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 ...

Tiny particles in the solid, liquid, or mixed phases and suspended in air are known as atmospheric aerosols (Junge, 1963). Despite being minor constituents of the atmosphere, these particles have a profound influence and ...

The solar corona is known to be associated with eruptions of large amount of magnetized plasma into the interplanetary space. In-spite of several years of groundand space-based observations of the solar atmosphere, the ...

Black holes (BHs) are one of the most exotic objects found in the Universe. They fall into a class of astrophysical objects termed as compact objects. Apart from BHs, neutron stars (NSs) and white dwarfs (WDs) also fall ...

Astrometry is the science of studying positions and motions of the celestial objects. Astrometry, by its definition, can be considered to be started with the first naked eye observations of the night sky. Thus, it is one ...

Supernovae are the cosmic fireworks that mark the death of stars, wherein heavy elements are forged and dispersed, leading to the galactic enrichment of the Universe. In core-collapse supernovae, the collapse of the inert ...

Supernovae (SNe) are the giant stellar explosions that brie y outshines the whole galaxy and enhances chemical enrichment. The thesis highlights a group of SNe with diminishing Hydrogen envelope. This mostly comprises ...

A detailed study of magnetized astrophysical ows has been carried out in the magnetohydrodynamic and special relativistic magneto- hydrodynamic regime. We have considered the thermodynamics of the ow to be described ...

Active Galactic Nuclei (AGN) are small regions in centers of some galaxies which emit powerful electromagnetic radiation, often outshining stars, gas, and dust which make up the host galaxy. These are the brightest ...