Wave Reflection in the Solar Atmosphere

Varun Chaturmutha; Bernhard Fleck; Stuart Jefferies

Wave Reflection in the Solar Atmosphere

Solar and Stellar Astrophysics 2024-03-29 v1

Authors: Varun Chaturmutha , Bernhard Fleck , Stuart Jefferies

Abstract

We present evidence supporting wave reflection in the lower solar chromosphere based on helioseismic analysis of multi-height Doppler data. This evidence is derived through a wave propagation model that incorporates both upward- and downward-traveling (reflected) waves. Moreover, we find that the height of the reflecting region varies with magnetic field strengths in a way that suggests a connection with the the plasma $\beta\sim1$ region. We measure an effective reflection coefficient of $13\,\%$ in a magnetically quiet region of the Sun.

Keywords

solar physics solar magnetic field negative refraction

Cite

@article{arxiv.2403.18988,
  title  = {Wave Reflection in the Solar Atmosphere},
  author = {Varun Chaturmutha and Bernhard Fleck and Stuart Jefferies},
  journal= {arXiv preprint arXiv:2403.18988},
  year   = {2024}
}

Comments

12 pages, 4 figures, accepted for publication in ApJ

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