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arXiv · 1906.01746

Heating of a Quiet Region of the Solar Chromosphere by Ion and Neutral Acoustic Waves

B. Kuźma·D. Wójcik·K. Murawski
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Abstract

Using high-resolution numerical simulations we investigate the plasma heating driven by periodic two-fluid acoustic waves that originate at the bottom of the photosphere and propagate into the gravitationally stratified and partially ionized solar atmosphere. We consider ions+electrons and neutrals as separate fluids that interact between themselves via collision forces. The latter play an important role in the chromosphere, leading to significant damping of short-period waves. Long-period waves do not essentially alter the photospheric temperatures, but they exhibit the capability of depositing a part of their energy in the chromosphere. This results in up about a five times increase of ion temperature that takes place there on a time-scale of a few minutes. The most effective heating corresponds to waveperiods within the range of about 30-200 s with a peak value located at 80 s. However, we conclude that for the amplitude of the driver chosen to be equal to 0.1 km s$^{-1}$, this heating is too low to balance the radiative losses in the chromosphere.

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B. Kuźma, D. Wójcik, K. Murawski. 2019-06-04. Heating of a Quiet Region of the Solar Chromosphere by Ion and Neutral Acoustic Waves. https://doi.org/10.3847/1538-4357/ab1b4a

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