Identification of sources of Pc1 geomagnetic pulsations on the basis of proton aurora observations

Details Identification of sources of Pc1 geomagnetic pulsations on the basis of proton aurora observations Identification of sources of Pc1 geomagnetic pulsations on the basis of proton aurora observations

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cosre..46..335y&link_type=abstract

Cosmic Research, Volume 46, Issue 4, pp.335-338

Physics

1

94.30.Ms, Magnetic Pulsations

Scientific paper

The relationship between proton aurora and geomagnetic pulsations Pc1, which are an indicator of development of ion-cyclotron instability in the equatorial magnetosphere, are studied on the basis of the observations of proton aurora from the IMAGE satellite, observations of particle fluxes onboard the low-orbiting NOAA satellites, and geomagnetic pulsation observations at the Lovozero observatory. A conclusion is drawn that the subauroral spots in the proton emission projected into the magnetosphere near the plasmapause are two-dimensional images at the ionospheric “screen” of the region of intense scattering of energetic protons into the loss cone at the development of an ion-cyclotron instability.

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