γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection

Autores
Filócomo, Agostina; Albacete Colombo, Juan Facundo; Mestre, E.; Pellizza González, Leonardo Javier; Combi, Jorge Ariel
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
NGC 2071 is a star-forming region that overlaps with three γ-ray sources detected by the Fermi Space Telescope. We propose that strong flare activity in T Tauri stars could produce γ-ray emission in a way that makes them a counterpart to some unidentified sources detected by the Large Area Telescope aboard the Fermi satellite. We have performed a spectral and temporal analysis for two Fermi data sets: the first 2 yr and the entire 14 yr of observations. We have found that the γ-ray source is detectable at 3.2σ above the background at energies above 100 GeV during the first 2 yr of observation. The analysis of the expected frequency of the highest energy flares occurring in T Tauri stars is consistent with our estimate. In addition, we have determined the minimum energy of the flare that would produce γ-ray emission, which is ~5 × 1037 erg. This agreement becomes a hard observational constraint supporting previous hypotheses about rare flares as the origin of unidentified γ-ray sources in star-forming regions.
Fil: Filócomo, Agostina. Universidad Nacional del Comahue; Argentina
Fil: Albacete Colombo, Juan Facundo. Universidad Nacional del Comahue; Argentina
Fil: Mestre, E.. Universidad de Jaén; España
Fil: Pellizza González, Leonardo Javier. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Combi, Jorge Ariel. 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
Materia
stars: flare
stars: variables: T Tauri
Herbig Ae/Be
gamma-rays: stars
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:11336/218004
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/218004
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connectionFilócomo, AgostinaAlbacete Colombo, Juan FacundoMestre, E.Pellizza González, Leonardo JavierCombi, Jorge Arielstars: flarestars: variables: T TauriHerbig Ae/Begamma-rays: starshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1NGC 2071 is a star-forming region that overlaps with three γ-ray sources detected by the Fermi Space Telescope. We propose that strong flare activity in T Tauri stars could produce γ-ray emission in a way that makes them a counterpart to some unidentified sources detected by the Large Area Telescope aboard the Fermi satellite. We have performed a spectral and temporal analysis for two Fermi data sets: the first 2 yr and the entire 14 yr of observations. We have found that the γ-ray source is detectable at 3.2σ above the background at energies above 100 GeV during the first 2 yr of observation. The analysis of the expected frequency of the highest energy flares occurring in T Tauri stars is consistent with our estimate. In addition, we have determined the minimum energy of the flare that would produce γ-ray emission, which is ~5 × 1037 erg. This agreement becomes a hard observational constraint supporting previous hypotheses about rare flares as the origin of unidentified γ-ray sources in star-forming regions.Fil: Filócomo, Agostina. Universidad Nacional del Comahue; ArgentinaFil: Albacete Colombo, Juan Facundo. Universidad Nacional del Comahue; ArgentinaFil: Mestre, E.. Universidad de Jaén; EspañaFil: Pellizza González, Leonardo Javier. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Combi, Jorge Ariel. 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; ArgentinaWiley Blackwell Publishing, Inc2023-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/218004Filócomo, Agostina; Albacete Colombo, Juan Facundo; Mestre, E.; Pellizza González, Leonardo Javier; Combi, Jorge Ariel; γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 525; 2; 10-2023; 1726-17300035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/525/2/1726/7246694info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stad2029info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:28:35Zoai:ri.conicet.gov.ar:11336/218004instacron: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 10:28:35.366CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection
title γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection
spellingShingle γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection
Filócomo, Agostina
stars: flare
stars: variables: T Tauri
Herbig Ae/Be
gamma-rays: stars
title_short γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection
title_full γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection
title_fullStr γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection
title_full_unstemmed γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection
title_sort γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection
dc.creator.none.fl_str_mv Filócomo, Agostina
Albacete Colombo, Juan Facundo
Mestre, E.
Pellizza González, Leonardo Javier
Combi, Jorge Ariel
author Filócomo, Agostina
author_facet Filócomo, Agostina
Albacete Colombo, Juan Facundo
Mestre, E.
Pellizza González, Leonardo Javier
Combi, Jorge Ariel
author_role author
author2 Albacete Colombo, Juan Facundo
Mestre, E.
Pellizza González, Leonardo Javier
Combi, Jorge Ariel
author2_role author
author
author
author
dc.subject.none.fl_str_mv stars: flare
stars: variables: T Tauri
Herbig Ae/Be
gamma-rays: stars
topic stars: flare
stars: variables: T Tauri
Herbig Ae/Be
gamma-rays: stars
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv NGC 2071 is a star-forming region that overlaps with three γ-ray sources detected by the Fermi Space Telescope. We propose that strong flare activity in T Tauri stars could produce γ-ray emission in a way that makes them a counterpart to some unidentified sources detected by the Large Area Telescope aboard the Fermi satellite. We have performed a spectral and temporal analysis for two Fermi data sets: the first 2 yr and the entire 14 yr of observations. We have found that the γ-ray source is detectable at 3.2σ above the background at energies above 100 GeV during the first 2 yr of observation. The analysis of the expected frequency of the highest energy flares occurring in T Tauri stars is consistent with our estimate. In addition, we have determined the minimum energy of the flare that would produce γ-ray emission, which is ~5 × 1037 erg. This agreement becomes a hard observational constraint supporting previous hypotheses about rare flares as the origin of unidentified γ-ray sources in star-forming regions.
Fil: Filócomo, Agostina. Universidad Nacional del Comahue; Argentina
Fil: Albacete Colombo, Juan Facundo. Universidad Nacional del Comahue; Argentina
Fil: Mestre, E.. Universidad de Jaén; España
Fil: Pellizza González, Leonardo Javier. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Combi, Jorge Ariel. 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
description NGC 2071 is a star-forming region that overlaps with three γ-ray sources detected by the Fermi Space Telescope. We propose that strong flare activity in T Tauri stars could produce γ-ray emission in a way that makes them a counterpart to some unidentified sources detected by the Large Area Telescope aboard the Fermi satellite. We have performed a spectral and temporal analysis for two Fermi data sets: the first 2 yr and the entire 14 yr of observations. We have found that the γ-ray source is detectable at 3.2σ above the background at energies above 100 GeV during the first 2 yr of observation. The analysis of the expected frequency of the highest energy flares occurring in T Tauri stars is consistent with our estimate. In addition, we have determined the minimum energy of the flare that would produce γ-ray emission, which is ~5 × 1037 erg. This agreement becomes a hard observational constraint supporting previous hypotheses about rare flares as the origin of unidentified γ-ray sources in star-forming regions.
publishDate 2023
dc.date.none.fl_str_mv 2023-10
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/11336/218004
Filócomo, Agostina; Albacete Colombo, Juan Facundo; Mestre, E.; Pellizza González, Leonardo Javier; Combi, Jorge Ariel; γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 525; 2; 10-2023; 1726-1730
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/218004
identifier_str_mv Filócomo, Agostina; Albacete Colombo, Juan Facundo; Mestre, E.; Pellizza González, Leonardo Javier; Combi, Jorge Ariel; γ-ray detection from occasional flares in T Tauri stars of NGC 2071. I: observational connection; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 525; 2; 10-2023; 1726-1730
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/525/2/1726/7246694
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stad2029
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_ 1844614289709596672
score 13.070432

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