Earth Planets Space, Vol. 56 (No. 10), pp. 979-987, 2004
Kalpana Singh1, R. P. Singh1, and Orsolya E. Ferencz2
1Atmospheric Research laboratory, Department of Physics, Banaras Hindu University, Varanasi, India-221 005
2Department of Geophysics, Eotvos University, Budapest, H-1117, Hungary
(Received March 15, 2004; Revised June 20, 2004; Accepted July 22, 2004)
Representing lightning discharge current source by a Dirac delta function, Maxwell's equations are solved to derive the expression for wave-electric field as a function of frequency and distance including the effect of inter-particle collisions. The exact time-dependence of the propagating non-monochromatic signal for the realistic magnetospheric model is computed for low latitude stations (in India). The computation is extended for the wave propagating through different regions of the magnetosphere and results are compared with the measured data. Points of agreements and differences are illuminated.
Key words: Simulation, magnetoplasma, whistler, dynamic spectra.