Optical Polarimetry and Radio Observations of PKS1510-089 between 2009 and 2013

Galaxies

Pedro P. B. Beaklini¹  Zulema Abraham¹  Tânia P. Dominici² 

[1] Instituto de Astronomia, Geofísica e Ciências Atmosfericas, Universidade de São Paulo, Rua do Matão 1226, 05508-090 São Paulo, Brazil;Museu de Astronomia e Ciências Afins, Ministério da Ciência, Tecnologia, Inovações e Comunicações (MAST/MCTIC), Rua General Bruce 586, Bairro Imperial de São Cristovão, 20921-030 Rio de Janeiro, Brazil;

关键词: Blazars;    PKS1510-089;    jets;   

DOI  :  10.3390/galaxies6010018

来源: DOAJ

【 摘 要 】

The blazar PKS 1510-089 has shown intense activity atγ -rays in the recent years. In this work, we discussed the results of our 7 mm radio continuum and optical polarimetric monitoring between 2009 and 2013. In 2009, we detected a large rotation of the optical polarization angle that we attributed to the ejection of new polarized components. In 2011, after the occurrence of severalγ -rays flares, the radio emission started to increase, reaching values never observed before. We interpreted this increase as the consequence of the superposition of several new components ejected during theγ -rays flares. A delay was measured between the maximum in the radio emission and theγ -ray flares, which favors models involving expanding components like the shock-in-jet models. Finally, we tried to understand the polarization angle variability behavior filling the gaps in our observations with published results of other polarimetric campaigns, and using the criterion of minimum variation in the polarization angle between successive observations to solve the 180° multiplicity.

【 授权许可】

Unknown