| Name: | Archana Singh |
| Affiliation: | BARC |
| Conference ID: | ASI2025_355 |
| Title: | Study of Anti-Correlated Optical Polarization and Flux Variability in the Blazar 1ES 1959+650 |
| Authors: | Archana Singh 1, K. K. Singh 1,2, A. Tolamatti 1,2, K. K. Yadav 1, 2 |
| Authors Affiliation: | 1 Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
2 Astrophysical Sciences Division, Bhabha Atomic Research Centre, Mumbai 400085, India |
| Mode of Presentation: | Poster |
| Abstract Category: | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract: | Blazars are characterized to exhibit non-thermal variable emission over entire electromagnetic spectrum from radio to very high energy gamma rays. The optical emission from these sources shows strong linear polarization along with a significant variability over different time scales. In this work, we report results from the long term optical observations of the blazar 1ES1959+650 using over a decade data from the Steward Observatory. The degree of linear polarization measured in the wavelength range 500 nm to 700 nm is highly variable with a fractional variability amplitude of ~39% during the whole period. The polarization angle is found to change randomly with a mean value of ~144 degree. The photometry data in V and R bands are found to be less variable and show an anti-correlation with the degree of linear polarization during few epochs. Results from this study indicate synchrotron emission produced by a power law distribution of relativistic electrons gyrating in a spherical region permeated with chaotic and ordered magnetic fields. |
