Interpretation of whistler mode chorus observations with the Backward Wave Oscillator model

0487646 - ÚFA 2019 RIV AT eng C - Conference Paper (international conference)
Taubenschuss, Ulrich - Demekhov, A. G. - Santolík, Ondřej
Interpretation of whistler mode chorus observations with the Backward Wave Oscillator model.
Planetary Radio Emissions VIII. Vienna: Austrian Academy of Sciences Press, 2017 - (Fischer, G.; Mann, G.; Panchenko, M.; Zarka, P.), s. 233-242. ISBN 978-3-7001-8392-1.
[International Workshop on Planetary, Solar and Heliospheric Radio Emissions (PRE 8) /8./. Seggauberg near Graz (AT), 25.10.2016-27.10.2016]
R&D Projects: GA MŠMT(CZ) LH15304
Grant - others:AV ČR(CZ) AP1401
Program: Akademická prémie - Praemium Academiae
Institutional support: RVO:68378289
Keywords : whistler mode chorus * backward wave oscillator * THEMIS
OECD category: Fluids and plasma physics (including surface physics)
http://austriaca.at/pre

Observations of whistler–mode chorus made by the THEMIS spacecraft inside the equatorial chorus source region often exhibit the following peculiar features. Two groups of chorus elements are visible simultaneously which are approaching the spacecraft from two different directions: either along or against the direction of the ambient magnetic field. Furthermore, both groups are slightly shifted in frequency with respect to each other and elements are of different intensities. We interpret these features in the frame of the backward–wave oscillator theory by means of two exemplary events, yielding insight into the nonlinear generation mechanism and the specific source–observer geometry during the time of observation.

Permanent Link: http://hdl.handle.net/11104/0282292