7 papers
Spectral evolution of NS binary system GX 349+2 using AstroSat observations
Garima Tyagi, Suchismito Chattopadhyay, Sree Bhattacherjee +3
We present a broadband spectral study of the Sco-like Z source GX 349+2 using AstroSat LAXPC and SXT observations obtained during 2019 and 2024. The X-ray light curves exhibit larg…
X-Ray Timing Properties of the Black Hole Candidate IGR J17091-3624 During the 2022 Outburst Onset with AstroSat
Sree Bhattacherjee, Biplob Sarkar
We present the evolution of rapid X-ray timing variability in the black hole X-ray binary IGR J17091-3624 during the initial phase of its 2022 outburst using a ~3-day-long AstroSat…
The Polarized X-ray Universe: Insights and Discoveries
Arbind Pradhan, Sree Bhattacherjee, Biplob Sarkar
Polarization is one of the fundamental natures of electromagnetic radiation. The detection of polarization or polarized photons from distant X-ray radiating systems (such as X-ray…
Energy-dependent temporal study of GX 13+1 with AstroSat observation
Arbind Pradhan, Sree Bhattacherjee, Biplob Sarkar
In this work, we performed an energy-dependent study of low-frequency oscillations observed in GX 13+1 using \textit{AstroSat} (Large Area X-ray Proportional Counter and Soft X-ray…
Spectral evolution of GX 17+2 using AstroSat and NICER observations
Sree Bhattacherjee, Ranjeev Misra, Biplob Sarkar +3
We study the spectral evolution of the Z-track source GX 17+2 using AstroSat and NICER observations taken between 2016 and 2020. The AstroSat observations cover the period when the…
Spectro-temporal study of atoll source GX 9+9 observed with AstroSat
Sree Bhattacherjee, Arbind Pradhan, Biplob Sarkar
In this work, we performed a spectro-temporal investigation of the low-mass X-ray binary GX 9+9 using the Large Area X-ray Proportional Counter (LAXPC) and Soft X- ray Telescope (S…
X-Ray spectral and temporal properties of LMXB 4U 1608-52- observed with AstroSat and NICER
Sree Bhattacherjee, Ankur Nath, Biplob Sarkar +4
We report results from a detailed study of the neutron star X-ray binary, 4U 1608-52 using observations with {\it AstroSat} (LAXPC/SXT) and {\it NICER} during its 2016 and 2020 out…