Relativistic electron increase during chorus wave activities on the 6-8 March 2016 geomagnetic storm

TitleRelativistic electron increase during chorus wave activities on the 6-8 March 2016 geomagnetic storm
Publication TypeJournal Article
Year of Publication2017
AuthorsMatsui, H, Torbert, RB, Spence, HE, Argall, MR, Alm, L, Farrugia, CJ, Kurth, WS, Baker, DN, Blake, JB, Funsten, HO, Reeves, GD, Ergun, RE, Khotyaintsev, YV, Lindqvist, P-A
JournalJournal of Geophysical Research: Space Physics
Date Published10/2017
Keywordschorus waves; Geomagnetic storm; relativistic electrons; Van Allen Probes
AbstractThere was a geomagnetic storm on 6–8 March 2016, in which Van Allen Probes A and B separated by ∼2.5 h measured increase of relativistic electrons with energies ∼ 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.
URLhttp://onlinelibrary.wiley.com/doi/10.1002/2017JA024540/full
DOI10.1002/2017JA024540
Short TitleJ. Geophys. Res. Space Physics


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