All articles
Astronomers find cold atomic gas playing peek-a-boo around a powerful quasar
The interaction of radio jets with gas associated with the host galaxy could play an important role in determining their morphology. Such interactions may be more prevalent at high redshifts, when these powerful AGN are still the assembly sites of...
A comparison of the properties of Narrow Line and the Broad Line Seyfert galaxies
AGNs are very luminous objects at the centre of active galaxies. The inner regions of these galaxies can not be resolved directly, yet the understanding of these regions can be achieved by employing indirect methods. In this study, we employed...
Fantastic beasts and where to find them: the elusive nature of X-ray quiet black holes
With the gravitational wave observations capturing the coalescence of compact objects, hunting for black holes has taken quite a front-row seat in astronomical observations. Here, we discuss two such detection of black holes in orbit with a main sequence companion,...
Precise Measurement of Flux Density of Radio Emissions from the Sun using Day-time Celestial Radio Sources
During astronomical observation, astronomers measure the amount of energy emitted by astronomical objects. This energy is generally measured in terms of the flux density of the source. At radio frequencies, these measurements are calibrated using calibrator sources, which have known...
Vainu Bappu Observatory: the telescope town of India
A popular article describing the history and contributions of the Vainu Bappu Observatory: the telescope town of India. My affair with the observatory is also highlighted in brief.
What makes radio-quiet AGN radio-quiet? A polarization perspective
There is a lack of consensus on the origin of radio emission in radio-quiet (RQ) and radio-intermediate (RI) AGN. Primary contenders include low-power radio jets, winds, star-formation and coronal emission. Our multi-frequency, multi-scale radio polarization study has revealed a multi-component...
