Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source

The High Energy Gamma Ray Astronomy (HEGRA) Cerenkov telescope array group recently reported a steady and extended unidentified TeV gamma-ray source lying at the outskirts of Cygnus OB2. This is the most massive stellar association known in the Galaxy, estimated to contain ~2600 OB-type members alon...

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Autores: Butt, Yousaf M., Benaglia, Paula, Combi, Jorge Ariel, Corcoran, Michael, Dame, Thomas M., Drake, Jeremy, Kaufman Bernadó, María Marina, Milne, Peter, Miniati, Francesco, Pohl, Martin, Reimer, Olaf, Romero, Gustavo Esteban, Rupen, Michael
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2003
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/29925
Acesso em linha:http://hdl.handle.net/11336/29925
Access Level:acceso abierto
Palavra-chave:gamma-ray sources
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
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network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source
title Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source
spellingShingle Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source
Butt, Yousaf M.
gamma-ray sources
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
title_short Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source
title_full Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source
title_fullStr Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source
title_full_unstemmed Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source
title_sort Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source
dc.creator.none.fl_str_mv Butt, Yousaf M.
Benaglia, Paula
Combi, Jorge Ariel
Corcoran, Michael
Dame, Thomas M.
Drake, Jeremy
Kaufman Bernadó, María Marina
Milne, Peter
Miniati, Francesco
Pohl, Martin
Reimer, Olaf
Romero, Gustavo Esteban
Rupen, Michael
author Butt, Yousaf M.
author_facet Butt, Yousaf M.
Benaglia, Paula
Combi, Jorge Ariel
Corcoran, Michael
Dame, Thomas M.
Drake, Jeremy
Kaufman Bernadó, María Marina
Milne, Peter
Miniati, Francesco
Pohl, Martin
Reimer, Olaf
Romero, Gustavo Esteban
Rupen, Michael
author_role author
author2 Benaglia, Paula
Combi, Jorge Ariel
Corcoran, Michael
Dame, Thomas M.
Drake, Jeremy
Kaufman Bernadó, María Marina
Milne, Peter
Miniati, Francesco
Pohl, Martin
Reimer, Olaf
Romero, Gustavo Esteban
Rupen, Michael
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv gamma-ray sources
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
topic gamma-ray sources
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
description The High Energy Gamma Ray Astronomy (HEGRA) Cerenkov telescope array group recently reported a steady and extended unidentified TeV gamma-ray source lying at the outskirts of Cygnus OB2. This is the most massive stellar association known in the Galaxy, estimated to contain ~2600 OB-type members alone. It has been previously argued that the large-scale shocks and turbulence induced by the multiple interacting supersonic winds from the many young stars in such associations may play a role in accelerating Galactic cosmic rays. Indeed, Cyg OB2 also coincides with the nonvariable MeV-GeV range unidentified EGRET source, 3EG 2033+4118. We report on the near-simultaneous follow-up observations of the extended TeV source region with the Chandra X-Ray Observatory and the Very Large Array radio telescope, obtained in order to explore this possibility. Analysis of the CO, H I, and IRAS 100 μm emissions shows that the TeV source region coincides with an outlying subgroup of powerful OB stars that have evacuated or destroyed much of the ambient atomic, molecular, and dust material and that may be related to the very high energy emissions. An interesting supernova-remnant-like structure is also revealed near the TeV source region in the CO, H I, and radio emission maps. Applying a numerical simulation that accurately tracks the radio to gamma-ray emission from primary hadrons as well as primary and secondary e+/-, we find that the broadband spectrum of the TeV source region favors a predominantly nucleonic-rather than electronic-origin for the high-energy flux, although deeper X-ray and radio observations will help confirm this. A very reasonable, ~0.1%, conversion efficiency of Cyg OB2's extreme stellar wind mechanical luminosity to nucleonic acceleration to ~PeV (1015 eV) energies is sufficient to explain the multifrequency emissions.
publishDate 2003
dc.date.none.fl_str_mv 2003-12
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/11336/29925
Butt, Yousaf M.; Benaglia, Paula; Combi, Jorge Ariel; Corcoran, Michael; Dame, Thomas M.; et al.; Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source; IOP Publishing; Astrophysical Journal; 597; 12-2003; 494-512
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/29925
identifier_str_mv Butt, Yousaf M.; Benaglia, Paula; Combi, Jorge Ariel; Corcoran, Michael; Dame, Thomas M.; et al.; Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source; IOP Publishing; Astrophysical Journal; 597; 12-2003; 494-512
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1086/378121
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1086/378121/meta
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
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
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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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spelling Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray sourceButt, Yousaf M.Benaglia, PaulaCombi, Jorge ArielCorcoran, MichaelDame, Thomas M.Drake, JeremyKaufman Bernadó, María MarinaMilne, PeterMiniati, FrancescoPohl, MartinReimer, OlafRomero, Gustavo EstebanRupen, Michaelgamma-ray sourceshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The High Energy Gamma Ray Astronomy (HEGRA) Cerenkov telescope array group recently reported a steady and extended unidentified TeV gamma-ray source lying at the outskirts of Cygnus OB2. This is the most massive stellar association known in the Galaxy, estimated to contain ~2600 OB-type members alone. It has been previously argued that the large-scale shocks and turbulence induced by the multiple interacting supersonic winds from the many young stars in such associations may play a role in accelerating Galactic cosmic rays. Indeed, Cyg OB2 also coincides with the nonvariable MeV-GeV range unidentified EGRET source, 3EG 2033+4118. We report on the near-simultaneous follow-up observations of the extended TeV source region with the Chandra X-Ray Observatory and the Very Large Array radio telescope, obtained in order to explore this possibility. Analysis of the CO, H I, and IRAS 100 μm emissions shows that the TeV source region coincides with an outlying subgroup of powerful OB stars that have evacuated or destroyed much of the ambient atomic, molecular, and dust material and that may be related to the very high energy emissions. An interesting supernova-remnant-like structure is also revealed near the TeV source region in the CO, H I, and radio emission maps. Applying a numerical simulation that accurately tracks the radio to gamma-ray emission from primary hadrons as well as primary and secondary e+/-, we find that the broadband spectrum of the TeV source region favors a predominantly nucleonic-rather than electronic-origin for the high-energy flux, although deeper X-ray and radio observations will help confirm this. A very reasonable, ~0.1%, conversion efficiency of Cyg OB2's extreme stellar wind mechanical luminosity to nucleonic acceleration to ~PeV (1015 eV) energies is sufficient to explain the multifrequency emissions.Fil: Butt, Yousaf M.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: 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: 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; ArgentinaFil: Corcoran, Michael. Universities Space Research Association; Estados UnidosFil: Dame, Thomas M.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Drake, Jeremy. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Kaufman Bernadó, María Marina. 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: Milne, Peter. Los Alamos National Laboratory; Estados UnidosFil: Miniati, Francesco. Max Planck Institut für Astrophysik; AlemaniaFil: Pohl, Martin. National Radio Astronomy Observatory; Estados UnidosFil: Reimer, Olaf. Ruhr-Universität Bochum; AlemaniaFil: 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: Rupen, Michael. National Radio Astronomy Observatory; Estados UnidosIOP Publishing2003-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/29925Butt, Yousaf M.; Benaglia, Paula; Combi, Jorge Ariel; Corcoran, Michael; Dame, Thomas M.; et al.; Chandra/Very Large Array follow-Up of TeV J2032+4131, the only unidentified TeV gamma-ray source; IOP Publishing; Astrophysical Journal; 597; 12-2003; 494-5120004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1086/378121info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1086/378121/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T14:17:19Zoai:ri.conicet.gov.ar:11336/29925instacron: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:34982024-05-08 14:17:19.42CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
score 15.812429

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