Global Heliosphere Imaging in EUV

Details Global Heliosphere Imaging in EUV Global Heliosphere Imaging in EUV

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm43a1470g&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM43A-1470

Physics

2124 Heliopause And Solar Wind Termination, 2126 Heliosphere/Interstellar Medium Interactions, 2164 Solar Wind Plasma

Scientific paper

Global imaging of the heliosphere with ultra-high spectral resolution at 30.4 nm would open a new window on important physical processes in the heliosphere and at its galactic frontier. The radiation reaching an observer includes glow of the interstellar plasma beyond the heliopause, glow of pickup ions in the solar wind, characteristic emissions produced by charge exchange of solar wind alpha-particles on interplanetary atomic hydrogen, and emissions of hot plasmas in the Local Bubble. Global maps will reveal asymmetry of the heliopause and allow monitoring of the three-dimensional flow pattern of the solar wind, including in the regions over the sun's poles. Recent feasibility studies have shown a promising way of meeting challenges of developing the enabling instrumentation. Lunar space would provide an ideal platform for global imaging of the heliosphere, minimizing the interference of the magnetosphere and geocorona and simplifying operations and thermal and attitude control of spacecraft. The Earth-Moon libration points have been considered, but lunar surface observatory offers unique advantages for performing 30.4-nm imaging. The Return to the Moon Program will enable remote exploration of the solar system galactic frontier in EUV and visualize the evolution of the solar wind global flow pattern during the solar cycle.

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