A5046701683- Pulsars and Gravitational Waves Research
- Radio Astronomy Observations and Technology
- Advanced Frequency and Time Standards
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Gamma-ray bursts and supernovae
- Astrophysics and Cosmic Phenomena
- GNSS positioning and interference
- Advanced Vision and Imaging
- Astronomy and Astrophysical Research
- Black Holes and Theoretical Physics
- Solar and Space Plasma Dynamics
- Satellite Image Processing and Photogrammetry
- Ionosphere and magnetosphere dynamics
- Image Processing Techniques and Applications
- Experimental and Theoretical Physics Studies
- Geophysics and Gravity Measurements
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
Institute of Mathematical Sciences
2016-2022
Jai Narain Vyas University
2019
Campbell Collaboration
2019
Thüringer Landessternwarte Tautenburg
2016
High-precision measurements of the pulsar dispersion measure (DM) are possible using telescopes with low-frequency wideband receivers. We present an initial study application timing technique, which can simultaneously times arrival (ToAs) and DMs, for a set five pulsars observed upgraded Giant Metrewave Radio Telescope (uGMRT) as part Indian Pulsar Timing Array (InPTA) campaign. have used observations 300-500 MHz band uGMRT this purpose. obtain high precision in DM precisions order...
Abstract We introduce pinta , a pipeline for reducing the upgraded Giant Metre-wave Radio Telescope (uGMRT) raw pulsar timing data, developed Indian Pulsar Timing Array experiment. provide detailed description of workflow and usage as well its computational performance RFI mitigation characteristics. also discuss novel independent determination relative time offsets between different back-end modes uGMRT interpretation observation frequency settings their agreement with results obtained from...
Pulsar radio emission undergoes dispersion due to the presence of free electrons in interstellar medium (ISM). The dispersive delay arrival time pulsar signal changes over varying ISM electron column density along line sight. Correcting for this accurately is crucial detection nanohertz gravitational waves using Timing Arrays. In work, we present in-band and inter-band DM estimates four pulsars observed with uGMRT timescale a year two different template alignment methods. DMs obtained both...
The Indian Pulsar Timing Array is an experiment aimed at detection of Gravitational waves (GWs) in the sub-microHertz frequency range by observing ensemble millisecond pulsars (MSPs). GWs from both stochastic GW background as well individual sources like supermassive black hole binaries (SMBHBs) leave imprint on time-of-arrival (TOA) pulsed emission MSPs, which could be detected with high precision due to clock-like stability these pulsars. InPTA aims contribute its data and analysis results...
Aims. The young star V1331 Cyg received previous attention because it is surrounded by an optical, arc-like reflection nebula. commonly considered to be a candidate for object that has undergone FU-Ori (FUOR) outbreak in the past. This turn could lead time-varying appearance of dusty arcs may revealed multi-epoch imaging. In particular, radial colour analysis dust can then attempted check whether grain size distribution was modified FUOR wind.
For axially symmetric flow of dissipationless inhomogeneous fluid onto a non rotating astrophysical black hole under the influence generalized pseudo-Schwarzschild gravitational potential, we investigate background configuration on determining salient features corresponding acoustic geometry. The horizon for aforementioned structure has been located and surface gravity $\kappa$ as well associated analogue Hawking temperature $T_{\rm AH}$ calculated {\it analytically}. dependence geometry...
Stereo vision finds a wide range of applications in areas computer and machines, such as providing three dimensional perceptions, imitating humans. The crucial correspondence problem faced by most visual systems can be resolved matching algorithms to great extent. Broadly, the are categorized area based feature based. Area Based technique involves correlation which is relatively fast provides dense disparity map. In this paper, some significant techniques involved discussed. This paper...