Physics
Scientific paper
Aug 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999injpb..73..593p&link_type=abstract
Indian J. Phys., Part B, Vol. 73B, No. 4, p. 593 - 604
Physics
2
Uranus Magnetosphere: Wave Propagation
Scientific paper
Strong electromagnetic and electrostatic plasma turbulence, low frequency radio emissions and dust impacts were readily detected during the Voyager 2 encounter of Uranus. Examination of magnetic field data recorded in closed proximity to the Uranian bow shock reveals a series of whistler wave events. Some of the waves exhibited propagation parallel to the magnetic field but most showed oblique propagation. a.c. electric field observations at magnetospheric heights and shock regions have also been reported along and perpendicular to the magnetic field. In the present paper, oblique whistler mode instabilities have been analyzed having [k11 & k1] wave numbers for a generalized drifted distribution function, reducible to bi-Maxwellian and loss-cone distribution in the presence of perpendicular a.c. electric field by method of characteristic solution. Using details of particle trajectories, dispersion relation and growth rate have been evaluated. Results have been discussed and applied to the magnetosphere of Uranus.
Pandey R. P.
Pandey R. S.
Singh Kesar
Singh Manoj K.
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