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6 papers · 2 filters
Study of warm inflationary models and their parameter estimation from CMB
Richa Arya, Raghavan Rangarajan
Observations of the temperature anisotropies in the Cosmic Microwave Background (CMB) radiation show that the models of inflation with the monomial potentials are inconsistent with…
Study in the noncanonical domain of Goldstone inflation
Sukannya Bhattacharya, Mayukh R. Gangopadhyay
Recent observations of the cosmic microwave background (CMB) indicate that a successful theory of cosmological inflation needs to have flat potential of the inflaton scalar field.…
Viscous Self Interacting Dark Matter Cosmology For Small Redshift
Abhishek Atreya, Jitesh R. Bhatt, Arvind Kumar Mishra
The viscosity of dark matter in cosmological models may cause an accelerated expansion and when this effect is sufficiently large, it can explain the dark energy. In this work, att…
PeV IceCube signals and Dark Matter relic abundance in modified cosmologies
G. Lambiase, S. Mohanty, A. Stabile
The discovery by the IceCube experiment of a high-energy astrophysical neutrino flux with energies of the order of PeV, has opened new scenarios in astroparticles physics. A possib…
Testing Dark energy models in the light of tension
Gaetano Lambiase, Subhendra Mohanty, Ashish Narang +1
It has been pointed out that there exists a tension in measurement between CMB and LSS observation. In this paper we show that observations can be used to test…
Chiral plasma instability and primordial Gravitational wave
Sampurn Anand, Jitesh R. Bhatt, Arun Kumar Pandey
It is known that cosmic magnetic field, if present, can generate anisotropic stress in the plasma and hence, can act as a source of gravitational waves. These cosmic magnetic field…