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A Radio Study Of Gas Loss Processes In Nearby Galaxies
(2008-10-17)
The work in this thesis involves detailed multi-frequency radio continuum
(from 325 MHz to 15 GHz) and Hi spectroscopic studies of a few represent
tative nearby galaxies which are experiencing gas-loss from their disks ...
Origin Of The Extragalactic Gamma-Ray Background
(2013-10-01)
It is evident that the origin of EGRB is not well established. In this thesis I examine the unresolved discrete origin of EGRB. The contribution from normal galaxies, starburst galaxies and AGNs to the EGRB is examined. ...
Warped Galaxies : Recovery Of Pattern Speed, Velocity Field And The Warp Equation
(2015-08-04)
Pattern speed is an important parameter of the density wave theory for spiral galaxies. In this thesis we have determined the pattern speed for warped galaxies (flat galaxies being a special case of this generalization) ...