Physics
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993esasp1157..105h&link_type=abstract
In ESA, Scientific Requirements for Future Solar-Physics Space Missions p 105-113 (SEE N94-22837 06-92)
Physics
Astronomical Satellites, Japanese Space Program, Japanese Spacecraft, Requirements, Satellite-Borne Instruments, Solar Corona, Solar Flares, Solar Physics, Space Missions, Spaceborne Telescopes, Chromosphere, Extreme Ultraviolet Radiation, Helioseismology, International Cooperation, Sunspots, Velocity Measurement, X Ray Telescopes
Scientific paper
Findings of the Yohkoh satellite about solar corona dynamics are described. Another mission planned by the Japanese solar team for around the year 2000 is addressed. The major objective of the next mission is to find the causes of the coronal dynamics discovered by Yohkoh, and to search for the mechanisms of the coronal and chromospheric heating by simultaneously observing the motions of photospheric magnetic flux tubes and the resultant heating and dynamics of the chromosphere and corona. For this purpose, it is proposed that the core instruments should consist of an optical telescope of less than or equal to 80 cm aperture and 0.1 to 0.2 arcsec resolution, and soft X-ray telescope(s) with resolution better than 1 arcsec. The former should have a magnetograph/Dopplergraph and H alpha plus CaK imagers. Once combined, it will be possible also to study the driving mechanisms of various phenomena such as spicules, fibrils and newly discovered x-ray jets, and prominences, sunspots, and needless to say flares. The objectives and necessary methods of observation are discussed. Only a very rough idea of the instrumentation is given, including some discussion of EUV and other instruments. The mission is expected to be conducted by an international team.
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