Chromospheric horizontal propagating shock waves revealed by fast cadence imaging in Ca II K with DKIST's Visible Broadband Imager
Informazioni aggiuntive
Autori
Fischer C.,
Woeger F.,
Rimmele T.,
Keys P.,
Steiner O.,
Gangadharan V.,
Jafarzadeh S.,
Canivete Cuissa J. R.
Tipo
Contributo in atti di conferenza
Anno
2023
Lingua
Inglese
Abstract
The Daniel K. Inouye Solar Telescope is currently acquiring firstscience data as part of its Operations Commissioning Phase.High-resolution, fast-cadence imaging in the chromospheric Ca IIK filter of the Visible Broadband Imager reveals signatures ofbright arches emanating radially from the locations of G-bandbright points. The G-band bright points denote small-scalemagnetic elements harboring strong magnetic fields. Comparisonwith 3-D simulations suggest that the traveling bright archesare acoustic waves or shock fronts, triggered by the movementsof magnetic elements. Inspecting several examples of the eventswe indeed see the photospheric bright points changing theirappearance and position, indicating either a horizontalmovement, perhaps swaying, or rotation and seem to be the sourcelocation for the bright arches.
Atti di conferenza
AAS/Solar Physics Division Meeting
Collana
AAS/Solar Physics Division Meeting
Pagina inizio
407.03-
