4 papers
Shedding Light on Dark Matter and Neutrino Interactions from Cosmology
Arnab Paul, Arindam Chatterjee, Anish Ghoshal +1
In CDM cosmology, Dark Matter (DM) and neutrinos are assumed to be non-interacting. However, it is possible to have scenarios, where DM-neutrino interaction may be present, l…
Estimating weak lensing convergence correlation of Type-Ia supernovae from 5-year SNLS data by internal error estimate technique
Ayan Mitra, Arnab Paul, Barun Pal +1
We report non-zero weak lensing convergence correlation signal of Type-Ia supernovae from 5-year Supernovae Legacy Survey data. For our analysis we utilize 296 supernovae magnifica…
Non-thermal production of Dark Matter after Inflation
Nicolás Bernal, Arindam Chatterjee, Arnab Paul
The existence of Dark Matter (DM) has been well established from various cosmological and astrophysical evidences. However, the particle properties of DM are largely undetermined a…
Inflation, (P)reheating and Neutrino Anomalies: Production of Sterile Neutrinos with Secret Interactions
Arnab Paul, Anish Ghoshal, Arindam Chatterjee +1
A number of experimental anomalies involving neutrinos hint towards the existence of at least an extra (a very light) sterile neutrino. However, such a species, appreciably mixing…