output
20052026
most citedThe Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package

5k citations

Showing 2021 · gr-qcShow all

6 papers · 2 filters

gr-qc2021★ 8 cited

Cosmological dynamics of f(R) models in dynamical system analysis

Parth Shah, Gauranga C. Samanta

In this work we try to understand the late time acceleration of the universe by assuming some modification in the geometry of the space and using dynamical system analysis. This te…

gr-qc2021★ 8 cited

Singularity resolution in gravitational collapse

Karim Mosani, Dipanjan Dey, Kaushik Bhattacharya +1

We investigate the unhindered gravitational collapse of a homogeneous scalar field with nonzero potential, a two-dimensional analog of the Mexican hat-shaped Higgs field potential.…

gr-qc2021★ 6 cited

On the visibility of singularities in general relativity and modified gravity theories

Karim Mosani, Dipanjan Dey, Pankaj S. Joshi +3

We investigate the global causal structure of the end state of a spherically symmetric marginally bound Lemaitre-Tolman-Bondi (LTB) \cite{Lemaitre, Tolman, Bondi} collapsing cloud…

gr-qc2021★ 21 cited

Causal Structure of Singularity in non-spherical Gravitational Collapse

Dipanjan Dey, Pankaj S. Joshi, Karim Mosani +1

We investigate here the final state of gravitational collapse of a non-spherical and non-marginally bound dust cloud as modeled by the Szekeres spacetime. We show that a directiona…

gr-qc2021★ 23 cited

Globally visible singularity in an astrophysical setup

Karim Mosani, Dipanjan Dey, Pankaj S. Joshi

The global visibility of a singularity as an end state of the gravitational collapse of a spherically symmetric pressureless cloud is investigated. We show the existence of a non-z…

gr-qc2021★ 1 cited

Post-Newtonian properties of EMRI with Power Law Potential

Chinmay N. Gandevikar, Divyesh N. Solanki, Dipanjan Dey

There are many astrophysical scenarios where extreme mass ratio inspiral (EMRI) binaries can be surrounded by matter distribution. The distribution of mass can affect the dynamical…