First PIC simulations capture the whistler heat-flux instability and show its saturation by reduced electron drifts and induced temperature anisotropies.
Observed instability constraints on electron heat flux in the solar wind
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abstract
We present for the first time the joint distribution of electron heat flux and electron plasma beta, and the joint distribution of core electron drift velocity and electron plasma beta using a statistically large dataset of solar wind electrons at 1AU. We calculate the growth rates of linear instabilities and show compelling experimental evidence that the heat-flux-driven Alfv{\'e}n instabilities constrain the electron core drift, and therefore the electron heat flux, in low-beta plasmas. This result is relevant to understanding energy transport in low-beta solar/stellar coronae and winds.
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physics.plasm-ph 1years
2019 1verdicts
CONDITIONAL 1representative citing papers
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Particle-in-cell simulations of the whistler heat-flux instability in the solar wind conditions
First PIC simulations capture the whistler heat-flux instability and show its saturation by reduced electron drifts and induced temperature anisotropies.