SUMER: Temperatures, densities, and velocities in the outer solar atmosphereThe SUMER (Solar Ultraviolet Measurement of Emitted Radiation) instrumentation that will be mounted on the SOHO (Solar and Heliospheric Observatory) spacecraft is in development. It has some capability of improving the solar angular resolution and the spectral resolution already obtained in the far UV to the extreme UV, corresponding to the temperature range between 10,000 and a few 1,000,000 K. Some insights into the SUMER spectrometer, developed to study the dynamics and to infer temperatures and densities of the low corona and the chromosphere-corona transition zone in using the 50 to 160 nm wavelength range, are given. The SUMER scientific goals and the techniques used are outlined. The instrumentation and the expected performances are described. The way the observations can be conducted is emphasized and the operation of SUMER in coordination with other SOHO instrumentations and in cooperation with ground based observations is explained.
Document ID
19930022157
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lemaire, Philippe (Paris XI Univ. Orsay, France)
Wilhelm, K. (Max-Planck-Inst. fuer Aeronomie Katlenburg-Lindau, Germany)
Axford, W. I. (Max-Planck-Inst. fuer Aeronomie Katlenburg-Lindau, Germany)
Curdt, W. (Max-Planck-Inst. fuer Aeronomie Katlenburg-Lindau, Germany)
Gabriel, A. H. (Paris XI Univ. Orsay, France)
Grewing, M. (Tuebingen Univ. Germany)
Huber, M. C. E. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Jordan, Stuart D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kuehne, M. (Physikalisch-Technische Bundesanstalt Berlin, Germany)