Radio polarization properties for blazars

Autores
Fan, Jun Hui; Yuan, Yu Hai; Liu, Yi; Hua, Tong Xu; Romero, Gustavo Esteban; Zhang, Yong Wei; Su, Jiang Bo; Gupta, Alok G.; Liu, Hua; Huang, Yong; Guo, Qian; Jiang Shui Zhang; Wang, Hong Guang; Zhang, Jing Yi; Tao, Jun
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We used data from the University of Michigan Radio Astronomy Observatory (UMRAO) at three different bands (4.8 GHz, 8 GHz, and 14.5 GHz) to calculate the radio spectral index and the averaged polarization in a sample of 92 flat spectrum radio quasars (FSRQs). We analyzed the relationship between the polarization and other physical parameters for these objects. The results show that: 1) the polarization and its variability at high radio frequencies are higher than those at lower frequencies, 2) the degree of linear polarization is correlated with the radio spectral index, suggesting that the synchrotron mechanism is responsible for the radio emission, 3) the polarization is correlated with the core-dominance parameter for those objects for which this parameter is known, which suggests that relativistic beaming could explain some polarization characteristics of FSRQs, and 4) the polarization and flux density variabilities are correlated. These results are similar to those found for RBLs in our previous work (Fan et al. 2006). However, the distributions in the averaged polarization and the spectral index in FSRQs are different from those in RBLs.
Fil: Fan, Jun Hui. Guangzhou University; China
Fil: Yuan, Yu Hai. Guangzhou University; China
Fil: Liu, Yi. Guangzhou University; China
Fil: Hua, Tong Xu. Guangzhou University; China
Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomia; Argentina
Fil: Zhang, Yong Wei. Guangzhou University; China
Fil: Su, Jiang Bo. Guangzhou University; China
Fil: Gupta, Alok G.. Guangzhou University; China
Fil: Liu, Hua. Guangzhou University; China
Fil: Huang, Yong. Guangzhou University; China
Fil: Guo, Qian. Guangzhou University; China
Fil: Jiang Shui Zhang. Guangzhou University; China
Fil: Wang, Hong Guang. Guangzhou University; China
Fil: Zhang, Jing Yi. Guangzhou University; China
Fil: Tao, Jun. Chinese Academy of Sciences; República de China
Materia
Active Galaxies
Jets
Quasars
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:11336/23526
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/23526
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Radio polarization properties for blazarsFan, Jun HuiYuan, Yu HaiLiu, YiHua, Tong XuRomero, Gustavo EstebanZhang, Yong WeiSu, Jiang BoGupta, Alok G.Liu, HuaHuang, YongGuo, QianJiang Shui ZhangWang, Hong GuangZhang, Jing YiTao, JunActive GalaxiesJetsQuasarshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We used data from the University of Michigan Radio Astronomy Observatory (UMRAO) at three different bands (4.8 GHz, 8 GHz, and 14.5 GHz) to calculate the radio spectral index and the averaged polarization in a sample of 92 flat spectrum radio quasars (FSRQs). We analyzed the relationship between the polarization and other physical parameters for these objects. The results show that: 1) the polarization and its variability at high radio frequencies are higher than those at lower frequencies, 2) the degree of linear polarization is correlated with the radio spectral index, suggesting that the synchrotron mechanism is responsible for the radio emission, 3) the polarization is correlated with the core-dominance parameter for those objects for which this parameter is known, which suggests that relativistic beaming could explain some polarization characteristics of FSRQs, and 4) the polarization and flux density variabilities are correlated. These results are similar to those found for RBLs in our previous work (Fan et al. 2006). However, the distributions in the averaged polarization and the spectral index in FSRQs are different from those in RBLs.Fil: Fan, Jun Hui. Guangzhou University; ChinaFil: Yuan, Yu Hai. Guangzhou University; ChinaFil: Liu, Yi. Guangzhou University; ChinaFil: Hua, Tong Xu. Guangzhou University; ChinaFil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomia; ArgentinaFil: Zhang, Yong Wei. Guangzhou University; ChinaFil: Su, Jiang Bo. Guangzhou University; ChinaFil: Gupta, Alok G.. Guangzhou University; ChinaFil: Liu, Hua. Guangzhou University; ChinaFil: Huang, Yong. Guangzhou University; ChinaFil: Guo, Qian. Guangzhou University; ChinaFil: Jiang Shui Zhang. Guangzhou University; ChinaFil: Wang, Hong Guang. Guangzhou University; ChinaFil: Zhang, Jing Yi. Guangzhou University; ChinaFil: Tao, Jun. Chinese Academy of Sciences; República de ChinaOxford University Press2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/23526Fan, Jun Hui; Yuan, Yu Hai; Liu, Yi; Hua, Tong Xu; Romero, Gustavo Esteban; et al.; Radio polarization properties for blazars; Oxford University Press; Publications Of The Astronomical Society Of Japan; 60; 4; 12-2008; 707-7130004-6264CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2008PASJ...60..707Finfo:eu-repo/semantics/altIdentifier/doi/10.1093/pasj/60.4.707info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/pasj/article-lookup/doi/10.1093/pasj/60.4.707info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:00:50Zoai:ri.conicet.gov.ar:11336/23526instacron: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:34982025-10-15 15:00:51.054CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Radio polarization properties for blazars
title Radio polarization properties for blazars
spellingShingle Radio polarization properties for blazars
Fan, Jun Hui
Active Galaxies
Jets
Quasars
title_short Radio polarization properties for blazars
title_full Radio polarization properties for blazars
title_fullStr Radio polarization properties for blazars
title_full_unstemmed Radio polarization properties for blazars
title_sort Radio polarization properties for blazars
dc.creator.none.fl_str_mv Fan, Jun Hui
Yuan, Yu Hai
Liu, Yi
Hua, Tong Xu
Romero, Gustavo Esteban
Zhang, Yong Wei
Su, Jiang Bo
Gupta, Alok G.
Liu, Hua
Huang, Yong
Guo, Qian
Jiang Shui Zhang
Wang, Hong Guang
Zhang, Jing Yi
Tao, Jun
author Fan, Jun Hui
author_facet Fan, Jun Hui
Yuan, Yu Hai
Liu, Yi
Hua, Tong Xu
Romero, Gustavo Esteban
Zhang, Yong Wei
Su, Jiang Bo
Gupta, Alok G.
Liu, Hua
Huang, Yong
Guo, Qian
Jiang Shui Zhang
Wang, Hong Guang
Zhang, Jing Yi
Tao, Jun
author_role author
author2 Yuan, Yu Hai
Liu, Yi
Hua, Tong Xu
Romero, Gustavo Esteban
Zhang, Yong Wei
Su, Jiang Bo
Gupta, Alok G.
Liu, Hua
Huang, Yong
Guo, Qian
Jiang Shui Zhang
Wang, Hong Guang
Zhang, Jing Yi
Tao, Jun
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Active Galaxies
Jets
Quasars
topic Active Galaxies
Jets
Quasars
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 used data from the University of Michigan Radio Astronomy Observatory (UMRAO) at three different bands (4.8 GHz, 8 GHz, and 14.5 GHz) to calculate the radio spectral index and the averaged polarization in a sample of 92 flat spectrum radio quasars (FSRQs). We analyzed the relationship between the polarization and other physical parameters for these objects. The results show that: 1) the polarization and its variability at high radio frequencies are higher than those at lower frequencies, 2) the degree of linear polarization is correlated with the radio spectral index, suggesting that the synchrotron mechanism is responsible for the radio emission, 3) the polarization is correlated with the core-dominance parameter for those objects for which this parameter is known, which suggests that relativistic beaming could explain some polarization characteristics of FSRQs, and 4) the polarization and flux density variabilities are correlated. These results are similar to those found for RBLs in our previous work (Fan et al. 2006). However, the distributions in the averaged polarization and the spectral index in FSRQs are different from those in RBLs.
Fil: Fan, Jun Hui. Guangzhou University; China
Fil: Yuan, Yu Hai. Guangzhou University; China
Fil: Liu, Yi. Guangzhou University; China
Fil: Hua, Tong Xu. Guangzhou University; China
Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomia; Argentina
Fil: Zhang, Yong Wei. Guangzhou University; China
Fil: Su, Jiang Bo. Guangzhou University; China
Fil: Gupta, Alok G.. Guangzhou University; China
Fil: Liu, Hua. Guangzhou University; China
Fil: Huang, Yong. Guangzhou University; China
Fil: Guo, Qian. Guangzhou University; China
Fil: Jiang Shui Zhang. Guangzhou University; China
Fil: Wang, Hong Guang. Guangzhou University; China
Fil: Zhang, Jing Yi. Guangzhou University; China
Fil: Tao, Jun. Chinese Academy of Sciences; República de China
description We used data from the University of Michigan Radio Astronomy Observatory (UMRAO) at three different bands (4.8 GHz, 8 GHz, and 14.5 GHz) to calculate the radio spectral index and the averaged polarization in a sample of 92 flat spectrum radio quasars (FSRQs). We analyzed the relationship between the polarization and other physical parameters for these objects. The results show that: 1) the polarization and its variability at high radio frequencies are higher than those at lower frequencies, 2) the degree of linear polarization is correlated with the radio spectral index, suggesting that the synchrotron mechanism is responsible for the radio emission, 3) the polarization is correlated with the core-dominance parameter for those objects for which this parameter is known, which suggests that relativistic beaming could explain some polarization characteristics of FSRQs, and 4) the polarization and flux density variabilities are correlated. These results are similar to those found for RBLs in our previous work (Fan et al. 2006). However, the distributions in the averaged polarization and the spectral index in FSRQs are different from those in RBLs.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
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/11336/23526
Fan, Jun Hui; Yuan, Yu Hai; Liu, Yi; Hua, Tong Xu; Romero, Gustavo Esteban; et al.; Radio polarization properties for blazars; Oxford University Press; Publications Of The Astronomical Society Of Japan; 60; 4; 12-2008; 707-713
0004-6264
CONICET Digital
CONICET
url http://hdl.handle.net/11336/23526
identifier_str_mv Fan, Jun Hui; Yuan, Yu Hai; Liu, Yi; Hua, Tong Xu; Romero, Gustavo Esteban; et al.; Radio polarization properties for blazars; Oxford University Press; Publications Of The Astronomical Society Of Japan; 60; 4; 12-2008; 707-713
0004-6264
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2008PASJ...60..707F
info:eu-repo/semantics/altIdentifier/doi/10.1093/pasj/60.4.707
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/pasj/article-lookup/doi/10.1093/pasj/60.4.707
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 Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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
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score 13.22299

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