High-sensitivity radio study of the non-thermal stellar bow shock EB27

Autores
Benaglia, Paula; del Palacio, Santiago; Hales, Christopher; Colazo, Marcelo Eduardo Antonio
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a deep radio-polarimetric observation of the stellar bow shock EB27 associated with the massive star BD+43○3654. This is the only stellar bow shock confirmed to have non-thermal radio emission. We used the Jansky Very Large Array in S band (2-4 GHz) to test whether this synchrotron emission is polarized. The unprecedented sensitivity achieved allowed us to map even the fainter regions of the bow shock, revealing that the more diffuse emission is steeper and the bow shock brighter than previously reported. No linear polarization is detected in the bow shock above 0.5 per cent, although we detected polarized emission from two southern sources, probably extragalactic in nature. We modelled the intensity and morphology of the radio emission to better constrain the magnetic field and injected power in relativistic electrons. Finally, we derived a set of more precise parameters for the system EB27-BD+43○3654 using Gaia Early Data Release 3, including the spatial velocity. The new trajectory, back in time, intersects the core of the Cyg OB2 association.
Fil: Benaglia, Paula. 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: Hales, Christopher. National Radio Astronomy Observatory; Estados Unidos
Fil: Colazo, Marcelo Eduardo Antonio. Comision Nacional de Actividades Espaciales; Argentina
Materia
acceleration of particles
radiation mechanisms: non-thermal
stars: massive
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:11336/138357
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/138357
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling High-sensitivity radio study of the non-thermal stellar bow shock EB27Benaglia, Pauladel Palacio, SantiagoHales, ChristopherColazo, Marcelo Eduardo Antonioacceleration of particlesradiation mechanisms: non-thermalstars: massivehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a deep radio-polarimetric observation of the stellar bow shock EB27 associated with the massive star BD+43○3654. This is the only stellar bow shock confirmed to have non-thermal radio emission. We used the Jansky Very Large Array in S band (2-4 GHz) to test whether this synchrotron emission is polarized. The unprecedented sensitivity achieved allowed us to map even the fainter regions of the bow shock, revealing that the more diffuse emission is steeper and the bow shock brighter than previously reported. No linear polarization is detected in the bow shock above 0.5 per cent, although we detected polarized emission from two southern sources, probably extragalactic in nature. We modelled the intensity and morphology of the radio emission to better constrain the magnetic field and injected power in relativistic electrons. Finally, we derived a set of more precise parameters for the system EB27-BD+43○3654 using Gaia Early Data Release 3, including the spatial velocity. The new trajectory, back in time, intersects the core of the Cyg OB2 association.Fil: Benaglia, Paula. 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: Hales, Christopher. National Radio Astronomy Observatory; Estados UnidosFil: Colazo, Marcelo Eduardo Antonio. Comision Nacional de Actividades Espaciales; ArgentinaWiley Blackwell Publishing, Inc2021-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/138357Benaglia, Paula; del Palacio, Santiago; Hales, Christopher; Colazo, Marcelo Eduardo Antonio; High-sensitivity radio study of the non-thermal stellar bow shock EB27; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 503; 2; 5-2021; 2514-25220035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/503/2/2514/6166769info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stab662info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:50:05Zoai:ri.conicet.gov.ar:11336/138357instacron: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 09:50:05.89CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv High-sensitivity radio study of the non-thermal stellar bow shock EB27
title High-sensitivity radio study of the non-thermal stellar bow shock EB27
spellingShingle High-sensitivity radio study of the non-thermal stellar bow shock EB27
Benaglia, Paula
acceleration of particles
radiation mechanisms: non-thermal
stars: massive
title_short High-sensitivity radio study of the non-thermal stellar bow shock EB27
title_full High-sensitivity radio study of the non-thermal stellar bow shock EB27
title_fullStr High-sensitivity radio study of the non-thermal stellar bow shock EB27
title_full_unstemmed High-sensitivity radio study of the non-thermal stellar bow shock EB27
title_sort High-sensitivity radio study of the non-thermal stellar bow shock EB27
dc.creator.none.fl_str_mv Benaglia, Paula
del Palacio, Santiago
Hales, Christopher
Colazo, Marcelo Eduardo Antonio
author Benaglia, Paula
author_facet Benaglia, Paula
del Palacio, Santiago
Hales, Christopher
Colazo, Marcelo Eduardo Antonio
author_role author
author2 del Palacio, Santiago
Hales, Christopher
Colazo, Marcelo Eduardo Antonio
author2_role author
author
author
dc.subject.none.fl_str_mv acceleration of particles
radiation mechanisms: non-thermal
stars: massive
topic acceleration of particles
radiation mechanisms: non-thermal
stars: massive
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 deep radio-polarimetric observation of the stellar bow shock EB27 associated with the massive star BD+43○3654. This is the only stellar bow shock confirmed to have non-thermal radio emission. We used the Jansky Very Large Array in S band (2-4 GHz) to test whether this synchrotron emission is polarized. The unprecedented sensitivity achieved allowed us to map even the fainter regions of the bow shock, revealing that the more diffuse emission is steeper and the bow shock brighter than previously reported. No linear polarization is detected in the bow shock above 0.5 per cent, although we detected polarized emission from two southern sources, probably extragalactic in nature. We modelled the intensity and morphology of the radio emission to better constrain the magnetic field and injected power in relativistic electrons. Finally, we derived a set of more precise parameters for the system EB27-BD+43○3654 using Gaia Early Data Release 3, including the spatial velocity. The new trajectory, back in time, intersects the core of the Cyg OB2 association.
Fil: Benaglia, Paula. 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: Hales, Christopher. National Radio Astronomy Observatory; Estados Unidos
Fil: Colazo, Marcelo Eduardo Antonio. Comision Nacional de Actividades Espaciales; Argentina
description We present a deep radio-polarimetric observation of the stellar bow shock EB27 associated with the massive star BD+43○3654. This is the only stellar bow shock confirmed to have non-thermal radio emission. We used the Jansky Very Large Array in S band (2-4 GHz) to test whether this synchrotron emission is polarized. The unprecedented sensitivity achieved allowed us to map even the fainter regions of the bow shock, revealing that the more diffuse emission is steeper and the bow shock brighter than previously reported. No linear polarization is detected in the bow shock above 0.5 per cent, although we detected polarized emission from two southern sources, probably extragalactic in nature. We modelled the intensity and morphology of the radio emission to better constrain the magnetic field and injected power in relativistic electrons. Finally, we derived a set of more precise parameters for the system EB27-BD+43○3654 using Gaia Early Data Release 3, including the spatial velocity. The new trajectory, back in time, intersects the core of the Cyg OB2 association.
publishDate 2021
dc.date.none.fl_str_mv 2021-05
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/11336/138357
Benaglia, Paula; del Palacio, Santiago; Hales, Christopher; Colazo, Marcelo Eduardo Antonio; High-sensitivity radio study of the non-thermal stellar bow shock EB27; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 503; 2; 5-2021; 2514-2522
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/138357
identifier_str_mv Benaglia, Paula; del Palacio, Santiago; Hales, Christopher; Colazo, Marcelo Eduardo Antonio; High-sensitivity radio study of the non-thermal stellar bow shock EB27; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 503; 2; 5-2021; 2514-2522
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/503/2/2514/6166769
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stab662
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
_version_ 1844613546386653184
score 13.069144

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