AbstractThe prospect of a future manned lunar base presents an interesting challenge for helioseismology-a field in which observations have been obtained from the Earth's surface, from near-earth satellites, and from interplanetary space-craft. Similar observations from the Moon would possess several advantages over those from other sites. Advantages over the Earth would include the absence of the terrestial atmosphere and the lower lunar surface gravity, both of which would allow for larger-aperture telescopes with which the highest-degree solar oscillations could be studied. Compared with the .99 AU halo orbit of the upcoming SOHO mission a lunar base would have less-restrictive weight, power, and telemetry restrictions. An instrument there could also be repaired in-place and could be operated for at least one solar cycle. Disadvantages compared to SOHO would include interruptions from the lunar night and during lunar eclipses. Temporal sidelobes of frequency spacing comparable to that due to solar surface rotation would be introduced unless a network of lunar stations were operated. Finally, solar Doppler measurements made from the Moon would have to allow for the orbital velocity of the Moon around the Earth, but this should not pose a problem for such measurements.
Helioseismology on the Moon
Advances in Space Research ; 14 , 6 ; 21-31
01.01.1994
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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