Interball-2 observations of auroral hiss and the aurora dynamics.

Details Interball-2 observations of auroral hiss and the aurora dynamics. Interball-2 observations of auroral hiss and the aurora dynamics.

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999czjph..49..657t&link_type=abstract

Czech. J. Phys., Vol. 49, No. 4a, p. 657 - 666

Physics

Aurorae

Scientific paper

Interball-2 auroral hiss observations obtained during two polar region crossings on December 3 and 11, 1996 are presented. Strong variations of auroral hiss intensity and cutoff frequency correlating with auroral dynamics were observed well poleward from the auroral oval. The auroral hiss intensity bursts correlated with intensifications of aurora arcs as well as with magnetic disturbances. The cutoff frequency of auroral hiss depends on the distance between aurora and satellite, it decreases when the distance decreases and vice versa. Such behavior of cutoff frequency can be explained by propagation in the whistler mode at wave normal angles near the resonance cone from a moving spatially localized source.

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