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On the origin of high m magnetospheric waves

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>3/02/2010
<mark>Journal</mark>Journal of Geophysical Research
Number of pages12
<mark>Original language</mark>English


A survey of Advanced Rio-Imaging Experiment in Scandinavia data reveals evidence for a previously overlooked generation mechanism of high azimuthal wave number magnetospheric waves. Here we present observations of pulsating cosmic noise absorption with azimuthal wave numbers as high as 380, suggestive of precipitation modulation by magnetospheric waves. Dispersion relations of the small-scale precipitation pulsations are indicative of the proposed origin. Previous studies of magnetospheric waves, together with data from the Charge And Mass Magnetospheric Ion Composition Experiment (Magnetospheric Ion Composition Sensor) instrument aboard the Polar spacecraft, provide support for the theory.

Bibliographic note

Copyright (2010) American Geophysical Union. Further reproduction or electronic distribution is not permitted