Observations of Locally Excited Waves in the Low Solar Atmosphere Using the Daniel K. Inouye Solar Telescope Journal Article uri icon

Overview

abstract

  • Abstract; 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.

publication date

  • August 1, 2024

has restriction

  • gold

Date in CU Experts

  • August 7, 2024 6:13 AM

Full Author List

  • Bahauddin SM; Fischer CE; Rast MP; Milic I; Woeger F; Rempel M; Keys PH; Rimmele TR

author count

  • 8

Other Profiles

International Standard Serial Number (ISSN)

  • 2041-8205

Electronic International Standard Serial Number (EISSN)

  • 2041-8213

Additional Document Info

start page

  • L1

end page

  • L1

volume

  • 971

issue

  • 1