Extreme photopolarimetric behaviour of the blazar AO 0235+164

Autores
Cellone, Sergio Aldo; Romero, Gustavo Esteban; Combi, Jorge Ariel; Martí, J.
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present optical photopolarimetric observations with high temporal resolution of the blazar AO 0235+164. Our data, the first to test the photopolarimetric behaviour of this object at very short time-scales, show significant micro-variability in total flux, colour index, linear polarization degree and position angle. Strong inter-night variations are also detected for these parameters. Although no correlation between colour index and total flux was found, our data seem to support the general bluer-when-brighter trend already known for this object. The polarization degree, in turn, shows no correlation with total flux, but a clear trend in the sense that colour index is redder (the spectrum is softer) when the measured polarization is higher.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
BL Lacertae objects: individual: AO 0235+164
Galaxies: active
Galaxies: photometry
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:10915/83157
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/83157
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Extreme photopolarimetric behaviour of the blazar AO 0235+164Cellone, Sergio AldoRomero, Gustavo EstebanCombi, Jorge ArielMartí, J.Ciencias AstronómicasBL Lacertae objects: individual: AO 0235+164Galaxies: activeGalaxies: photometryWe present optical photopolarimetric observations with high temporal resolution of the blazar AO 0235+164. Our data, the first to test the photopolarimetric behaviour of this object at very short time-scales, show significant micro-variability in total flux, colour index, linear polarization degree and position angle. Strong inter-night variations are also detected for these parameters. Although no correlation between colour index and total flux was found, our data seem to support the general bluer-when-brighter trend already known for this object. The polarization degree, in turn, shows no correlation with total flux, but a clear trend in the sense that colour index is redder (the spectrum is softer) when the measured polarization is higher.Facultad de Ciencias Astronómicas y Geofísicas2007info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf60-64http://sedici.unlp.edu.ar/handle/10915/83157enginfo:eu-repo/semantics/altIdentifier/issn/1745-3933info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1745-3933.2007.00366.xinfo: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:UNLP2025-09-29T11:15:41Zoai:sedici.unlp.edu.ar:10915/83157Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:42.079SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Extreme photopolarimetric behaviour of the blazar AO 0235+164
title Extreme photopolarimetric behaviour of the blazar AO 0235+164
spellingShingle Extreme photopolarimetric behaviour of the blazar AO 0235+164
Cellone, Sergio Aldo
Ciencias Astronómicas
BL Lacertae objects: individual: AO 0235+164
Galaxies: active
Galaxies: photometry
title_short Extreme photopolarimetric behaviour of the blazar AO 0235+164
title_full Extreme photopolarimetric behaviour of the blazar AO 0235+164
title_fullStr Extreme photopolarimetric behaviour of the blazar AO 0235+164
title_full_unstemmed Extreme photopolarimetric behaviour of the blazar AO 0235+164
title_sort Extreme photopolarimetric behaviour of the blazar AO 0235+164
dc.creator.none.fl_str_mv Cellone, Sergio Aldo
Romero, Gustavo Esteban
Combi, Jorge Ariel
Martí, J.
author Cellone, Sergio Aldo
author_facet Cellone, Sergio Aldo
Romero, Gustavo Esteban
Combi, Jorge Ariel
Martí, J.
author_role author
author2 Romero, Gustavo Esteban
Combi, Jorge Ariel
Martí, J.
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
BL Lacertae objects: individual: AO 0235+164
Galaxies: active
Galaxies: photometry
topic Ciencias Astronómicas
BL Lacertae objects: individual: AO 0235+164
Galaxies: active
Galaxies: photometry
dc.description.none.fl_txt_mv We present optical photopolarimetric observations with high temporal resolution of the blazar AO 0235+164. Our data, the first to test the photopolarimetric behaviour of this object at very short time-scales, show significant micro-variability in total flux, colour index, linear polarization degree and position angle. Strong inter-night variations are also detected for these parameters. Although no correlation between colour index and total flux was found, our data seem to support the general bluer-when-brighter trend already known for this object. The polarization degree, in turn, shows no correlation with total flux, but a clear trend in the sense that colour index is redder (the spectrum is softer) when the measured polarization is higher.
Facultad de Ciencias Astronómicas y Geofísicas
description We present optical photopolarimetric observations with high temporal resolution of the blazar AO 0235+164. Our data, the first to test the photopolarimetric behaviour of this object at very short time-scales, show significant micro-variability in total flux, colour index, linear polarization degree and position angle. Strong inter-night variations are also detected for these parameters. Although no correlation between colour index and total flux was found, our data seem to support the general bluer-when-brighter trend already known for this object. The polarization degree, in turn, shows no correlation with total flux, but a clear trend in the sense that colour index is redder (the spectrum is softer) when the measured polarization is higher.
publishDate 2007
dc.date.none.fl_str_mv 2007
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/10915/83157
url http://sedici.unlp.edu.ar/handle/10915/83157
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1745-3933
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1745-3933.2007.00366.x
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
60-64
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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