Auroral Kilometric Radiation in the cusp region of the Earths magnetosphere

Details Auroral Kilometric Radiation in the cusp region of the Earths magnetosphere Auroral Kilometric Radiation in the cusp region of the Earths magnetosphere

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010eguga..1212749r&link_type=abstract

EGU General Assembly 2010, held 2-7 May, 2010 in Vienna, Austria, p.12749

Physics

Scientific paper

The "classical" Auroral Kilometric Radiation (AKR) generates in auroral region by cyclotron maser instability and the energy source of it - energetic particles injected from the tail to inner region of magnetosphere. The similar emission are observed in the cusp region. We use measurements of electromagnetic emissions in this region at frequency from 4 kHz to 1 MHz carried by POLRAD experiment onboard INTERBALL-2 spacecraft. It appears that: i the intensity of radio emissions in cusp is less then those in the auroral region; ii Dynamical spectrogram of emissions observed in cusp reveals structures with down and up going central frequencies which can allow to estimate the dynamics of source regions where AKR is generated.

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