Abstract Details
| Name: Arun Mangalam Affiliation: Indian Institute of Astrophysics Conference ID: ASI2016_532 Title : A model for jet polarization and emission in blazars Authors and Co-Authors : Abstract Type : Poster Abstract Category : Extragalactic astronomy Abstract : Blazars exhibit strong flares seen in $\gamma$-rays, X-rays, and optical/NIR bands. We implement a realistic magnetic surface geometry in a general relativistic model to describe effects on emission from orbital features in the jet close to the black hole horizon radius. The overall boost factor $g$ depends on the black hole mass, the bulk Lorentz factor of the blob and the angle between the direction of the photon to the observer and the instantaneous velocity of the blob.The calculation predicts a strong correlation or anti-correlation between optical flux and degree of polarization during the flare and corresponding rapid swings in polarization angle for optically thin synchrotron emission with helical magnetic fields. We compare these properties with recent observations of 3C 454.3. |