@article{Stansby:2016:1/L16,
author = {Stansby, D and Horbury, TS and Chen, CHK and Matteini, L},
doi = {1/L16},
journal = {Astrophysical Journal Letters},
title = {Experimental determination of whistler wave dispersion relation in the solar wind},
url = {http://dx.doi.org/10.3847/2041-8205/829/1/L16},
volume = {829},
year = {2016}
}

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TY  - JOUR
AB  - The origins and properties of large-amplitude whistler wavepackets in the solar wind are still unclear. In this Letter, we utilize single spacecraft electric and magnetic field waveform measurements from the ARTEMIS mission to calculate the plasma frame frequency and wavevector of individual wavepackets over multiple intervals. This allows direct comparison of experimental measurements with theoretical dispersion relations to identify the observed waves as whistler waves. The whistlers are right-hand circularly polarized, travel anti-sunward, and are aligned with the background magnetic field. Their dispersion is strongly affected by the local electron parallel beta in agreement with linear theory. The properties measured are consistent with the electron heat flux instability acting in the solar wind to generate these waves.
AU  - Stansby,D
AU  - Horbury,TS
AU  - Chen,CHK
AU  - Matteini,L
DO  - 1/L16
PY  - 2016///
SN  - 2041-8213
TI  - Experimental determination of whistler wave dispersion relation in the solar wind
T2  - Astrophysical Journal Letters
UR  - http://dx.doi.org/10.3847/2041-8205/829/1/L16
UR  - http://hdl.handle.net/10044/1/40678
VL  - 829
ER  - 

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