Abstract:
Blazars consisting of BL Lacertae objects (BL Lacs; featureless compsite
optical/UV spectra) and flat-spectrum radio quasars (FSRQs; promi nent emission lines in composite optical/UV spectra), are the active
galactic nuclei (AGNs) with strong relativistic jets pointing towards the
direction of the observer. Their double-humped spectral energy distribu tions (SEDs) extend from radio to very high energy γ−rays. TeV (Tera
electron Volt) blazars, those observed at TeV energies, are mostly the
high-frequency peaked blazars (HBLs), that is, the first hump of their
SED peaks at UV to X-ray energy bands. In this thesis, we performed
the X-ray (0.3-10 keV), UV, and optical variability study of TeV HBL
PG 1553+113 on intraday/short/long timescales and spectral analysis
to understand better their fine structures and the underlying emission
processes at these energy bands.
Description:
The thesis is submitted to Pt. Ravishankar Shukla University, Raipur, under the supervision of Dr. Alok C. Gupta and Dr. D. P. Bisen
