Space-time evolution of electron-beam driven electron holes and their effects on the plasma (2008)
We report here further results from the three-dimensional particle-in-cell simulations of the electron-beam driven electron holes. We focus here on (i) the transformation of oscillatory waves driven...
Electrodynamics in a very thin current sheet leading to magnetic reconnection (2008)
Singh, N., Deverapalli, C., Khazanov, G.
We study the formation of a very thin current sheet (CS) and associated plasma electrodynamics using three-dimensional (3-D) particle-in-cell simulations with ion to electron mass ratio M/m=1836. The...
Dynamical behavior of U-shaped double layers: cavity formation and filamentary structures (2008)
Singh, N., Deverapalli, C., Rajagiri, A., Khazanov, I.
Observations from the Polar and FAST satellites have revealed a host of intriguing features of the auroral accelerations processes in the upward current region (UCR). These features include: (i)...
Instabilities in a thin current sheet and their consequences (2008)
Using a fully 3-D particle in-cell simulation, we studied the electrodynamics of a thin current sheet (CS). Starting with a uniform plasma and anti-parallel magnetic field, Harris equilibrium is...
Spiky parallel electrostatic ion cyclotron and ion acoustic waves (2008)
Reddy, R. V., Lakhina, G. S., Singh, N., Bharuthram, R.
One of the interesting observations from the FAST satellite is the detection of strong spiky waveforms in the parallel electric field in association with ion cyclotron oscillations in the...
Source strength of explosives on munitions contaminated sites and risk assessment (2006)
Hennecke, D., Singh, N., Hörner, J., Hund-Rinke, K., Kördel, W.
"Homogeneity of Variance Test" For the Comparison of Two or More Spectra (1995)
Maharaj, E. A., Singh, N., Inder, Brett A.
Let {Zjt : j = 1,2...k, t = 0 ±1, ±2,.......} be k independent stationary processes, with spectral density functions Szj(w) ,j = 1.2....k. In many real world situations there is a need to compare...