111 citations
- St. Xavier's College (Autonomous)61 papers
- Jadavpur UniversityIN14 papers
- Tata Institute of Fundamental ResearchIN13 papers
- Homi Bhabha National InstituteIN10 papers
- Saha Institute of Nuclear PhysicsIN10 papers
- National Centre for Radio AstrophysicsIN9 papers
- Indian Institute of Technology HyderabadIN8 papers
- Institute of Mathematical SciencesIN8 papers
- Bielefeld UniversityDE7 papers
- Indian Institute of Science BangaloreIN7 papers
- Indian Institute of Science Education and Research MohaliIN7 papers
- Indian Institute of Technology RoorkeeIN7 papers
92 papers
Probing heartbeat oscillations from the black hole X-ray binary GRS 1915+105 using spectral-timing analysis
Karan Akbari, Chintan Patel, Sayantan Bhattacharya +2
GRS 1915+105 is a black hole X-ray binary whose -class ("heartbeat") oscillations (50--100 s) are attributed to radiation-pressure instabilities in the inner accretion dis…
A continuous transition from Type-C Quasi Periodic Oscillations to the Heartbeat state in the Black hole X-ray binary 4U 1630-47
Chintan Patel, Sayantan Bhattacharya, Karan Akbari +2
We present a timing analysis of the black hole X-ray binary (BHXRB) 4U 1630-47 using AstroSat observations from 10-19 March 2023, for the first time capturing a rare and rapid tran…
Pedagogical study of the image of a magnetic dipole in front of a superconducting sphere
Hemansh Alkesh Shah, Kolahal Bhattacharya
The method of images to solve certain electrostatic boundary-value problems is taught worldwide in undergraduate-level physics courses. Though it is also possible to employ this te…
Overcharging Extremal Rotating Black Holes
Shauvik Biswas, Amruta Sadhu, Sudipta Sarkar
In this work, we use the weak cosmic censorship conjecture(WCC) to constrain black hole solutions in modified gravity theories. While Wald showed that extremal Kerr-Newman black ho…
The Energy Spectrum of the Pion from Lattice QCD
Debarshi Mukherjee, Dilan Arik, Navneeth C +6
In this report, computational techniques are employed to extract the energy eigenvalues of the pion from two-point correlation function data that has been simulated using the latti…
From a collapsing radiating star to an evaporating black hole: A smooth transition from classical to quantum entropy
Sarbari Guha, Shamima Khan, Rituparno Goswami
We present a robust mechanism where the geometrical free-gravitational entropy of an isolated astrophysical radiating star undergoing continual gravitational collapse, as measured…