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Relativistic Electron Increase During Chorus Wave Activities on the 6-8 March 2016 Geomagnetic Storm
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2017 (English)In: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 122, no 11, p. 11302-11319Article in journal (Refereed) Published
Abstract [en]

There was a geomagnetic storm on 6-8 March 2016, in which Van Allen Probes A and B separated by similar to 2.5 h measured increase of relativistic electrons with energies approximately several hundred keV to 1 MeV. Simultaneously, chorus waves were measured by both Van Allen Probes and Magnetospheric Multiscale (MMS) mission. Some of the chorus elements were rising tones, possibly due to nonlinear effects. These measurements are compared with a nonlinear theory of chorus waves incorporating the inhomogeneity ratio and the field equation. From this theory, a chorus wave profile in time and one-dimensional space is simulated. Test particle calculations are then performed in order to examine the energization rate of electrons. Some electrons are accelerated, although more electrons are decelerated. The measured time scale of the electron increase is inferred to be consistent with this nonlinear theory.

Place, publisher, year, edition, pages
AMER GEOPHYSICAL UNION , 2017. Vol. 122, no 11, p. 11302-11319
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Physical Sciences
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URN: urn:nbn:se:kth:diva-221888DOI: 10.1002/2017JA024540ISI: 000419938600025OAI: oai:DiVA.org:kth-221888DiVA, id: diva2:1179059
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QC 20180131

Available from: 2018-01-31 Created: 2018-01-31 Last updated: 2018-01-31Bibliographically approved

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Lindqvist, Per-Arne

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