7 papers
Potential detection of ~ 4.2 keV emission line from GRS 1747-312
Amom Lanchenbi Chanu, Akash Garg, Ranjeev Misra +1
We present a broadband spectral analysis of the neutron star LMXB GRS 1747-312 using 40 ks AstroSat data. The source was observed during the decay phase of the 2017 outburst…
Neuro-Parametric Spectral Classification of Black Hole and Neutron Star X-ray Binary Systems
Akash Garg, Aman Kumar, Ajit Kembhavi +5
We perform the classification of black hole and neutron star X-ray binary systems using deep neural networks applied to archival RXTE X-ray spectral data. We first construct two ne…
Evolution of the 2021 Outburst of GX 339-4 with AstroSat
Vaibhav Sharma, Ranjeev Misra, J S Yadav +2
We present a comprehensive study of the 2021 outburst of GX 339-4 using AstroSat observations in the hard-intermediate (HIMS) and soft-intermediate states (SIMS). Spectral and timi…
Probing the energy-dependent temporal nature of MAXI J1803-298 with AstroSat and NICER
Arbind Pradhan, Akash Garg, Ranjeev Misra +1
We performed the spectral and temporal analysis of MAXI J1803-298 using AstroSat/LAXPC and NICER observations taken in May 2021 during the initial phase of the outburst. We found t…
Quasi-Periodic Oscillations due to radiative feedback mechanism between the disc and corona
Akash Garg, Ranjeev Misra, Somasri Sen
Compact object systems exhibit Quasi-Periodic Oscillations (QPOs) as revealed by peaked features in their power density spectra. It has been known that stochastic variations in the…
Contemporaneous X-ray and Optical Polarization of EHSP Blazar H 1426+428
Anuvab Banerjee, Akash Garg, Divya Rawat +17
We present the first contemporaneous X-ray and optical polarimetric measurement of the extremely high synchrotron peaked (EHSP) blazar H 1426+428. The X-ray polarimetric observatio…