57 citations · 667 across the 51 of their papers we have counts for
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Detection of Axion Stars in Galactic Magnetic Fields
Kuldeep J. Purohit, Jitesh R. Bhatt, Subhendra Mohanty +1
We perform a linear mode analysis of a uniformly distributed cloud of axion-like particles (ALPs) embedded in a magnetized intergalactic medium, in order to investigate the stabili…
Formation of a Bose Star in a Rotating Cloud
Kuldeep J. Purohit, Pravin Kumar Natwariya, Jitesh R. Bhatt +1
In this paper, we study the evolutions of a self-gravitating cloud of bosonic dark matter with finite angular momentum and self-interaction. This is achieved by using the sixth-ord…
Rotating Scalar Field and Formation of Bose Stars
Kuldeep J. Purohit, Pravin Kumar Natwariya, Jitesh R. Bhatt +1
We study numerical evolutions of an initial cloud of self-gravitating bosonic dark matter with finite angular momentum and self-interaction in kinetic regime. It is demonstrated th…
EDGES signal in presence of magnetic fields
Pravin Kumar Natwariya, Jitesh R. Bhatt
We study the 21-cm differential brightness temperature in the presence of primordial helical magnetic fields for redshift . We argue that the -effect that sets in at ea…
Magnetic fields in a hot dense neutrino plasma and the Gravitational Waves
Arun Kumar Pandey, Pravin Kumar Natwariya, Jitesh R Bhatt
In the present work, we have studied the spectrum of the primordial gravitational waves due to magnetic instability in the presence of neutrino asymmetry. The magnetic instability…
Viscosity in cosmic fluids
Pravin Kumar Natwariya, Jitesh R Bhatt, Arun Kumar Pandey
The effective theory of large-scale structure formation based on CDM paradigm predicts finite dissipative effects in the resulting fluid equations. In this work, we study how vi…
Baryon-Dark matter interaction in presence of magnetic fields in light of EDGES signal
Jitesh R. Bhatt, Pravin Kumar Natwariya, Alekha C. Nayak +1
We have shown that in presence of a cosmic magnetic field the bounds on baryon dark matter cross-section (), dark-matter mass () and values of the magnetic field ($B_0…
Viscous dark matter and 21 cm cosmology
Jitesh R. Bhatt, Arvind Kumar Mishra, Alekha C. Nayak
The EDGES experiment has detected the global absorption signal of 21 cm line at in cosmic dawn era and reported its amplitude larger than the standard cosmological predic…
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…
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…
Origin and dynamics of the Primordial Magnetic field in a parity violating plasma
Arun Kumar Pandey
In this thesis, we have studied the generation and evolution of the magnetic field in the early Universe. We investigated the generation of magnetic fields in the presence of chira…
Viscous Self Interacting Dark Matter and Cosmic Acceleration
Abhishek Atreya, Jitesh R. Bhatt, Arvind Mishra
Self interacting dark matter (SIDM) provides us with a consistent solution to certain astrophysical observations in conflict with collision-less cold DM paradigm. In this work we e…
Chiral Battery, scaling laws and magnetic fields
Sampurn Anand, Jitesh R. Bhatt, Arun Kumar Pandey
We study the generation and evolution of magnetic field in the presence of chiral imbalance and gravitational anomaly which gives an additional contribution to the vortical current…
Primordial magnetic field and kinetic theory with Berry curvature
Jitesh R. Bhatt, Arun Kumar Pandey
We study the generation of magnetic field in the primordial plasma of the standard model (SM) particles at temperature ~TeV much higher than the electroweak scale. It is assu…
Attractor behaviour in ELKO cosmology
Abhishek Basak, Jitesh R. Bhatt, S. Shankaranarayanan +1
We study the dynamics of ELKO in the context of accelerated phase of our universe. To avoid the fine tuning problem associated with the initial conditions, it is required that the…
Lorentz invariant dark-spinor and inflation
Abhishek Basak, Jitesh R. Bhatt
We investigate the possibility of the inflation driven by a Lorentz invariant non-standard spinor field. As these spinors are having dominant interaction via gravitational field on…