518 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Indian Institute of Technology GandhinagarIN282 papers
- Tata Institute of Fundamental ResearchIN161 papers
- Centre National de la Recherche ScientifiqueFR100 papers
- Indian Institute of AstrophysicsIN92 papers
- Chinese Academy of SciencesCN71 papers
- Aryabhatta Research Institute of Observational SciencesIN66 papers
- Inter-University Centre for Astronomy and AstrophysicsIN62 papers
- Harish-Chandra Research InstituteIN54 papers
- Indian Institute of Science BangaloreIN54 papers
- Indian Institute of Technology BombayIN54 papers
- Udaipur Solar ObservatoryIN53 papers
- California Institute of TechnologyUS46 papers
105 papers · 1 filter
Star formation in the Sh 2-53 region influenced by accreting molecular filaments
T. Baug, L. K. Dewangan, D. K. Ojha +6
We present a multi-wavelength analysis of a 3030 area around the Sh 2-53 region (hereafter S53 complex), which is associated with at least three H II regions, tw…
Interplanetary and Geomagnetic Consequences of Interacting CMEs of 13-14 June 2012
Nandita Srivastava, Wageesh Mishra, D. Chakrabarty
We report on the kinematics of two interacting CMEs observed on 13 and 14 June 2012. Both CMEs originated from the same active region NOAA 11504. After their launches which were se…
SPIRou Input Catalogue: Global properties of 440 M dwarfs observed with ESPaDOnS at CFHT
Pascal Fouqué, Claire Moutou, Lison Malo +13
Present and future high-precision radial-velocity spectrometers dedicated to the discovery of low-mass planets orbiting low-mass dwarfs need to focus on the best selected stars to…
Infrared spectroscopy of the remnant of Nova Sco 2014: a symbiotic star with too little circumstellar matter to decelerate the ejecta
U. Munari, D. P. K. Banerjee
Pre-outburst 2MASS and WISE photometry of Nova Sco 2014 (V1534 Sco) have suggested the presence of a cool giant at the location of the nova in the sky. The spectral evolution recor…
Bounds on Neutrino Mass in Viscous Cosmology
Sampurn Anand, Prakrut Chaubal, Arindam Mazumdar +2
Effective field theory of dark matter fluid on large scales predicts the presence of viscosity of the order of . It has been shown that this magnitude of viscosi…
Solving the fermionic mass hierarchy of the standard model
Gauhar Abbas
We show that a simultaneous explanation for fermionic mass hierarchy among and within the fermionic families, quark-mixing, can be obtained in an extension of the standard model, w…
Flavour Model for Dirac Neutrinos: Type I and Inverse Seesaw
Debasish Borah, Biswajit Karmakar
We propose two different seesaw models namely, type I and inverse seesaw to realise light Dirac neutrinos within the framework of discrete flavour symmetry. The additional fi…
Electrical and thermal conductivities of hot and dense hadron gas
Guruprasad Kadam, Hiranmaya Mishra, Lata Thakur
We estimate the electrical and thermal conductivities of hot and dense hadronic matter in the relaxation time approximation of the Boltzmann equation. We estimate the thermodynamic…
Correlated X-ray/UV/optical emission and short term variability in a Seyfert 1 galaxy NGC 4593
Main Pal, Sachindra Naik
We present a detailed multi-frequency analysis of an intense monitoring programme of Seyfert 1 galaxy NGC 4593 over a duration of nearly for a month with Swift observatory. We used…
Transition Elements in Supernova Presolar Grains: Condensation vs. Implantation
Kuljeet K. Marhas, Piyush Sharda
We compute the concentrations of five transition elements (Cr, Fe, Co, Ni and Zn) in supernova presolar grains (Silicon Carbide Type X) from the time they condense till the end of…
Understanding the spectral and timing behavior of a newly discovered transient X-ray pulsar Swift J0243.6+6124
Gaurava K. Jaisawal, Sachindra Naik, J. Chenevez
We present the results obtained from timing and spectral studies of the newly discovered accreting X-ray binary pulsar Swift J0243.6+6124 using a NuSTAR observation in 2017 October…
Interstellar extinction in twenty open star clusters
Geeta Rangwal, R. K. S. Yadav, Alok Durgapal +1
The interstellar extinction law in twenty open star clusters namely Berkeley 7, Collinder 69, Hogg 10, NGC 2362, Czernik 43, NGC 6530, NGC 6871, Bochum 10, Haffner 18, IC 4996, NGC…
Nova Ophiuchus 2017 as a probe of C nucleosynthesis and carbon monoxide formation and destruction in classical novae
Vishal Joshi, Dipankar P. K. Banerjee, Mudit Srivastava
We present a series of near-infrared spectra of Nova Ophiuchus 2017 in the band that record the evolution of the first overtone CO emission in unprecedented detail. Starting fr…
New insights in the mid-infrared bubble N49 site: a clue of collision of filamentary molecular clouds
L. K. Dewangan, D. K. Ojha, I. Zinchenko
We investigate the star formation processes operating in a mid-infrared bubble N49 site, which harbors an O-type star in its interior, an ultracompact HII region, and a 6.7 GHz met…
Simulating coronal loop implosion and compressible wave modes in a flare hit active region
Aveek Sarkar, Bhargav Vaidya, Soumitra Hazra +1
There is considerable observational evidence of implosion of magnetic loop systems inside solar coronal active regions following high energy events like solar flares. In this work,…
Challenges posed by non-standard neutrino interactions in the determination of at DUNE
K. N. Deepthi, Srubabati Goswami, Newton Nath
One of the primary objectives of Deep Underground Neutrino Experiment (DUNE) is to discover the leptonic CP violation and to identify it's source. In this context, we study the imp…
Constraints on Born-Infeld gravity from the speed of gravitational waves after GW170817 and GRB 170817A
Soumya Jana, Girish Kumar Chakravarty, Subhendra Mohanty
The observations of gravitational waves from the binary neutron star merger event GW170817 and the subsequent observation of its electromagnetic counterparts from the gamma-ray bur…
Heavy quark complex potential in a strongly magnetized hot QGP medium
Balbeer Singh, Lata Thakur, Hiranmaya Mishra
We study the effect of a strong constant magnetic field, generated in relativistic heavy ion collisions, on the heavy quark complex potential. We work in the strong magnetic field…
Sub-MeV Self Interacting Dark Matter
Bhavesh Chauhan
In this paper, we present a model for sub-MeV dark matter with strong self interactions which can solve some of the small scale crisis of the CDM. The dark matter is a Majorana…
No-scale SUGRA Inflation and Type-I seesaw
Ila Garg, Subhendra Mohanty
We show that MSSM with three right handed neutrinos incorporating a renormalizable Type-I seesaw superpotential and no-scale SURGA Kähler potential can lead to a Starobinsky kind o…
The role of relativistic many-body theory in probing new physics beyond the standard model via the electric dipole moments of diamagnetic atoms
B. K. Sahoo, B. P. Das
The observation of electric dipole moments (EDMs) in atomic systems due to parity and time-reversal violating (P,T-odd) interactions can probe new physics beyond the standard model…
Cadmium Zinc Telluride Imager onboard AstroSat : a multi-faceted hard X-ray instrument
A. R. Rao, D. Bhattacharya, V. B. Bhalerao +2
The AstroSat satellite is designed to make multi-waveband observations of astronomical sources and the Cadmium Zinc Telluride Imager (CZTI) instrument of AstroSat covers the hard X…
Annama H chondrite - mineralogy, physical properties, cosmic ray exposure, and parent body history
Tomáš Kohout, Jakub Haloda, Patricie Halodová +27
The fall of the Annama meteorite occurred early morning (local time) on April 19, 2014 on the Kola Peninsula (Russia). Based on mineralogy and physical properties, Annama is a typi…
Design & development of position sensitive detector for hard X-ray using SiPM and new generation scintillators
S. K. Goyal, Amisha P. Naik, Mithun N. P. S. +11
There is growing interest in high-energy astrophysics community for the development of sensitive instruments in the hard X-ray energy extending to few hundred keV. This requires po…