5 citations · 5 across the 3 of their papers we have counts for
4 papers
Can the rotation of the dark matter halo of our galaxy be detected through its effect on the cosmic microwave background polarisation?
Partha Nag, Somnath Bharadwaj, Sayan Kar
The proposition that dark matter halos possess angular momentum, though widely accepted, is a theoretical prediction which has, till date, not been observationally verified. The gr…
A simple mechanical analog of the field theory of tachyon matter
Sayan Kar
In this brief note we show that the zero dimensional version of the field theory of tachyon matter proposed by Sen, provides an action integral formulation for the motion of a part…
Asymmetrically warped R=0 braneworlds
Sayan Kar
A new family of five dimensional, R=0 braneworlds with asymmetric warp factors is proposed. Beginning with the invariance of the Ricci scalar for the general class of asymmetricall…
Generalised Raychaudhuri Equations for Strings and Membranes
Sayan Kar
A recent generalisation of the Raychaudhuri equations for timelike geodesic congruences to families of dimensional extremal, timelike, Nambu--Goto surfaces embedded in an d…