Wavelength Determination for Solar Features Observed by the EUV Imaging Spectrometer on Hinode

[摘要] AwavelengthcalibrationofsolarlinesobservedbythehighresolutionEUVImagingSpectrometer(EIS)ontheHinodesatelliteisreported.Spectralfeaturesofthequietsunandoftwomildlyactiveareasweremeasuredandcalibrated.Alistingofthestrongerobservedlineswithidentificationoftheleadingcontributorionsispresented.41linesarereported,with90%identified.Wavelengthprecisions(2$$sigma$$)of$$pm$$0.0031 ÅfortheEISshortbandand$$pm$$0.0029 ÅfortheEISlongbandareobtained.Theselines,typicalof1–$$2imes10^{6}$$Kplasmas,arerecommendedasstandardsfortheestablishmentofEISwavelengthscales.ThetemperatureofEISvariesbyabout$$1lap{.}^{circ}5$$Caroundtheorbitandalsowithspacecraftpointing.Thecorrelationofthesetemperaturechangeswithwavelengthversuspixelnumberscalechangesisreported.

[学科分类] 天文学(综合)

[关键词] Sun;"Sun: UV radiation"