Observations of locally excited waves in the low solar atmosphere using the Daniel K. Inouye Solar Telescope

We present an interpretation of the recent Daniel K. Inouye Solar Telescope (DKIST) observations of propagating wave fronts in the lower solar atmosphere. Using MPS/University of Chicago MHD radiative magnetohydrodynamic simulations spanning the solar photosphere, the overshoot region, and the lower chromosphere, we identify three acoustic-wave source mechanisms, each occur at a different atmospheric height. We synthesize the DKIST Visible Broadband Imager G-band, blue-continuum, and Ca ii K signatures of these waves at high spatial and temporal resolution, and conclude that the wave fronts observed by DKIST likely originate from acoustic sources at the top of the solar photosphere overshoot region and in the chromosphere proper. The overall importance of these local sources to the atmospheric energy and momentum budget of the solar atmosphere is unknown, but one of the excitation mechanisms identified (upward propagating shock interaction with down-welling chromospheric plasma resulting in acoustic radiation) may be an important shock dissipation mechanism. Additionally, the observed wave fronts may prove useful for ultralocal helioseismological inversions and promise to play an important diagnostic role at multiple atmospheric heights.

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Author S. M. Bahauddin
Fischer, C. E.
Rast, M. P.
I. Milic
Woeger, F.
Rempel, Matthias
Keys, P. H.
Rimmele, T. R.
Publisher UCAR/NCAR - Library
Publication Date 2024-08-01T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-10T19:59:44.379539
Metadata Record Identifier edu.ucar.opensky::articles:27422
Metadata Language eng; USA
Suggested Citation S. M. Bahauddin, Fischer, C. E., Rast, M. P., I. Milic, Woeger, F., Rempel, Matthias, Keys, P. H., Rimmele, T. R.. (2024). Observations of locally excited waves in the low solar atmosphere using the Daniel K. Inouye Solar Telescope. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d75q5198. Accessed 03 August 2025.

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