arXiv subjects

Shubhen Biswas

Publications and source records attributed to Shubhen Biswas.

3 recordsLinked to original sources

arXiv2025

Stellar Kinematics of the Milky Way Galaxy in the Post-Newton Gravity

In this paper the recent interaction model over post-Newtonian theory of gravity has been used to study the stellar dynamics. It implies space time fabric that built over the massive object gets perturbed or literally contracted in presence of the test body having significant mass. In usual practice of general relativity the effect of interaction is missing or negligible but taking in consideration of this additional interaction the geodesic path followed by the test body must be deviated. From the celestial dynamics we know stellar rotation in the galaxy is not in accordance to Newton gravity and it prompts us to reconcile this interactive modified field for the galactic stars. Here we are to study the galactic stellar kinematics over introducing this additional perturbation. The galactic disk including the central super massive black hole and the star rotating around are being modelled theoretically as an effective two body system. In fact application of this model in the Milky Way shows the galactocentric solar rotational speed 220 km/s and is a good agreement with the observations.

gr-qc↗

arXiv2024

Flyby Anomaly in the Variation Principle of General Relativity

The anomalous velocity deviation in the osculating planetary flyby attracts enough attention as a problem of General Relativity. In connection of rotating weak field massive source the Lense Thirring metric is diagonalized to find the equation of motion from action invariance Hamilton principle in pure relativistic theory. The computation for near Earth flyby shows energy anomaly over the asymptotic in and out velocity obeying Anderson's empirical formula.

gr-qc↗

arXiv2023

Transformations of metric tensor and interactive theory of gravity

In this paper it is reconciled how the metric in Minkowskian space-time gets transformed from one coordinates system to another after successive Lorentz transformations. And likewise this idea is generalized to achieve metric transformation from one curved spacetime to another. The synergy between different sources of masses manifests curved space-time perturbed and the perturbed metric is assumed as point-to-point infinitesimal quasi Lorentz transformation of the Minkowski metric. For two body system this model of linear perturbation interactive gravity is tested for the unstable planetary elliptical orbit and the precession of perihelion is revisited.

gr-qc↗