Modeling the UV/EUV Spectrum with SRPM

Details Modeling the UV/EUV Spectrum with SRPM Modeling the UV/EUV Spectrum with SRPM

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008espm...12.3.12h&link_type=abstract

"12th European Solar Physics Meeting, Freiburg, Germany, held September, 8-12, 2008. Online at http://espm.kis.uni-freiburg.de/,

Physics

Scientific paper

We present a new set of semi-empirical solar atmosphere structures for different features on the solar disk that is consistent with the latest inter- network model by Fontenla et al. (2007), which reproduces the CO lines in the IR as well as the UV and radio continua. The intensity distribution of SUMER observations is used to define a set of solar disk features that accounts for the observed range of upper chromospheric heating. Using these models the UV/EUV (as well as longer wavelengths) radiance spectra are computed with SRPM in full-NLTE using the latest available atomic data and considering 24 elements up to high ionization stages with a total of approximately 14000 atomic levels and approximately 170000 line transitions. The radiance spectra of the new atmosphere structures allow us to study in detail the varying contributions of these features to the solar spectral irradiance. The synthetic spectra are compared with SUMER data and EUV irradiance observations obtained with the EVE rocket-instrument during a recent rocket flight.

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