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- Inter-University Centre for Astronomy and AstrophysicsIN16 papers
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15 papers · 1 filter
Scalar and Spinor Quasi Normal Modes of a 2D Dilatonic Blackhole
Pabitra Gayen, Ratna Koley
External non-minimally coupled scalar and spinor field perturbations have been studied in a (1 + 1) dimensional dilatonic blackhole spacetime [1, 2]. Exact analytical expressions o…
Herrera Complexity and Shadows of Spherically Symmetric Compact Objects
Subhasis Nalui, Subhra Bhattacharya
In this work we investigate the effect of complexity factor on the formation of photon spheres for spherically symmetric compact objects. The complexity factor obtained from the or…
Dynamics of Dissipative Gravitational Collapse in the Morris-Thorne Wormhole Metric: One Scenario -- Several Outcomes
Subhasis Nalui, Subhra Bhattacharya
We consider the dynamical Morris-Thorne metric with radiating heat flow. By matching the interior Morris-Thorne metric with an exterior Vaidya metric we trace out the collapse solu…
Finite-time Cosmological Singularities and the Possible Fate of the Universe
Jaume de Haro, Shin'ichi Nojiri, S. D. Odintsov +2
Singularities in any physical theory are either remarkable indicators of the unknown underlying fundamental theory, or indicate a change in the description of the physical reality.…
Complexity factor Parametrization for Traversable Wormholes
Subhra Bhattacharya, Subhasis Nalui
It is known that static traversable wormhole in Einstein gravity is supported by matter that violates null energy conditions (NEC). Essentially such wormhole will be characterised…
Dynamics in Varying vacuum Finsler-Randers Cosmology
G. Papagiannopoulos, S. Basilakos, A. Paliathanasis +2
In the context of Finsler-Randers theory we consider, for a first time, the cosmological scenario of the varying vacuum. In particular, we assume the existence of a cosmological fl…