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Birkhoff's Theorem and Uniqueness: A Peek Beyond General Relativity
Rajes Ghosh, Akash K Mishra, Avijit Chowdhury
In General Relativity, Birkhoff's theorem asserts that any spherically symmetric vacuum solution must be static and asymptotically flat. In this paper, we study the validity of Bir…
Connecting quasi-normal modes with causality in Lovelock theories of gravity
Avijit Chowdhury, Akash K Mishra, Sumanta Chakraborty
The eikonal correspondence between the quasi-normal modes (QNMs) of asymptotically flat static spherically symmetric black holes and the properties of unstable null circular geodes…
Accreting Schwarzschild-like compact object: Plasma-photon interaction and stability
Avijit Chowdhury, Shauvik Biswas, Sumanta Chakraborty
Accretion is a common phenomenon associated with any astrophysical compact object, which is best described by plasma, a state of matter composed of electrons and heavy ions. In thi…