Chaudhuri, R. K; Chattopadhyay, S(American Institute of Physics, 2019-08)
We report the Auger and Coster-Kronig transition energies (related to double ionization potentials) of noble gas elements obtained using
the Fock-space multireference coupled cluster (FSMRCC) method with relativistic ...
Chaudhuri, S. K; Mukherjee, P. K; Chaudhuri, R. K; Chattopadhyay, S(2018-04)
The equation of motion coupled cluster methodology within relativistic framework has been applied
to analyze the electron correlation effects on the low lying dipole allowed excited states of Ne and
Al3þ under classical ...
Karak, B. B; Miesch, Mark; Bekki, Y(American Institute of Physics, 2018-04)
Observations suggest that the large-scale convective velocities obtained by solar convection simulations might be over-estimated (convective conundrum). One plausible solution to this could be the
small-scale dynamo which ...
Bhattacharyya, D; Mangalam, A(Cambridge University Press, 2018-05)
Black holes at the centers of the galaxies grow mainly by the processes of accretion, mergers, and consumption of stars. In the case of gas accretion with cooling sources, the flow is momentum driven, after which the black ...
Dumka, U. C; Kaskaoutis, D. G; Sagar, R; Chen, J; Singh, N; Tiwari, S(Elsevier B.V, 2017-02)
The present work examines the influence of relative humidity (RH), physical and optical
aerosol properties on the light-scattering enhancement factor [f(RH=85%)] over central Indian Himalayas during the Ganges Valley ...
Deepak; Reddy, B. E(Cambridge University Press, 2019-06)
Here, we explore the enrichment of Lithium in the Galaxy using a large sample of stars common among large spectroscopic surveys such as the GALAH and astrometric survey by the Gaia satellite. For this study we used about ...
In our earlier studyDutta (2016a), it has been shown that a number of primordial protostars (the ‘first stars’ in the Universe, also known as Population III or Pop III stars) are being ejected from the cluster of their ...
Kataria, Sandeep Kumar; Mousumi Das(Cambridge University Press, 2019-06)
One of the major and widely known small scale problem with the Lambda CDM model of cosmology is the “core-cusp” problem. In this study we investigate whether this problem can be resolved using bar instabilities. We see ...
Kumar, A; Mousumi Das; Kataria, Sandeep Kumar(Cambridge University Press, 2019-06)
We investigate the minor interactions of two disk galaxies with mass ratio of 10:1 in fly-by encounters that do not lead to the merging of the galaxies. In our N-body simulations, we vary only the pericenter distances to ...
MCP-based detectors are widely used in the ultraviolet (UV) region due to their low noise levels, high sensitivity
and good spatial and temporal resolution. We have developed a compact near-UV (NUV) detector for highaltitude ...
Kumar, R; Pradhan, A. C; Parthasarathy, M; Ojha, D. K; Mohapatra, A; Murthy, J(Cambridge University Press, 2019-05)
We have performed photometric analysis of four Galactic globular clusters (GGCs): NGC 4147, NGC 4590, NGC 5053 and NGC 7492 using far-UV and near-UV filters of the Ultraviolet Imaging Telescope (UVIT) on-board AstroSat. ...
Mageshwaran, T; Mangalam, A(Cambridge University Press, 2018-05)
The occurence rate of tidal disruption events (TDEs) by survey missions depend on the black hole mass function of the galaxies, properties of the stellar cusp and mass of the central black hole. Using a power law density ...
Chaudhuri, S. K; Chaudhuri, R. K; Mukherjee, P. K; Chattopadhyay, S(American Institute of Physics, 2017-08)
A relativistic study of spectroscopic properties of the endohedral fullerenes Ng@Cq 60 (where Ng
= He, Ne and q = 0, ±1, ±2 are the charges) associated with the C60 molecule has been done using the
equation of motion ...
Nayak, P. K; Subramaniam, A; Subramanian, S; Sahu, S; Mondal, C; Cioni, Maria-Rosa L; Bell, C(Cambridge University Press, 2019-05)
For the first time, we report the identification of NUV bright red clump (RC) stars and the extension of RC stars over two magnitudes both in color and magnitude axis in NUV vs (NUV – optical) color magnitude diagram. We ...
Banyal, R. K; Reiners, A(World Scientific Publishing Co., 2017-03)
We propose a dual cavity Fabry–Perot interferometer as a wavelength calibrator and a stability tracking device for astronomical spectrograph. The FPI consists of two adjoining cavities engraved on a low expansion monoblock ...
In the context of the Sun–Earth connection of coronal mass ejections and magnetic flux ropes (MFRs), we studied
the solar active region (AR) and the magnetic properties of magnetic cloud (MC) event during 2013 April ...
Snehalata Sahu; Subramaniam, A(Cambridge University Press, 2019-05)
We present the results obtained from Near-UV observations of the cluster NGC 5466 taken with UVIT onboard AstroSat to study the radial distribution of Blue Straggler Stars (BSSs), covering the cluster region up to a radius ...
Sindhu, N; Subramaniam, A; Geller, A. M; Jadhav, Vikrant; Knigge, Christian; Simunovic, Mirko; Leigh, Nathan; Shara, Michael; Puzia, T. H(Cambridge University Press, 2019-05)
We investigate the old open cluster M67 using ultraviolet photometric data of Ultra-Violet Imaging Telescope in multi-filter far-UV bands. M67, well known for the presence of several blue straggler stars (BSS), has been ...
Sinha Ray, S; Ghosh, P; Chaudhuri, R. K; Chattopadhyay, S(American Institute of Physics, 2017-02)
The state-specific multireference perturbation theory (SSMRPT) with an improved virtual orbital complete active space configuration interaction (IVO-CASCI) reference function [called as IVO-SSMRPT] is used to investigate ...
Shantikumar, N. S; Bagare, S. P; Khatri, P; Sohn, B. J; Song, H.-J(Elsevier B.V, 2015-10-01)
Estimation of aerosol radiative forcing (ARF) was performed using a radiative transfer model (Rstar6b) along with physical and optical parameters of aerosols obtained from sky radiometer observation over Indian Astronomical ...