TITLE:
Estimation of Magnetospheric Plasma Parameters from Whistlers Observed at Low Latitudes
AUTHORS:
Mohd Altaf, Mohammad Mushtaq Ahmad, Jan Mohammad Banday
KEYWORDS:
Magnetosphere; Electron Temperature; Electric Field; Electron Density
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.3 No.4,
December
2,
2013
ABSTRACT:
Whistler observations during nighttimes made at low
latitude Indian ground stations Jammu (geomag. lat., 29°26'N;
L = 1.17), Nainital (geomag. lat., 19°1'N; L = 1.16) and
Varanasi (geomag. lat., 14°55'N; L = 1.11) are used to deduce electron temperatures and
electric field in the vicinity of the magnetospheric equator. The accurate
curve fitting and parameter estimation technique are used to compute nose
frequency and equatorial electron densities from the dispersion measurements of
short whistlers recorded at Jammu, Nainital and Varanasi. In this paper, our aim
is to estimate the Magnetospheric electron temperatures and electric field from
the dispersion analysis of short whistlers observed at low latitudes by using
different methods. The results obtained are in good agreement with the results
reported by other workers.