4 papers
Neutral hydrogen at high redshift: probing structure formation
J. S. Bagla
Large inhomogeneities in neutral hydrogen in the universe can be detected at redshifts using the redshifted 21cm line emission from atomic hydrogen. This paper reviews…
Evolution of Galaxy Clustering
J. S. Bagla
We show that the galaxy correlation function does not evolve in proportion with the correlation function of the underlying mass distribution. Earliest galaxies cluster very strongl…
An Indicator of Nonlinear Gravitational Clustering
J. S. Bagla
Alignment of velocity and acceleration before shell crossing, and later misalignment are used to define velocity contrast, an indicator of dynamical state of matter undergoing grav…
Evolution Of Gravitational Potential In The Quasilinear And Nonlinear Regimes
J. S. Bagla, T. Padmanabhan
We study the evolution of the power spectrum of gravitational potential during the nonlinear clustering in an matter dominated phase. N-body simulations suggest that the pote…