzalez, Carlos Eugenio; Araudo, Anabella Teresa; Romero, Gustavo Esteban; Torrelles, José M.; Rodríguez, Luis F.; Anglada, Guillem; Martí, Josep; Perucho, Manel; Valotto, Carlos Alberto
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Radio emission from protostellar jets is usually dominated by free-free emission from thermal electrons. However, in some cases, it has been proposed that nonthermal emission could also be present. This additional contribution from nonthermal emission has been inferred through negative spectral indices at centimeter wavelengths in some regions of the radio jets. In the case of HH 80-81, one of the most powerful protostellar jets known, linearly polarized emission has also been detected, revealing that the nonthermal emission is of synchrotron nature from a population of relativistic particles in the jet. This result implies that an acceleration mechanism should be taking place in some parts of the jet. Here, we present new high sensitivity and high angular resolution radio observations at several wavelengths (in the 3-20 cm range) of the HH 80-81 radio jet. These new observations represent an improvement in sensitivity and angular resolution by a factor of ∼10 with respect to previous observations. This allows us to resolve the morphology of the radio jet and to study the different emission mechanisms involved through spectral index maps. We conclude that synchrotron emission in this jet arises from an extended component detected at low frequencies and from the termination points of the jet, where strong shocks against the ambient medium can produce efficient particle acceleration.
Fil: Rodríguez Kamenetzky, Adriana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Instituto de Radioastronomía y Astrofísica; México
Fil: Carrasco Gonzalez, Carlos Eugenio. Instituto de Radioastronomía y Astrofísica; México
Fil: Araudo, Anabella Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Astronomical Institute of the Academy of Sciences; República Checa
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
Fil: Torrelles, José M.. Consejo Superior de Investigaciones Científicas; España
Fil: Rodríguez, Luis F.. Instituto de Radioastronomía y Astrofísica; México
Fil: Anglada, Guillem. Consejo Superior de Investigaciones Científicas; España
Fil: Martí, Josep. Universidad de Jaén; España
Fil: Perucho, Manel. Universidad de Valencia; España
Fil: Valotto, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Materia
ACCELERATION OF PARTICLES
ISM: JETS AND OUTFLOWS
STARS: FORMATION
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:11336/64850
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/64850
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal EmissionRodríguez Kamenetzky, Adriana RaquelCarrasco Gonzalez, Carlos EugenioAraudo, Anabella TeresaRomero, Gustavo EstebanTorrelles, José M.Rodríguez, Luis F.Anglada, GuillemMartí, JosepPerucho, ManelValotto, Carlos AlbertoACCELERATION OF PARTICLESISM: JETS AND OUTFLOWSSTARS: FORMATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Radio emission from protostellar jets is usually dominated by free-free emission from thermal electrons. However, in some cases, it has been proposed that nonthermal emission could also be present. This additional contribution from nonthermal emission has been inferred through negative spectral indices at centimeter wavelengths in some regions of the radio jets. In the case of HH 80-81, one of the most powerful protostellar jets known, linearly polarized emission has also been detected, revealing that the nonthermal emission is of synchrotron nature from a population of relativistic particles in the jet. This result implies that an acceleration mechanism should be taking place in some parts of the jet. Here, we present new high sensitivity and high angular resolution radio observations at several wavelengths (in the 3-20 cm range) of the HH 80-81 radio jet. These new observations represent an improvement in sensitivity and angular resolution by a factor of ∼10 with respect to previous observations. This allows us to resolve the morphology of the radio jet and to study the different emission mechanisms involved through spectral index maps. We conclude that synchrotron emission in this jet arises from an extended component detected at low frequencies and from the termination points of the jet, where strong shocks against the ambient medium can produce efficient particle acceleration.Fil: Rodríguez Kamenetzky, Adriana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Instituto de Radioastronomía y Astrofísica; MéxicoFil: Carrasco Gonzalez, Carlos Eugenio. Instituto de Radioastronomía y Astrofísica; MéxicoFil: Araudo, Anabella Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Astronomical Institute of the Academy of Sciences; República ChecaFil: 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; ArgentinaFil: Torrelles, José M.. Consejo Superior de Investigaciones Científicas; EspañaFil: Rodríguez, Luis F.. Instituto de Radioastronomía y Astrofísica; MéxicoFil: Anglada, Guillem. Consejo Superior de Investigaciones Científicas; EspañaFil: Martí, Josep. Universidad de Jaén; EspañaFil: Perucho, Manel. Universidad de Valencia; EspañaFil: Valotto, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaIOP Publishing2017-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/64850Rodríguez Kamenetzky, Adriana Raquel; Carrasco Gonzalez, Carlos Eugenio; Araudo, Anabella Teresa; Romero, Gustavo Esteban; Torrelles, José M.; et al.; The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission; IOP Publishing; Astrophysical Journal; 851; 1; 12-2017; 1-160004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/reference/doi/10.3847/1538-4357/aa9895info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa9895info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1711.02554info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/1538-4357/aa9895info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:39:15Zoai:ri.conicet.gov.ar:11336/64850instacron: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 10:39:15.755CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission
title The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission
spellingShingle The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission
Rodríguez Kamenetzky, Adriana Raquel
ACCELERATION OF PARTICLES
ISM: JETS AND OUTFLOWS
STARS: FORMATION
title_short The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission
title_full The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission
title_fullStr The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission
title_full_unstemmed The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission
title_sort The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission
dc.creator.none.fl_str_mv Rodríguez Kamenetzky, Adriana Raquel
Carrasco Gonzalez, Carlos Eugenio
Araudo, Anabella Teresa
Romero, Gustavo Esteban
Torrelles, José M.
Rodríguez, Luis F.
Anglada, Guillem
Martí, Josep
Perucho, Manel
Valotto, Carlos Alberto
author Rodríguez Kamenetzky, Adriana Raquel
author_facet Rodríguez Kamenetzky, Adriana Raquel
Carrasco Gonzalez, Carlos Eugenio
Araudo, Anabella Teresa
Romero, Gustavo Esteban
Torrelles, José M.
Rodríguez, Luis F.
Anglada, Guillem
Martí, Josep
Perucho, Manel
Valotto, Carlos Alberto
author_role author
author2 Carrasco Gonzalez, Carlos Eugenio
Araudo, Anabella Teresa
Romero, Gustavo Esteban
Torrelles, José M.
Rodríguez, Luis F.
Anglada, Guillem
Martí, Josep
Perucho, Manel
Valotto, Carlos Alberto
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ACCELERATION OF PARTICLES
ISM: JETS AND OUTFLOWS
STARS: FORMATION
topic ACCELERATION OF PARTICLES
ISM: JETS AND OUTFLOWS
STARS: FORMATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Radio emission from protostellar jets is usually dominated by free-free emission from thermal electrons. However, in some cases, it has been proposed that nonthermal emission could also be present. This additional contribution from nonthermal emission has been inferred through negative spectral indices at centimeter wavelengths in some regions of the radio jets. In the case of HH 80-81, one of the most powerful protostellar jets known, linearly polarized emission has also been detected, revealing that the nonthermal emission is of synchrotron nature from a population of relativistic particles in the jet. This result implies that an acceleration mechanism should be taking place in some parts of the jet. Here, we present new high sensitivity and high angular resolution radio observations at several wavelengths (in the 3-20 cm range) of the HH 80-81 radio jet. These new observations represent an improvement in sensitivity and angular resolution by a factor of ∼10 with respect to previous observations. This allows us to resolve the morphology of the radio jet and to study the different emission mechanisms involved through spectral index maps. We conclude that synchrotron emission in this jet arises from an extended component detected at low frequencies and from the termination points of the jet, where strong shocks against the ambient medium can produce efficient particle acceleration.
Fil: Rodríguez Kamenetzky, Adriana Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Instituto de Radioastronomía y Astrofísica; México
Fil: Carrasco Gonzalez, Carlos Eugenio. Instituto de Radioastronomía y Astrofísica; México
Fil: Araudo, Anabella Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Astronomical Institute of the Academy of Sciences; República Checa
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
Fil: Torrelles, José M.. Consejo Superior de Investigaciones Científicas; España
Fil: Rodríguez, Luis F.. Instituto de Radioastronomía y Astrofísica; México
Fil: Anglada, Guillem. Consejo Superior de Investigaciones Científicas; España
Fil: Martí, Josep. Universidad de Jaén; España
Fil: Perucho, Manel. Universidad de Valencia; España
Fil: Valotto, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
description Radio emission from protostellar jets is usually dominated by free-free emission from thermal electrons. However, in some cases, it has been proposed that nonthermal emission could also be present. This additional contribution from nonthermal emission has been inferred through negative spectral indices at centimeter wavelengths in some regions of the radio jets. In the case of HH 80-81, one of the most powerful protostellar jets known, linearly polarized emission has also been detected, revealing that the nonthermal emission is of synchrotron nature from a population of relativistic particles in the jet. This result implies that an acceleration mechanism should be taking place in some parts of the jet. Here, we present new high sensitivity and high angular resolution radio observations at several wavelengths (in the 3-20 cm range) of the HH 80-81 radio jet. These new observations represent an improvement in sensitivity and angular resolution by a factor of ∼10 with respect to previous observations. This allows us to resolve the morphology of the radio jet and to study the different emission mechanisms involved through spectral index maps. We conclude that synchrotron emission in this jet arises from an extended component detected at low frequencies and from the termination points of the jet, where strong shocks against the ambient medium can produce efficient particle acceleration.
publishDate 2017
dc.date.none.fl_str_mv 2017-12
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/11336/64850
Rodríguez Kamenetzky, Adriana Raquel; Carrasco Gonzalez, Carlos Eugenio; Araudo, Anabella Teresa; Romero, Gustavo Esteban; Torrelles, José M.; et al.; The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission; IOP Publishing; Astrophysical Journal; 851; 1; 12-2017; 1-16
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/64850
identifier_str_mv Rodríguez Kamenetzky, Adriana Raquel; Carrasco Gonzalez, Carlos Eugenio; Araudo, Anabella Teresa; Romero, Gustavo Esteban; Torrelles, José M.; et al.; The Highly Collimated Radio Jet of HH 80-81: Structure and Nonthermal Emission; IOP Publishing; Astrophysical Journal; 851; 1; 12-2017; 1-16
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/reference/doi/10.3847/1538-4357/aa9895
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/aa9895
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1711.02554
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.3847/1538-4357/aa9895
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
application/pdf
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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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