Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Datta, Sucheta"'
Autor:
Datta, Sucheta, Guha, Sarbari
Publikováno v:
Phys. Scr. 99 (2024) 075023
In this paper, we study the gravitational memory effect in pp-wave spacetimes due to the passage of a pulse having the form of a ramp profile through this spacetime. We have analyzed the effect of this pulse on the evolution of nearby geodesics, and
Externí odkaz:
http://arxiv.org/abs/2309.06208
A gravitational wave pulse, while passing through spacetime, brings about a change in the relative separation between free particles. This `memory effect' serves as one of the signatures of gravitational waves. In this paper, we consider some viable
Externí odkaz:
http://arxiv.org/abs/2212.06794
Publikováno v:
International Journal of Theoretical Physics, 2023
In this paper we apply the Regge-Wheeler formalism to study the propagation of axial and polar gravitational waves in matter-filled Bianchi I universe. Assuming that the expansion scalar $ \Theta $, of the background space-time, is proportional to th
Externí odkaz:
http://arxiv.org/abs/2205.05733
Autor:
Datta, Sucheta, Guha, Sarbari
Publikováno v:
Physics of the Dark Universe 34 (2021) 100890
We apply the Regge-Wheeler formalism to study axial and polar gravitational waves in Kantowski-Sachs universe. The background field equations and the linearised perturbation equations for the modes are derived in presence of matter. To find analytica
Externí odkaz:
http://arxiv.org/abs/2106.03203
Autor:
Guha, Sarbari, Datta, Sucheta
Publikováno v:
International Journal of Modern Physics D, Vol. 29, No. 16 (2020) 2050116 (21 pages)
In this paper, we have studied the propagation of axial gravitational waves in Bianchi I universe using the Regge-Wheeler gauge. In this gauge, there are only two non-zero components of $ h_{\mu\nu} $ in the case of axial waves: $h_0(t,r)$ and $h_1(t
Externí odkaz:
http://arxiv.org/abs/2008.04780
Autor:
Datta, Sucheta, Guha, Sarbari
In this paper, we have considered a toy model of an anisotropic universe and studied the propagation of gravitational waves in such a universe. The consideration of this toy model simplifies the analysis and helps us to illustrate the effects of anis
Externí odkaz:
http://arxiv.org/abs/1908.06743
Akademický článek
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Autor:
Datta, Sucheta1 (AUTHOR), Guha, Sarbari1 (AUTHOR) srayguha@yahoo.com, Chakraborty, Samarjit1 (AUTHOR)
Publikováno v:
International Journal of Theoretical Physics. Oct2023, Vol. 62 Issue 10, p1-31. 31p.
