The research work presented in this thesis is aimed to provide a detailed under- standing of the radiative processes powering the jets of the blazars, a class of AGNs with jet pointed towards the line of sight to the ...

The Echelle spectrograph operating at Vainu Bappu Telescope (VBT) is a general-purpose instrument designed for high-resolution spectroscopy. It was considered for precision Radial Velocity (RV) measurements without altering ...

Modern astronomical spectrographs have been in use for several hundred years now, contributing to the study of the physical, chemical and kinematical properties of stars and other celestial bodies. In the recent years, ...

Single aperture speckle interferometry (Labeyrie, 1970) is a method that de- ciphers diffraction limited spatial Fourier spectrum and image features of stellar objects by counteracting blurring effect caused by the ...

Numerous groundbreaking discoveries have been made in exoplanet science over the past decade. Recent exoplanet search surveys have provided compelling evidence that planets are exceedingly common, with the majority of ...

Star clusters are gravitationally bound systems composed of a large number of stars, ranging from thousands to millions. As the dynamic age of the cluster is less than the age of the universe, dynamical interactions ...

Stars form in the densest regions of molecular clouds which are actually gravitationally unstable cores that resides at the junction of filaments. Before the onset of the gravitational collapse in cores, the build up of ...