Search Results - "Goswami, Rituparno"

Charged radiation collapse in Einstein–Gauss–Bonnet gravity by Brassel, Byron P., Maharaj, Sunil D., Goswami, Rituparno

“…We generalise the continual gravitational collapse of a spherically symmetric radiation shell of matter in five dimensional Einstein–Gauss–Bonnet gravity to…”
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How appropriate are the gravitational entropy proposals for traversable wormholes? by Chakraborty, Samarjit, Guha, Sarbari, Goswami, Rituparno

“…In this paper we have examined the validity of some proposed definitions of gravitational entropy (GE) in the context of traversable wormhole solutions of the…”
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Semi-tetrad decomposition of spacetime with conformal symmetry by Hansraj, Chevarra, Goswami, Rituparno, Maharaj, Sunil D.

“…We study the kinematical and dynamical properties of spacetimes that admit a conformal Killing vector. A 1 + 1 + 2 decomposition of the spacetime is performed…”
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What makes a shear-free spherical perfect fluid be inhomogeneous with tidal effects? by Hakata, Jonathan, Goswami, Rituparno, Hansraj, Chevarra, Maharaj, Sunil D.

“…This is an important and natural question as the spacetime shear, inhomogeneity and tidal effects are all intertwined via the Einstein field equations. Though…”
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Role of equation of states and thermodynamic potentials in avoidance of trapped surfaces in gravitational collapse by Goswami, Rituparno, Govender, Terricia

“…In this paper we consider the novel scenario where a spherically symmetric perfect fluid star is undergoing continual gravitational collapse while continuously…”
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New class of solutions in conformally symmetric massless scalar field collapse by Ojako, Samson, Goswami, Rituparno, Maharaj, Sunil D.

“…In this paper we explicitly show the existence of a class of conformally symmetric solutions of spherically symmetric massless scalar field collapse with a…”
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Causal structure of spacetime and Scott topology by Mazibuko, Langelihle, Baboolal, Dharmanand, Goswami, Rituparno

“…In this paper we establish the spacetime manifold as a partially ordered set via the casual structure. We show that these partially ordered sets are naturally…”
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Inhomogeneous and Radiating Composite Fluids by Brassel, Byron P., Maharaj, Sunil D., Goswami, Rituparno

“…We consider the energy conditions for a dissipative matter distribution. The conditions can be expressed as a system of equations for the matter variables. The…”
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Higher-dimensional inhomogeneous composite fluids: energy conditions by Brassel, Byron P, Maharaj, Sunil D, Goswami, Rituparno

“…The energy conditions are studied, in the relativistic astrophysical setting, for higher-dimensional Hawking–Ellis Type I and Type II matter fields. The null,…”
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Scattering of Ricci scalar perturbations from Schwarzschild black holes in modified gravity by Sibandze, Dan B., Goswami, Rituparno, Maharaj, Sunil D., Nzioki, Anne Marie, Dunsby, Peter K. S.

“…It has already been shown that the gravitational waves emitted from a Schwarzschild black hole in f ( R ) gravity have no signatures of the modification of…”
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Neutron stars in the Starobinsky model by Ganguly, Apratim, Gannouji, Radouane, Goswami, Rituparno, Ray, Subharthi

“…We study the structure of neutron stars in the [functionof](R) =R + alpha R super(2) theory of gravity (the Starobinsky model) in an exact and nonperturbative…”
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Cosmic censorship and charged radiation in second order Lovelock gravity by Brassel, Byron P., Goswami, Rituparno, Maharaj, Sunil D.

“…The conditions for naked singularity formation are considered for a radiating metric of Boulware–Deser type within an electromagnetic field in second order…”
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Spherical gravitational collapse in N dimensions by Goswami, Rituparno, Joshi, Pankaj S.

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Conformally flat collapsing stars in f(R) gravity by Chakrabarti, Soumya, Goswami, Rituparno, Maharaj, Sunil, Banerjee, Narayan

“…The present work includes an analytical investigation of a collapsing spherical star in f ( R ) gravity. The interior of the collapsing star admits a conformal…”
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Buchdahl-Bondi limit in modified gravity: Packing extra effective mass in relativistic compact stars by Goswami, Rituparno, Maharaj, Sunil D., Nzioki, Anne Marie

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Black hole mass threshold from nonsingular quantum gravitational collapse by BOJOWALD, Martin, GOSWAMI, Rituparno, MAARTENS, Roy, SINGH, Parampreet

“…Quantum gravity is expected to remove the classical singularity that arises as the end state of gravitational collapse. To investigate this, we work with a toy…”
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Diffusive and dynamical radiating stars with realistic equations of state by Brassel, Byron P., Maharaj, Sunil D., Goswami, Rituparno

“…We model the dynamics of a spherically symmetric radiating dynamical star with three spacetime regions. The local internal atmosphere is a two-component system…”
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The Boulware–Deser class of spacetimes radiates by Brassel, Byron P., Maharaj, Sunil D., Goswami, Rituparno

“…We establish the result that the standard Boulware–Deser spacetime can radiate. This allows us to model the dynamics of a spherically symmetric radiating…”
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Birkhoff theorem and matter by Goswami, Rituparno, Ellis, George F. R.

“…Birkhoff’s theorem for spherically symmetric vacuum spacetimes is a key theorem in studying local systems in general relativity theory. However realistic local…”
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Quantum evaporation of a naked singularity by Goswami, Rituparno, Joshi, Pankaj S, Singh, Parampreet

“…We investigate here quantum effects in gravitational collapse of a scalar field model which classically leads to a naked singularity. We show that…”
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