Building telescope enclosures is vital for setting up any optical observatory. An enclosure was constructed in remote hilly terrain to provide shelter to India’s largest 3.6 m Devasthal Optical Telescope (DOT). Primarily, ...

One of the major challenges in the research of jetted active galactic nuclei (AGN) is the completeness of the source catalogs released using the c-ray data taken from the Fermi-large area telescope (LAT). There are about ...

Emissions of greenhouse gases (GHGs) from the Indian subcontinent have increased during the last 20 years along with rapid economic growth; however, there remains a paucity of GHG measurements for policy-relevant research. ...

We have carried out detailed time-resolved timing analyses of three cataclysmic variables (CVs) namely LS Cam, V902 Mon, and SWIFT J0746.3-1608, using the long-baseline, high-cadence optical photometric data from the ...

Some of the major challenges faced in understanding the early evolution of coronal mass ejections (CMEs) are due to the limited observations in the inner corona (<3 Re) and the plane-of-sky measurements. In this work, we ...

Present thesis focuses on the optical photometric, astrometric and dynamical analysis of three southern namely NGC 6067, NGC 2506, IC 4651 and two northern namely King 12 and NGC 2355 galactic star clusters. These clusters ...

This paper reports a rare interaction between two fronts of nighttime medium scale traveling ionospheric disturbances (MSTIDs) and associated phenomena observed over geomagnetic low-mid latitude transition region on a ...

We present optical photometric and spectroscopic observations of two cataclysmic variables (CVs), namely RBS 0490 and SDSS J075939.79+191417.3. The optical variations of RBS 0490 have been found to occur with a period ...

This study examines the concentrations and characteristics of carbonaceous aerosols (including saccharides) and inorganic species measured by PM2.5 filter sampling and a multi-wavelength Aethalometer during two campaigns ...

This thesis presents the development of a new simulation code, accompanied by a relativistically correct equation of state (EoS), dedicated to correctly accounting for the thermodynamics of multispecies plasma composed ...