English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Global: Zendy Plus monthly

Solar mid-IR observations in the 8-15 micrometer band continuum with moderateangular resolution (18 arcseconds) reveal the presence of bright structuressurrounding sunspots. These plage-like features present good association withcalcium CaII K1v plages and active region magnetograms. We describe a newoptical setup with reflecting mirrors to produce solar images on the focalplane array of uncooled bolometers of a commercial camera preceded by germaniumoptics. First observations of a sunspot on September 11, 2006 show a mid-IRcontinuum plage exhibiting spatial distribution closely associated with CaIIK1v line plage and magnetogram structures. The mid-IR continuum bright plage isabout 140 K hotter than the neighboring photospheric regions, consistent withhot plasma confined by the magnetic spatial structures in and above the activeregionComment: 5 pages, 4 figures. Accepted by PAS

Association of Mid-Infrared Solar Plages with Calcium K Line Emissions and Magnetic Structures