Multiwavelength flaring activity of PKS1510-089
arXiv:1707.05795 · doi:10.1051/0004-6361/201731118
Abstract
Aims: In this work, we analyse the multiwavelength brightness variations and flaring activity of FSRQ PKS1510-089, aiming to constrain the position of the emission sources. Methods: We report 7 mm (43 GHz) radio and R-band polarimetric observations of PKS1510-089. The radio observations were performed at the Itapetinga Radio Observatory, while the polarimetric data were obtained at the Pico dos Dias Observatory. The 7 mm observations cover the period between 2011 and 2013, while the optical polarimetric observations were made between 2009 and 2012. Results: At 7 mm, we detected a correlation between four radio and -ray flares with a delay of about 54 days between them; the higher frequency counterpart occurred first. Using optical polarimetry, we detected a large variation in polarization angle (PA) within two days associated with the beginning of a -ray flare. Complementing our data with other data obtained in the literature, we show that PA presented rotations associated with the occurrence of flares. Conclusions: Our results can be explained by a shock-in-jet model, in which a new component is formed in the compact core producing an optical and/or -ray flare, propagates along the jet, and after some time becomes optically thin and is detected as a flare at radio frequencies. The variability in the polarimetric parameters can also be reproduced; we can explain large variation in both PA and polarization degree (PD), in only one of them, or in neither, depending on the differences in PA and PD between the jet and the new component.
Accepted for publication in Astronomy & Astrophysics (A&A), 13 pages, 10 figures, 3 tables
References in corpus (15)
- Probing the Inner Jet of the Quasar PKS 1510-089 with Multi-waveband Monitoring during Strong Gamma-ray Activity
- Bright AGN Source List from the First Three Months of the Fermi Large Area Telescope All-Sky Survey
- MOJAVE: Monitoring of Jets in AGN with VLBA Experiments. V. Multi-epoch VLBA Images
- Modeling the Emission Processes in Blazars
- The blazar sequence: a new perspective
- GeV breaks in blazars as a result of gamma-ray absorption within the broad-line region
- Correlated Multi-Waveband Variability in the Blazar 3C~279 from 1996 to 2007
- Multiwaveband Polarimetric Observations of 15 Active Galactic Nuclei at High Frequencies: Correlated Polarization Behavior
- Detection of significant cm to sub-mm band radio and gamma-ray correlated variability in Fermi bright blazars
- Time-correlation between the radio and gamma-ray activity in blazars and the production site of the gamma-ray emission
- Results of WEBT, VLBA and RXTE monitoring of 3C 279 during 2006-2007
- Radio/gamma-ray time delay in the parsec-scale cores of active galactic nuclei
- Multi-wavelength observations of 3C 279 during the extremely bright gamma-ray flare in 2014 March-April
- Time Dependent Hadronic Modeling of Flat Spectrum Radio Quasars
- The RINGO2 and DIPOL Optical Polarisation Catalogue of Blazars