Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Dey, Ramit"'
Modeling self-gravitating gas flows is essential to answering many fundamental questions in astrophysics. This spans many topics including planet-forming disks, star-forming clouds, galaxy formation, and the development of large-scale structures in t
Externí odkaz:
http://arxiv.org/abs/2308.08010
The astrophysical stochastic gravitational wave background (SGWB) originates from numerous faint sub-threshold gravitational wave (GW) signals arising from the coalescing binary compact objects. This background is expected to be discovered from the c
Externí odkaz:
http://arxiv.org/abs/2305.03090
Autor:
Bino, Gianfranco, Basu, Shantanu, Dey, Ramit, Auddy, Sayantan, Muller, Lyle, Vorobyov, Eduard I.
Publikováno v:
Open Journal of Astrophysics, Vol. 6, 2023
Modeling the dynamics of the formation and evolution of protostellar disks as well as the history of stellar mass accretion typically involve the numerical solution of complex systems of coupled differential equations. The resulting mass accretion hi
Externí odkaz:
http://arxiv.org/abs/2302.03742
Planet induced sub-structures, like annular gaps, observed in dust emission from protoplanetary disks provide a unique probe to characterize unseen young planets. While deep learning based model has an edge in characterizing the planet's properties o
Externí odkaz:
http://arxiv.org/abs/2202.11730
Publikováno v:
Phys. Rev. D 105, 124051 (2022)
We study scalar test-field perturbations on top of a Kerr--black-bounce background, i.e. a family of rotating regular black holes and/or rotating traversable wormholes that can mimic Kerr black holes. We compute the quasi-normal modes for a massless
Externí odkaz:
http://arxiv.org/abs/2201.01650
The observed sub-structures, like annular gaps, in dust emissions from protoplanetary disk, are often interpreted as signatures of embedded planets. Fitting a model of planetary gaps to these observed features using customized simulations or empirica
Externí odkaz:
http://arxiv.org/abs/2107.09086
Publikováno v:
Phys. Rev. D 103, 084019 (2021)
In the context of higher dimensional braneworld scenario, we have argued that the occurrence of horizonless exotic compact objects, as an alternative to classical black holes, are more natural. These exotic compact objects carry a distinctive signatu
Externí odkaz:
http://arxiv.org/abs/2010.07966
Autor:
Dey, Ramit, Afshordi, Niayesh
Publikováno v:
Phys.Rev.D 102 (2020) 12, 126006
The Kerr/CFT correspondence is a possible route to gain insight into the quantum theory of gravity in the near-horizon region of a Kerr black hole via a dual holographic conformal field theory (CFT). Predictions of the black hole entropy, scattering
Externí odkaz:
http://arxiv.org/abs/2009.09027
Publikováno v:
Phys. Rev. D 101, 104014 (2020)
The holographic interpretation of the Randall-Sundrum model based on the adaptation of the AdS/CFT correspondence to the braneworld scenario states that the black holes localized on the brane are {\it quantum corrected}. This can be better understood
Externí odkaz:
http://arxiv.org/abs/2001.01301
Publikováno v:
Phys. Lett. B 797, 134828 (2019)
We analyze Hawking radiation as perceived by a freely-falling observer and try to draw an inference about the region of origin of the Hawking quanta. To do so, first we calculate the energy density from the stress energy tensor, as perceived by a fre
Externí odkaz:
http://arxiv.org/abs/1906.02958