Multi-wavelength Data Analysis and Theoretical Modeling of Blazar Flares

Abstract

This thesis is aimed to study the strong and spectacular flares of blazar. Blazars belong to a class of active galactic nuclei (AGN) with one of the jets pointing towards the observer. Blazars are observed in all wavelengths and show chaotic flux variability during flaring states. The spectral energy distribution of blazar is characterized by two hump kind of structures. The first one peaks in low energy band (IR to soft X-ray), which is well explained by synchrotron mechanism caused by the relativistic electrons in the magnetic field of the jets. The second one peaks in the high energy band (hard X-ray to gamma-ray), which is thought to be the product of inverse Compton scattering of low energy photons with relativistic electrons within the jets or from outside the jets.