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- Inter-University Centre for Astronomy and AstrophysicsIN16 papers
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- National Centre for Radio AstrophysicsIN9 papers
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5 papers · 1 filter
Properties of atomic hydrogen gas in the Galactic plane from THOR 21-cm absorption spectra: a comparison with the high latitude gas
Arghyadeep Basu, Nirupam Roy, Henrik Beuther +5
The neutral hydrogen 21 cm line is an excellent tracer of the atomic interstellar medium in the cold and the warm phases. Combined 21 cm emission and absorption observations are ve…
The origin of the vanishing soft X-ray excess in the changing-look Active Galactic Nucleus Mrk 590
Ritesh Ghosh, Sibasish Laha, Kunal Deshmukh +3
We have studied the nature and origin of the soft X-ray excess detected in the interesting changing-look AGN (CLAGN) Mrk~590 using two decades of multi-wavelength observations from…
Moderate Correlation between the Accretion Disk and Jet Power in a Large Sample of Fermi Blazars
Garima Rajguru, Ritaban Chatterjee
We present the results of studying the accretion disk vs jet power for a large fraction of all the blazars detected by the Fermi Gamma-Ray Space Telescope. The disk power is inferr…
Radio Dichotomy in Quasars with H FWHM greater than km\,s
A. Chakraborty, A. Bhattacharjee, M. S. Brotherton +3
It has been inferred from large unbiased samples that - of all quasars are radio-loud (RL). Using the quasar catalog from the Sloan Digital Sky Survey, we show that the…
Locating the GeV Emission Region in the Jets of Blazars from Months-Timescale Multi-Wavelength Outbursts
Saugata Barat, Ritaban Chatterjee, Kaustav Mitra
It is well-known that the -ray emission in blazars originate in the relativistic jet pointed at the observers. However, it is not clear whether the exact location of the GeV emi…