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Solar EUV Spectrum Calculated for Quiet Sun Conditions

By Margit Haberreiter

Abstract

We present spectral synthesis calculations of the solar extreme UV (EUV) in spherical symmetry carried out with the 'Solar Modeling in 3D' code. The calculations are based on one-dimensional atmospheric structures that represent a temporal and spatial mean of the chromosphere, transition region, and corona. The synthetic irradiance spectra are compared with the recent calibration spectrum taken with the EUV Variability Experiment during the Whole Heliospheric Interval. The good agreement between the synthetic and observed quiet Sun spectrum shows that the employed atmospheric structures are suitable for irradiance calculations. The validation of the quiet Sun spectrum for the present solar minimum is the first step towards the modeling of the EUV variations.Comment: 7 pages, 2 figures, accepted for publication in Solar Physic

Topics: Astrophysics - Solar and Stellar Astrophysics
Year: 2011
DOI identifier: 10.1007/s11207-011-9767-9
OAI identifier: oai:arXiv.org:1103.4933
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