Atmospheric turbulence is the main cause of image degradation and poor resolution at the focal plane of a perfectly made optical telescope. It is necessary to make corrective measures to improve the optical wave-front, ...

Ultracold atoms is one of the most rapidly expanding fields of modern science. Its ap- plications are not restricted to just atomic and molecular physics, but also to condensed matter physics, astrophysics, quantum ...

The discovery of several bright supernovae (SNe) in recent years has evoked a great deal of interest in these objects. The study of these objects are of importance not only as probes to the end stages of stellar evolution, ...

Supernovae (SNe) are explosive transient events that mark the end stage of stellar evolution. This work presents a study of low redshift, hydrogen deficient (Type I) SNe, with emphasis on SNe of type Ia. The data were ...

Astronomy today is in the path of constructing large telescopes. Due to several manufacturing and maintenance difficulties, large telescopes of more than 8 m are predominantly segmented. To fulfill the need for its growing ...

In this thesis an attempt is made to address the Fanaroff-Riley (FR) dichotomy observed in radio-powerful active galactic nuclei (AGNs) within the framework of the “Unification Scheme” for radio-loud AGNs, using high ...

A nearly self contained and detailed introduction to TDE physics with novel aspects and a summary of observations is provided. We have constructed a dynamical model of tidal disruption events (TDEs) that includes physical ...

The most challenging limitation in the transit photometry method arises from the noises in the photometric signal. In particular, the ground-based telescopes are heavily affected by the noise due to the perturbation in ...

The thesis is mainly focused on the modeling of pulsar radio emission and polarization. The radio emission mechanism of pulsar is not fully understood, because of the lack of understanding about the kinematical processes ...