A5091870722- Pulsars and Gravitational Waves Research
- Quantum Electrodynamics and Casimir Effect
- Radio Astronomy Observations and Technology
- Cosmology and Gravitation Theories
- Experimental and Theoretical Physics Studies
- Laser-Plasma Interactions and Diagnostics
- Nonlinear Waves and Solitons
- Noncommutative and Quantum Gravity Theories
- Advanced Optical Imaging Technologies
- Astrophysics and Cosmic Phenomena
- Geophysics and Sensor Technology
- Planetary Science and Exploration
- Black Holes and Theoretical Physics
- Relativity and Gravitational Theory
- Seismic Imaging and Inversion Techniques
- Digital Holography and Microscopy
Indian Statistical Institute
2024
St Xavier’s College
2024
St. Xavier's College (Autonomous)
2024
Abstract The Lunar Gravitational-wave Antenna (LGWA) is a proposed array of next-generation inertial sensors to monitor the response Moon gravitational waves (GWs). Given size and expected noise produced by lunar seismic background, LGWA would be able observe GWs from about 1 mHz Hz. This make missing link between space-borne detectors like LISA with peak sensitivities around few millihertz future terrestrial Einstein Telescope or Cosmic Explorer. In this article, we provide first...
The Lunar Gravitational-wave Antenna (LGWA) is a proposed array of next-generation inertial sensors to monitor the response Moon gravitational waves (GWs). Given size and expected noise produced by lunar seismic background, LGWA would be able observe GWs from about 1 mHz Hz. This make missing link between space-borne detectors like LISA with peak sensitivities around few millihertz future terrestrial Einstein Telescope or Cosmic Explorer. In this article, we provide first comprehensive...
Abstract A beyond Horndeski theory is considered that admits wormholes, black holes and naked singularities. In this the shadow images of exotic compact objects (ECOs), illuminated by an optically geometrically thin disk, are investigated. The results show three kinds cast unlike images, in particular, because different possess a number light rings. boundaries accretion disk also affect images. This may provide further insight into nature massive objects.
A beyond Horndeski theory is considered that admits wormholes, black holes and naked singularities. In this the shadow images of exotic compact objects (ECOs), illuminated by an optically geometrically thin disk, are investigated. The results show three kinds cast unlike images, in particular, because different possess a number light rings. boundaries accretion disk also affect images. This may provide further insight into nature massive objects.
In this paper, we propose a new Analogue Gravity example - spinning (or Kerr) Black Hole in an extended fluid model. The model receives Berry curvature contributions and applies to electron dynamics Condensed Matter lattice systems the hydrodynamic limit. We construct acoustic metric for sonic fluctuations that obey structurally relativistic wave equation effective curved background. novel approach of dimensional analysis, have derived explicit expressions mass angular momentum per unit (in...
In this paper, we propose a new analog gravity example---a spinning (or Kerr) black hole in an extended fluid model; the latter was derived earlier work [A. K. Mitra and S. Ghosh, Divergence anomaly Schwinger terms: Towards consistent theory of anomalous classical fluids, Phys. Rev. D 106, L041702 (2022).] by two present authors. The model receives Berry curvature contributions applies to electron dynamics condensed matter lattice systems hydrodynamic limit. We construct acoustic metric for...
The present paper is based on a previous work (involving two of the authors) where generalized fluid dynamical model was proposed. underlying symplectic structure Lagrangian discrete degrees freedom obeyed Non-Commutative algebra, generated by Berry curvature correction. In an Euler (or Hamiltonian) framework, this manifested as extended algebra between variables, leading to model. Here we study dynamics sonic fluctuations that live in effective analogue gravity spacetime. Interestingly...
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 signatures waves. In this paper, we consider some viable pulse profiles which are not yet analyzed by others (e.g., $u^{-4}$, $u^{-2}$, $ \frac{c}{(u^2 + au +b)^2} $), and examine memory effect produced these pulses pp-wave spacetime. We choose to work Brinkmann coordinates solve geodesic equations. From plots...