Association of mid-infrared solar plages with Calcium K line emissions and magnetic structures

Simple item page
dc.creatorMarcon, R.
dc.creatorKaufmann, P.
dc.creatorMelo, A. M.
dc.creatorKudaka, A. S.
dc.creatorTandberg-Hanssen, E.
dc.date2007-08-16
dc.date2007-10-30
dc.date.accessioned2026-07-07T09:33:02Z
dc.date.available2026-07-07T09:33:02Z
dc.descriptionSolar mid-IR observations in the 8-15 micrometer band continuum with moderate angular resolution (18 arcseconds) reveal the presence of bright structures surrounding sunspots. These plage-like features present good association with calcium CaII K1v plages and active region magnetograms. We describe a new optical setup with reflecting mirrors to produce solar images on the focal plane array of uncooled bolometers of a commercial camera preceded by germanium optics. First observations of a sunspot on September 11, 2006 show a mid-IR continuum plage exhibiting spatial distribution closely associated with CaII K1v line plage and magnetogram structures. The mid-IR continuum bright plage is about 140 K hotter than the neighboring photospheric regions, consistent with hot plasma confined by the magnetic spatial structures in and above the active region
dc.description5 pages, 4 figures. Accepted by PASP
dc.identifierhttps://arxiv.org/abs/0708.2261
dc.identifierhttp://arxiv.org/abs/0708.2261
dc.identifiervol. 120,pp. 16-19, 2008
dc.identifierdoi:10.1086/525058
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158993
dc.subjectAstrophysics
dc.titleAssociation of mid-infrared solar plages with Calcium K line emissions and magnetic structures
dc.typetext

Files

Collections

arXiv