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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/23526
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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 Técnicas2025-09-29T10:04:08Zoai: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:34982025-09-29 10:04:08.783CONICET 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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1844613865561653248 |
score |
13.070432 |