SUMER: Solar Ultraviolet Measurements of Emitted Radiation

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Emission Spectra, Extreme Ultraviolet Radiation, Line Spectra, Solar Corona, Solar Wind, Chromosphere, Doppler Effect, Magnetohydrodynamic Flow, Plasma Density, Plasma Temperature, Solar Magnetic Field, Solar Spectrometers, Stigmatism, Ultraviolet Spectrometers

Scientific paper

The experiment Solar Ultraviolet Measurements of Emitted Radiation (SUMER) is designed for the investigations of plasma flow characteristics, turbulence and wave motions, plasma densities and temperatures, structures and events associated with solar magnetic activity in the chromosphere, the transition zone and the corona. Specifically, SUMER will measure profiles and intensities of Extreme Ultraviolet (EUV) lines emitted in the solar atmosphere ranging from the upper chromosphere to the lower corona; determine line broadenings, spectral positions and Doppler shifts with high accuracy, provide stigmatic images of selected areas of the Sun in the EUV with high spatial, temporal and spectral resolution and obtain full images of the Sun and the inner corona in selectable EUV lines, corresponding to a temperature from 10,000 to more than 1,800,000 K.

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