Optical polarimetric observations of the microquasar LS 5039

Autores
Combi, Jorge Ariel; Cellone, Sergio Aldo; Martí, J.; Ribó, M.; Mirabel Miquele, Igor Félix; Casares, J.
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present the first optical polarimetric observations of the runaway microquasar LS 5039. Our results reveal the presence of a large amount (∼5%) of polarized emission towards this binary system. By combining polarimetric and spectroscopic observations of some stars in the field together with available statistical information on the galactic interstellar polarization of the region, we have estimated and subtracted the contribution of the interstellar polarization in this direction. As a result, we obtain an intrinsic polarization of ∼3% for the object, much higher than what would be expected from jet emission in the optical domain. We suggest that the polarized light originates by electron Thomson scattering in the stellar envelope of the companion star. This allows us to constrain the size of the region where the polarized emission originates, as well as estimating the scattering electronic density and the wind velocity at such distance.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Binaries
Binaries - Stars
General - Polarization
Individual
LS 5039 - X-rays
Stars
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/84640
Acceder
id SEDICI_eda031382c2c654bb777bcdfe95d4c73
oai_identifier_str oai:sedici.unlp.edu.ar:10915/84640
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Optical polarimetric observations of the microquasar LS 5039Combi, Jorge ArielCellone, Sergio AldoMartí, J.Ribó, M.Mirabel Miquele, Igor FélixCasares, J.Ciencias AstronómicasBinariesBinaries - StarsGeneral - PolarizationIndividualLS 5039 - X-raysStarsWe present the first optical polarimetric observations of the runaway microquasar LS 5039. Our results reveal the presence of a large amount (∼5%) of polarized emission towards this binary system. By combining polarimetric and spectroscopic observations of some stars in the field together with available statistical information on the galactic interstellar polarization of the region, we have estimated and subtracted the contribution of the interstellar polarization in this direction. As a result, we obtain an intrinsic polarization of ∼3% for the object, much higher than what would be expected from jet emission in the optical domain. We suggest that the polarized light originates by electron Thomson scattering in the stellar envelope of the companion star. This allows us to constrain the size of the region where the polarized emission originates, as well as estimating the scattering electronic density and the wind velocity at such distance.Facultad de Ciencias Astronómicas y Geofísicas2004info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf959-963http://sedici.unlp.edu.ar/handle/10915/84640enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20041433info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-11-05T12:55:34Zoai:sedici.unlp.edu.ar:10915/84640Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-11-05 12:55:35.042SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Optical polarimetric observations of the microquasar LS 5039
title Optical polarimetric observations of the microquasar LS 5039
spellingShingle Optical polarimetric observations of the microquasar LS 5039
Combi, Jorge Ariel
Ciencias Astronómicas
Binaries
Binaries - Stars
General - Polarization
Individual
LS 5039 - X-rays
Stars
title_short Optical polarimetric observations of the microquasar LS 5039
title_full Optical polarimetric observations of the microquasar LS 5039
title_fullStr Optical polarimetric observations of the microquasar LS 5039
title_full_unstemmed Optical polarimetric observations of the microquasar LS 5039
title_sort Optical polarimetric observations of the microquasar LS 5039
dc.creator.none.fl_str_mv Combi, Jorge Ariel
Cellone, Sergio Aldo
Martí, J.
Ribó, M.
Mirabel Miquele, Igor Félix
Casares, J.
author Combi, Jorge Ariel
author_facet Combi, Jorge Ariel
Cellone, Sergio Aldo
Martí, J.
Ribó, M.
Mirabel Miquele, Igor Félix
Casares, J.
author_role author
author2 Cellone, Sergio Aldo
Martí, J.
Ribó, M.
Mirabel Miquele, Igor Félix
Casares, J.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Binaries
Binaries - Stars
General - Polarization
Individual
LS 5039 - X-rays
Stars
topic Ciencias Astronómicas
Binaries
Binaries - Stars
General - Polarization
Individual
LS 5039 - X-rays
Stars
dc.description.none.fl_txt_mv We present the first optical polarimetric observations of the runaway microquasar LS 5039. Our results reveal the presence of a large amount (∼5%) of polarized emission towards this binary system. By combining polarimetric and spectroscopic observations of some stars in the field together with available statistical information on the galactic interstellar polarization of the region, we have estimated and subtracted the contribution of the interstellar polarization in this direction. As a result, we obtain an intrinsic polarization of ∼3% for the object, much higher than what would be expected from jet emission in the optical domain. We suggest that the polarized light originates by electron Thomson scattering in the stellar envelope of the companion star. This allows us to constrain the size of the region where the polarized emission originates, as well as estimating the scattering electronic density and the wind velocity at such distance.
Facultad de Ciencias Astronómicas y Geofísicas
description We present the first optical polarimetric observations of the runaway microquasar LS 5039. Our results reveal the presence of a large amount (∼5%) of polarized emission towards this binary system. By combining polarimetric and spectroscopic observations of some stars in the field together with available statistical information on the galactic interstellar polarization of the region, we have estimated and subtracted the contribution of the interstellar polarization in this direction. As a result, we obtain an intrinsic polarization of ∼3% for the object, much higher than what would be expected from jet emission in the optical domain. We suggest that the polarized light originates by electron Thomson scattering in the stellar envelope of the companion star. This allows us to constrain the size of the region where the polarized emission originates, as well as estimating the scattering electronic density and the wind velocity at such distance.
publishDate 2004
dc.date.none.fl_str_mv 2004
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/84640
url http://sedici.unlp.edu.ar/handle/10915/84640
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0004-6361
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20041433
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
959-963
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.087074

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