3 papers
gr-qc2026
Joule-Thomson effect and Efficiency of deformed AdS-Schwarzschild black hole in presence of quintessence
Dhruba Jyoti Gogoi, Ronit Karmakar, Jyatsnasree Bora +2
We study the Joule-Thomson expansion and extended thermodynamics of a modified black hole characterised by the parameters , , and . Analysis of the Hawking temperature,…
gr-qc2025
Strong Lensing Effect and Quasinormal Modes of Oscillations of Black Holes in Gravity Theory
Gayatri Mohan, Ronit Karmakar, Rupam Jyoti Borah +1
In this work, we analyze the strong lensing phenomenon and quasinormal modes (QNMs) in the case of black holes (BHs) surrounded by fluids within the framework of gravity,…
gr-qc2024
Quasinormal modes, thermodynamics and shadow of black holes in Hu-Sawicki f(R) gravity theory
Ronit Karmakar, Umananda Dev Goswami
We derive novel black hole solutions in a modified gravity theory, namely the Hu-Sawicki model of gravity. After obtaining the black hole solution, we study the horizon radi…