Showing astro-phShow all
3 papers · 1 filter
astro-ph2000
Line Formation in the Atmosphere of Brown Dwarf Gliese 229B: at 2.3 micron
Sujan Sengupta, Vinod Krishan
We investigate the formation of methane line at 2.3 in Brown Dwarf Gliese 229B. Two sets of model parameters with (a) K and , (b) $T_{\r…
astro-ph2000
Effect of Beam-Plasma Instabilities on Accretion Disk Flares
Vinod Krishan, Paul J. Wiita, S. Ramadurai
We show that a certain class of flare models for variability from accretion disk coronae are subject to beam-plasma instabilities. These instabilities can prevent significant direc…
astro-ph1999
Compton Scattering, Pair Annihilation and Pair Production in a Plasma
Vinod Krishan
The square of the four momentum of a photon in vacuum is zero. However, in an unmagnetized plasma it is equal to the square of the plasma frequency. Further, the electron-photon co…