454 citations
- Inter-University Centre for Astronomy and AstrophysicsIN16 papers
- Indian Institute of Technology KharagpurIN9 papers
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- Center for Astrophysics Harvard & SmithsonianUS7 papers
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11 papers · 1 filter
Interacting Dark Energy in a closed universe
Eleonora Di Valentino, Alessandro Melchiorri, Olga Mena +2
Recent measurements of the Cosmic Microwave Anisotropies power spectra measured by the Planck satellite show a preference for a closed universe at more than Confidence Leve…
First multi-redshift limits on post-Epoch of Reionization (post-EoR) 21 cm signal from z = 1.96 - 3.58 using uGMRT
Arnab Chakraborty, Abhirup Datta, Nirupam Roy +8
Measurement of fluctuations in diffuse HI 21 cm background radiation from the post-reionization epoch (z < 6) is a promising avenue to probe the large-scale structure of the Univer…
BH Mass, Jet and Accretion Disk Connection: An Analysis of Radio-loud and Radio-quiet Quasars
Avinanda Chakraborty, Anirban Bhattacharjee
Surveys have shown radio-loud (RL) quasars constitute - of the total quasar population. However, it is unknown if the radio-loud fraction (RL quasars/Total quasars) r…
Localization, transport and edge states in a two-strand ladder network in an aperiodically staggered magnetic field
Sk Sajid, Arunava Chakrabarti
We investigate the spectral and transport properties of a two-arm tight-binding ladder perturbed by an external magnetic field following an Aubry-André-Harper profile. The varying…
Prediction on Properties of Rare-earth 2-17-X Magnets Ce2Fe17-xCoxCN : A Combined Machine-learning and Ab-initio Study
Anita Halder, Samir Rom, Aishwaryo Ghosh +1
We employ a combination of machine learning and first-principles calculations to predict magnetic properties of rare-earth lean magnets. For this purpose, based on training set con…
Forecasting the daily and cumulative number of cases for the COVID-19 pandemic in India
Subhas Khajanchi, Kankan Sarkar
The ongoing novel coronavirus epidemic has been announced a pandemic by the World Health Organization on March 11, 2020, and the Govt. of India has declared a nationwide lockdown f…