A5101449368- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Astrophysical Phenomena and Observations
- Geophysics and Gravity Measurements
- Cosmology and Gravitation Theories
- High-pressure geophysics and materials
- Radio Astronomy Observations and Technology
- Astrophysics and Cosmic Phenomena
- Rabies epidemiology and control
- Atomic and Subatomic Physics Research
- Seismic Waves and Analysis
- Mosquito-borne diseases and control
- Magnetic confinement fusion research
- Cold Atom Physics and Bose-Einstein Condensates
- Viral Infections and Vectors
- Geophysics and Sensor Technology
- Advanced Frequency and Time Standards
- Superconducting Materials and Applications
- Venomous Animal Envenomation and Studies
- Drug-Induced Hepatotoxicity and Protection
- Respiratory viral infections research
- Influenza Virus Research Studies
- Essential Oils and Antimicrobial Activity
- Dark Matter and Cosmic Phenomena
- History and Developments in Astronomy
UCLouvain
2025
Royal Observatory of Belgium
2025
National Institute for Subatomic Physics
2022-2025
Vitenparken
2025
Utrecht University
2021-2025
Institute for High Energy Physics
2024
Indian Institute of Technology Gandhinagar
2017-2024
Inter-University Centre for Astronomy and Astrophysics
2020-2024
University of Calcutta
2024
Université Paris Cité
2023
Abstract On the 29th of May 2023, LIGO–Virgo–KAGRA Collaboration observed a compact binary coalescence event consistent with neutron star – black hole merger, though heavier object mass 2.5 − 4.5 M⊙ would fall into purported lower gap. An alternative explanation for apparent observations events in this range has been suggested as strongly gravitationally lensed stars. In scenario, magnification lead to source appearing closer and than it really is. Here, we investigate chances possible...
The LIGO-Virgo analyses of signals from compact binary mergers observed so far have assumed isolated systems in a vacuum, neglecting the potential presence astrophysical environments. We present here first investigation environmental effects on each events GWTC-1 and two low-mass GWTC-2. find no evidence for effects. Most decisively exclude scenario dynamical fragmentation massive stars as their formation channel. GW170817 results most stringent upper bound medium density...
Multimessenger searches for binary neutron star (BNS) and star-black hole (NSBH) mergers are currently one of the most exciting areas astronomy. The search joint electromagnetic neutrino counterparts to gravitational wave (GW)s has resumed with ALIGO’s, AdVirgo’s KAGRA’s fourth observing run (O4). To support this effort, public semiautomated data products sent in near real-time include localization source properties guide complementary observations. In preparation O4, we have conducted a...
A non consideration just a couple of years ago, energy efficiency is quickly becoming the most important issue in every industry today. In Datacom world, vendors are tackling this question from holistic perspective, clearly showing that consumption data centers can be reduced by more than half. Telecom world however, have limited discussion to their individual products. As such, total impact deploying higher rectifiers or cooling units remains quite small on site level. This blindside...
Japanese encephalitis is a leading form of viral encephalitis, prevalent mostly in South Eastern Asia caused by virus (JEV). It transmitted the mosquitoes Culex sp. The disease affects children and results 50% result permanent neuropsychiatric disorder. There arises need to develop safe, affordable, potent anti-viral agent against JEV. This study aimed assess antiviral activity ajwain (Trachyspermum ammi: Umbellifereae) essential oil JEV.Ajwain was extracted distillation method vitro...
Recent discoveries of gravitational wave (GW) signals from astrophysical compact binary systems neutron stars and black holes have firmly established them as prime sources for advanced GW detectors. Theoretical templates expected such been used to filter the detector data using matched filtering technique. An efficient grid over parameter space at a fixed minimal match has direct impact on improving computational efficiency these searches. We present construction three dimensional template...
Gravitational waves provide us with an extraordinary tool to study the matter inside neutron stars. In particular, postmerger signal probes extreme temperature and density regime will help reveal information about equation of state supranuclear-dense matter. Although current detectors are most sensitive emitted by binary stars before merger, upgrades existing construction next generation make detections feasible. For this purpose, we present a new analytical, frequency-domain model for...
Astrophysical compact binary systems consisting of neutron stars and black holes are an important class gravitational wave (GW) sources for advanced LIGO detectors. Accurate theoretical waveform models from the inspiral, merger, ringdown phases such used to filter detector data under template-based matched-filtering paradigm. An efficient grid over parameter space at a fixed minimal match has direct impact on overall time taken by these searches. We present new hybrid geometric-random...
Pharmacognosy Research,2016,8,2,123-127.DOI:10.4103/0974-8490.175610Published:February 2016Type:Original ArticleAuthors:Soumen Roy, Sandip Pawar, and Abhay Chowdhary Author(s) affiliations:Soumen Roy1, Pawar2, Chowdhary1 1Department of Virology, Haffkine Institute for Training, Research Testing, Parel, Maharashtra, INDIA. 2Department Biochemistry, The Science, Fort, Mumbai, Abstract:Aim: To evaluate in vitro cytotoxicity antioxidant activity Datura metel L. Cynodon dactylon extracts....
Abstract The design of the γ-γ fast timing array VENTURE-2.0 is presented as an upgradation VENTURE existing at Variable Energy Cyclotron Centre (VECC), Kolkata. development will give rise to possibility exotic nuclear structure studies in terms shapes, spin and isospin using spectroscopy. new aimed measuring level lifetimes from few nanoseconds down about picoseconds nuclei produced with low cross section. Nine different sizes CeBr 3 detectors crystal dimension (diameter ( ϕ ) × thickness t...
The higher multipoles of gravitational wave signals from coalescing compact binaries play a vital role in the accurate reconstruction source properties, bringing about deeper and nuanced understanding fundamental physics astrophysics. Their effect is most pronounced systems with asymmetric masses having an orbital geometry that not face-on. detection any single, isolated merger event challenging, as there much less power comparison to dominant quadrupole mode. In this paper, we present new...
Modeled searches of gravitational wave signals from compact binary mergers rely on template waveforms determined by the theory general relativity (GR). Once a signal is detected, one generally performs model agnostic test GR, either looking for consistency between GR waveform and data or introducing phenomenological deviations to detect departure GR. The nontrivial presence beyond-GR physics can alter could be missed template-based searches. A recent study [H. Narola et al., Beyond...
A total of 100 blood and 18 urine samples rodents suspected dogs were collected from Mumbai, India during 2006-2008. In order to determine the role animals in transmission disease humans, all screened retrospectively by real-time polymerase chain reaction for leptospiral DNA antibodies detected using microscopic agglutination test. Leptopsiral was two five rodents. Of a 71 rodent dog investigated anti-Leptospira antibodies, 14 (19.7%) positive. Pyrogenes predominant serovar found 100.0%...
Accurate waveform models describing the complete evolution of compact binaries are crucial for maximum likelihood detection framework, testing predictions General Relativity (GR) and investigating possibility an alternative theory gravity. Deviations from GR could manifest in subtle variations numerical value GW signal's post-Newtonian (PN) phasing coefficients. Once search pipelines confirm unambiguous signal detection, deviations coefficients at various PN orders routinely measured...
Pharmacognosy Research,2016,8,4,265-269.DOI:10.4103/0974-8490.188874Published:August 2016Type:Original ArticleAuthors:Soumen Roy, Sandeepan Mukherjee, Sandip Pawar, and Abhay Chowdhary Author(s) affiliations:Soumen Roy1, Mukherjee1, Pawar2, Chowdhary1 1Department of Virology, Haffkine Institute for Training, Research Testing, Parel, Mumbai, Maharashtra, INDIA. 2Department Biochemistry, The Science, Fort, Abstract:Objective: soxhlet cold extracts Datura metel Linn. were evaluated in vitro...
Recently, strong evidence was found for the presence of higher-order modes in gravitational wave signals GW190412 and GW190814, which originated from compact binary coalescences with significantly asymmetric component masses. This has opened up possibility new tests general relativity by looking at way are related to basic signal. Here we further develop a test assesses whether amplitudes subdominant harmonics consistent what is predicted relativity. To this end incorporate state-of-the-art...
Detections of gravitational-wave signals from compact binary coalescences have enabled us to study extreme astrophysical phenomena and explore fundamental physics. A crucial requisite for these studies is accurate signal models with characteristic morphologies, which been challenging many decades, researchers are still endeavoring incorporate important Therefore, morphology-independent methods developed identifying a its reconstruction. The reconstructed allows test the agreement between...
The LIGO-Virgo analyses of signals from compact binary mergers observed so far have assumed isolated systems in vacuum, neglecting the potential presence astrophysical environments. We present here first investigation environmental effects on events GWTC-1. find no evidence for effects. Most decisively exclude scenario dynamical fragmentation massive stars as their formation channel. GW170817 results most stringent upper bound medium density $\lesssim 21 \text{g/cm}^3$). that can...
Interaction between immune system and Chandipura virus (CHPV) during different stages of its life cycle remain poorly understood. The exact route entry into the blood CNS invasion has not been clearly defined. present study was undertaken to assess population in PBMC that supports growth detect active replication as well subsets.PBMC subsets viz.: CD3(+), CD14(+), CD19(+), CD56(+)cells were separated infected with CHPV. cells then assessed for transcription (N gene primer) (NP CHPV by PCR....
The soxhlet, cold, and ayurvedic extracts of