Shahin Jafarzadeh

NameShahin Jafarzadeh
AffiliationRosseland Centre for Solar Physics, University of Oslo
TitleGlobal p-modes in the solar chromosphere at high resolution
AuthorsShahin Jafarzadeh
AbstractThe solar chromosphere is historically known to be dominated by ~ 3-min oscillations of acoustic/magneto-acoustic waves. However, recent studies of the p-modes in the upper chromosphere have also revealed significant power suppression at the 3-min characteristic periodicity. Here, we present a thorough study of such global oscillations from observations with the Atacama Large Millimeter/submillimeter Array (ALMA) and Swedish 1-m Solar Telescope (SST), as well as from numerical simulations with Bifrost. We find that the presence or absence of the dominant periodicities depends on the solar regions captured by the observations, linked to their underlying magnetic topology.