124 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Manipal Academy of Higher EducationIN24 papers
- Indian Institute of AstrophysicsIN5 papers
- Indian Space Research OrganisationIN3 papers
- Sichuan UniversityCN2 papers
- Bhabha Atomic Research CentreIN1 paper
- Center for Excellence in Basic SciencesIN1 paper
- Chiba Institute of TechnologyJP1 paper
- GSI Helmholtz Centre for Heavy Ion ResearchDE1 paper
- Homi Bhabha National InstituteIN1 paper
- Indian Association for the Cultivation of ScienceIN1 paper
- Indian Institute of Science BangaloreIN1 paper
- Indian Institute of Technology BombayIN1 paper
24 papers
Numerical study of multiple scattering intensities obtained from dust grains of different sizes and compositions in an impact-induced ejecta curtain
U. Keerthana, P. Shalima, Koji Wada +2
Impact cratering of celestial bodies produces an ejecta plume containing underground material, which helps us understand the properties of subsurface grains and the surface evoluti…
Finding the evolutionary link between ULIRGs and radio galaxies
Ayisha Fida, Sumana Nandi, Mousumi Das +4
Ultraluminous infrared galaxies (ULIRGs) are the remnants of the major mergers of gas-rich galaxies. They are dusty systems and are extremely luminous in the infrared. Both starbur…
Particle production during inflation: constraints expected from redshifted 21 cm observations from the epoch of reionization
Suvedha Suresh Naik, Pravabati Chingangbam, Kazuyuki Furuuchi
We examine a type of features in the primordial scalar power spectrum, namely, the bump-like feature(s) that arise as a result of burst(s) of particle production during inflation.…
Black holes shielded by magnetic fields
Chandrachur Chakraborty
Black holes (BHs) formed by collapsing and/or merging of magnetized progenitors, have magnetic fields penetrating the event horizon, and there are several possible scenarios. Thus,…
Gravitational Larmor precession
Chandrachur Chakraborty, Parthasarathi Majumdar
Inspired by the reported existence of substantive magnetic fields in the vicinity of the central supermassive black holes in Sagitarius A* and Messier 87*, we consider test particl…
Particle production during inflation: A Bayesian analysis with CMB data from Planck 2018
Suvedha Suresh Naik, Kazuyuki Furuuchi, Pravabati Chingangbam
A class of inflationary models that involve rapid bursts of particle productions predict observational signatures, such as bump-like features in the primordial scalar power spectru…
Gravitational analog of Faraday rotation in the magnetized Kerr and Reissner-Nordström spacetimes
Chandrachur Chakraborty
It is known that the gravitational analog of the Faraday rotation arises in the rotating spacetime due to the nonzero gravitomagnetic field. In this paper, we show that it also ari…
Multiwavelength monitoring of NGC 1275 over a decade: Evidence of a shift in synchrotron peak frequency and long-term multi-band flux increase
Sanna Gulati, Debbijoy Bhattacharya, Subir Bhattacharyya +3
We carried out a detailed study of the temporal and broadband spectral behaviour of one of the brightest misaligned active galaxies in gamma-rays, NGC 1275 utilising 11 years of Fe…
Large Field Excursions from Dimensional (De)construction
Kazuyuki Furuuchi, Suvedha Suresh Naik, Noel Jonathan Jobu
An inflation model based on dimensional (de)construction of a massive gauge theory is proposed. The inflaton in this model is the "zero-mode" of a component of the massive gauge fi…
Magnetic field creation by solar mass neutrino jets
Dharam Vir Ahluwalia, Cheng-Yang Lee
Parity violation and its effects for neutrinos in astrophysical contexts have been considered earlier in pioneering papers of Hawking and Vilenkin. But because even the largest mag…
Fermionic degeneracy and non-local contributions in flag-dipole spinors and mass dimension one fermions
Cheng-Yang Lee
We construct a mass dimension one fermionic field associated with flag-dipole spinors. These spinors are related to Elko (flag-pole spinors) by a one-parameter matrix transformatio…
Microscopic description of the ground state properties of recently reported new isotopes
H. M. Devaraja, Y. K. Gambhir, A. Bhagwat +3
Microscopic investigations for the observed properties of the recently reported five unstable new isotopes are carried out. The ground state properties are calculated in the relati…
Correlating nonlinear properties with spectral states of RXTE data: Possible observational evidences for four different accretion modes around compact objects
Oluwashina Adegoke, Prasun Dhang, Banibrata Mukhopadhyay +2
By analyzing the time series of RXTE/PCA data, the nonlinear variabilities of compact sources have been repeatedly established. Depending on the variation in temporal classes, comp…
Weak Gravity Conjecture From Low Energy Observers' Perspective
Kazuyuki Furuuchi
The Weak Gravity Conjecture (WGC) was proposed to constrain Effective Field Theories (EFTs) with Abelian gauge symmetry coupled to gravity. In this article, I study the WGC from lo…
Interactions and oscillations of coherent flavor eigenstates in beta decay
Cheng-Yang Lee
The theory pioneered by Blasone and Vitiello describes massive neutrinos as generalized coherent flavor eigenstates within the extended Standard Model. In this paper, we compute th…
Constraints on a generalized deceleration parameter from cosmic chronometers
Abdulla Al Mamon
In this paper, we have proposed a generalized parametrization for the deceleration parameter in order to study the evolutionary history of the universe. We have shown that the…
Tunnelling in Dante's Inferno
Kazuyuki Furuuchi, Marcus Sperling
We study quantum tunnelling in Dante's Inferno model of large field inflation. Such a tunnelling process, which will terminate inflation, becomes problematic if the tunnelling rate…
A parametric reconstruction of the deceleration parameter
Abdulla Al Mamon, Sudipta Das
The present work is based on a parametric reconstruction of the deceleration parameter in a model for the spatially flat FRW universe filled with dark energy and non-relativ…
Non-Boltzmann Ensembles and Monte Carlo Simulation
K P N Murthy
Boltzmann sampling based on Metropolis algorithm has been extensively used for simulating a canonical ensemble. An estimate of a mechanical property, like energy, of an equilibrium…
Excursions through KK modes
Kazuyuki Furuuchi
In this article we study Kaluza-Klein (KK) dimensional reduction of massive Abelian gauge theories with charged matter fields on a circle. Since local gauge transformations change…
The IR Obstruction to UV Completion for Dante's Inferno Model with Higher-Dimensional Gauge Theory Origin
Kazuyuki Furuuchi, Yoji Koyama
We continue our investigation of large field inflation models obtained from higher-dimensional gauge theories, initiated in our previous study arXiv:1407.1951. We focus on Dante's…
Automatic Detection of Magnetic delta in Sunspot Groups
Sreejith Padinhatteeri, Paul A. Higgins, D. Shaun Bloomfield +1
Large and magnetically complex sunspot groups are known to be associated with flares. To date, the Mount Wilson scheme has been used to classify sunspot groups based on their morph…
Simulating charge transport to understand the spectral response of Swept Charge Devices
P. S. Athiray, P. Sreekumar, S. Narendranath +1
Swept Charge Devices (SCD) are novel X-ray detectors optimized for improved spectral performance without any demand for active cooling. The Chandrayaan-1 X-ray Spectrometer (C1XS)…
extra-natural inflation with Standard Model on a brane
Kazuyuki Furuuchi, Jackson M. S. Wu
The interrelation between inflationary cosmology and new physics beyond the Standard Model (SM) is studied in a extension of the SM embedded in a (4+1)-dimensional spa…