Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005astl...31..422m&link_type=abstract
Astronomy Letters, vol. 31, Issue 6, p.422-426
Astronomy and Astrophysics
Astronomy
1
Radio Emission - Cyclotron Maser - Magnetosphere - Ionosphere
Scientific paper
A statistical analysis of the auroral kilometric radiation (AKR) measurements in the POLRAD experiment on the INTERBALL-2 satellite has revealed a dependences of the size and location of the AKR generation region on geomagnetic activity: the generation region rises upward and expands with increasing magnetic disturbances. Based on our two-year measurements, we found seasonal AKR intensity variations: the AKR maximum and minimum are observed in winter and summer, respectively. The seasonal variations and the dependence of the spectrum on geomagnetic activity are assumed to have a common physical nature—the background-plasma density variations in the region of the AKR source attributable to plasma flows from the ionosphere into the magnetosphere.
Hanasz Jan
Mogilevsky Mikhail
Moiseenko I. L.
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