The surface of the Sun and solar-type stars is permeated by magnetic fields with a va- riety of spatial and temporal scales. The spatial scales range from sub-arcsec tangled fields that are yet to be observed (inaccessible ...

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, ...

Star formation is a chain of processes in which molecular clouds get converted to a compact stellar systems, which are the potential platforms of life. Although, numerous observations and simulations have been performed ...

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 ...