110 citations · 2k across the 94 of their papers we have counts for
94 papers
AstroSat Observations of the Dipping Low Mass X-ray Binary XB 1254-690
Nilam R. Navale, Devraj Pawar, A. R. Rao +4
XB 1254-690 is a neutron star low-mass X-ray binary with an orbital period of 3.88 hrs, and it exhibits energy-dependent intensity dips, thermonuclear bursts, and flares. We presen…
AstroSat view of the neutron star low-mass X-ray binary GX 340+0
Yash Bhargava, Sudip Bhattacharyya, Jeroen Homan +1
Understanding the spectral evolution along the `Z'-shaped track in the hardness-intensity diagram of Z-sources, which are a class of luminous neutron star low-mass X-ray binaries,…
Broadband spectro-temporal investigation of neutron star low-mass X-ray binary GX 349+2
Unnati Kashyap, Manoneeta Chakraborty, Sudip Bhattacharyya +1
We report a broadband investigation of the Z-type neutron star (NS) low mass X-ray binary (LMXB) GX 349+2 using AstroSat and NICER. AstroSat observed the source exhibiting large sc…
Disk-corona modeling for spectral index and luminosity correlation of tidal disruption events
T. Mageshwaran, Sudip Bhattacharyya
We present a relativistic disk-corona model for a steady state advective accretion disk to explain the UV to X-ray spectral index evolution of \textbf{four} tidal d…
Contrasting X-ray/UV time-lags in Seyfert 1 galaxies NGC 4593 and NGC 7469 using AstroSat observations
Kavita Kumari, G. C. Dewangan, I. E. Papadakis +6
We study accretion disk-corona connection in Seyfert 1 galaxies using simultaneous UV/X-ray observations of NGC 4593 (July 14-18, 2016) and NGC 7469 (October 15-19, 2017) performed…
Automated classification of Chandra X-ray point sources using machine learning methods
Shivam Kumaran, Samir Mandal, Sudip Bhattacharyya +1
A large number of unidentified sources found by astronomical surveys and other observations necessitate the use of an automated classification technique based on machine learning m…