Wave Reflection in the Solar Atmosphere

Varun Chaturmutha; Bernhard Fleck; Stuart M. Jefferies

doi:10.3847/1538-4357/ad36c5

The Astrophysical Journal (Jan 2024)

Wave Reflection in the Solar Atmosphere

Varun Chaturmutha,
Bernhard Fleck,
Stuart M. Jefferies

Affiliations

Varun Chaturmutha: ORCiD; Georgia State University , 25 Park Place, Atlanta, GA 30303, USA ; [email protected]
Bernhard Fleck: ORCiD; ESA Science and Operations Department, c/o NASA/GSFC Code 671, Greenbelt, MD 20071, USA
Stuart M. Jefferies: ORCiD; Georgia State University , 25 Park Place, Atlanta, GA 30303, USA ; [email protected]; University of Hawaii , 34, Ohia Ku Street, Pukalani, HI 96768, USA

DOI: https://doi.org/10.3847/1538-4357/ad36c5
Journal volume & issue: Vol. 966, no. 2
p. 200

Abstract

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We present evidence supporting wave reflection in the lower solar chromosphere based on helioseismic analysis of multi-height Doppler data from the Solar Dynamics Observatory/Helioseismic and Magnetic Imager and the Magneto-Optical filters at Two Heights II instrument. 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 plasma β ∼ 1 region. We measure an effective reflection coefficient of 13% in a magnetically quiet region of the Sun.

Published in The Astrophysical Journal

ISSN: 1538-4357 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/0004-637X

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