Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 33, issue 10
Articles | Volume 33, issue 10
https://doi.org/10.5194/angeo-33-1285-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/angeo-33-1285-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 33, issue 10
Regular paper
 | 
22 Oct 2015
Regular paper |  | 22 Oct 2015

Wide-banded NTC radiation: local to remote observations by the four Cluster satellites

P. M. E. Décréau, S. Aoutou, A. Denazelle, I. Galkina, J.-L. Rauch, X. Vallières, P. Canu, S. Rochel Grimald, F. El-Lemdani Mazouz, and F. Darrouzet

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Short summary
We present here cases of wide banded Non Thermal Continuum (NTC) observed from the multi-point Cluster observatory. We point out that a large portion of the plasmasphere boundary layer, covering magnetic latitudes from 0 to above 30°, is radiating these radio waves. The radiation is confined inside multiple beams of small cone angles. We show how the spectral signature evolves, from integer harmonics of the electron gyrofrequency, when the observatory moves away from their sources.
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Dynamic processes in geospace