45 citations · 111 across the 8 of their papers we have counts for
8 papers
Halo mass function in scale invariant models
Swati Gavas, J S Bagla, Nishikanta Khandai +1
Sheth-Tormen mass function has been widely used to quantify the abundance of dark matter halos. It is a significant improvement over the Press-Schechter mass function as it uses el…
Gravitational Lensing of Core Collapse Supernova Gravitational Wave Signals
Rahul Ramesh, Ashish Kumar Meena, J. S. Bagla
We discuss the prospects of gravitational lensing of gravitational waves (GWs) coming from core-collapse supernovae (CCSN). As the CCSN GW signal can only be detected from within o…
Erratum: Nonlinear spherical perturbations in quintessence models of dark energy
Manvendra Pratap Rajvanshi, J. S. Bagla
We reported results of our study on non-linear spherical perturbations in quintessence models of dark energy. In the process of some follow up studies we discovered that a scaling…
Gravitational collapse and structure formation in an expanding universe with dark energy
Manvendra Pratap Rajvanshi, Tuneer Chakraborty, J. S. Bagla
Observations show that the expansion of the Universe is accelerating. This requires that the dominant constituent of matter in the Universe has some unusual properties like negativ…
Mass function of haloes: scale invariant models
J. S. Bagla, Nishikanta Khandai, Girish Kulkarni
Press-Schechter theory gives a simple, approximate functional form of the mass function of dark matter haloes. Sheth and Tormen (ST) refined this mass function to give an improved…
Neutral hydrogen at high redshifts as a probe of structure formation - III. Radio maps from N-Body simulations
J. S. Bagla, Biman Nath, T. Padmanabhan
Large inhomogeneities in neutral hydrogen in the universe can be detected at redshifts using the redshifted 21 cm line emission. We use cosmological N-Body simulations…
Crisis in Cosmology : Observational Constraints on Omega and H_0
J. S. Bagla, T. Padmanabhan, J. V. Narlikar
Thanks to new technology of observations and fresh inputs from particle physics, cosmology has advanced on both observational and theoretical fronts. It is therefore opportune that…
Nonlinear evolution of density perturbations using approximate constancy of gravitational potential
J. S. Bagla, T. Padmanabhan
During the evolution of density inhomogeneties in an , matter dominated universe, the typical density contrast changes from to . However, durin…