Hot and Cool Loops Composing the Corona of the Quiet Sun

[摘要] WeperformedarasterscanobservationofthequietSunwiththeEUVImagingSpectrometer(EIS)aboardHinodeandsimultaneouslyanalyzedobservedemissionlinesofFeVIIItoXV.Fromacombinedanalysis,radiancemapsfromtheobservedemissionlinesweredeconvolvedintoplasmacomponentsatfiverepresentativetemperaturesbetween0.40 MKand2.63 MK.Whilethelowesttemperaturecomponentshowsnetworkstructuresonspatialscalesofbetween10$${}^{primeprime}$$and20$${}^{primeprime}$$,thehighertemperaturecomponentsshowthread-likepatternsonlargerscales.Acomparisonofemissionmeasuresatthedifferenttemperaturessuggeststhatthelowesttemperaturecomponentismainlycomposedofbodiesofsmallloops,ratherthanacollectionoffootpointsofthehighertemperatureloops.Thedifferenceinmorphologiesisinterpretedasbeingduetodifferentmagneticfieldconfigurations,loopswithinsuper-granulecellsandfieldsextendingbeyondtheboundariesofsuper-granulecells,withdistinctpeaktemperaturesfollowingaloopscalinglaw.

[学科分类] 天文学(综合)

[关键词] "Sun: corona";"Sun: transition region"