Relationship Between Alfvenic Fluctuations and Heavy Ion Heating in the Cusp at 1 Re

Details Relationship Between Alfvenic Fluctuations and Heavy Ion Heating in the Cusp at 1 Re Relationship Between Alfvenic Fluctuations and Heavy Ion Heating in the Cusp at 1 Re

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsm41a..05c&link_type=abstract

American Geophysical Union, Spring Meeting 2008, abstract #SM41A-05

Physics

2706 Cusp, 7845 Particle Acceleration, 7857 Stochastic Phenomena (3235, 3265, 4475), 7867 Wave/Particle Interactions (2483, 6984)

Scientific paper

We look at the effect of heavy ion heating from their coupling with observed broadband (BB-ELF) emissions. These wave fluctuations are common to many regions of the ionosphere and magnetosphere and have been described as spatial turbulence of dispersive Alfven waves with short perpendicular wavelengths. With Polar passing through the cusp at 1 Re in the Spring of 1996, we show the correlation of their wave power with mass- resolved O+ derived heating rates. This relationship led to the example study of the coupling of the thermal O+ ions, large field-aligned currents, and the bursty electric fields. We then demonstrate the role of these measurements to stochastic ion heating. Finally we will show how the wave power may define the observed density cavities.

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