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

0471605 - ÚFA 2017 AT eng A - Abstrakt
Taubenschuss, Ulrich - Demekhov, A. - Santolík, Ondřej
Interpretation of whistler mode chorus observations with the Backward Wave Oscillator model.
Abstract book of the 8th International Workshop on Planetary, Solar and Heliospheric Radio Emissions (PRE 8). Vienna: Austrian Academy of Sciences, 2016. s. 42.
[International Workshop on Planetary, Solar and Heliospheric Radio Emissions (PRE 8) /8./. 25.10.2016-27.10.2016, Seggauberg near Graz]
Institucionální podpora: RVO:68378289
Klíčová slova: whistler mode chorus * backward wave oscillator * THEMIS
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
http://pre8.oeaw.ac.at/files/Abstract_book.pdf

We present several examples of whistler mode chorus observations from the equatorial source
region made by the THEMIS (Time History of Events and Macroscale Interactions during Substorms)
spacecraft. Electromagnetic analysis of the Poynting vector reveals two groups of oppositely
propagating chorus elements, along and against the direction of the ambient magnetic field.
Additionally, there is a shift in frequency visible between both groups. We interpret these features in
the frame of the Backward Wave Oscillator (BWO) model as a possible generation mechanism for
chorus emission.
Trvalý link: http://hdl.handle.net/11104/0268966