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The Lunar X-ray Observatory (LXO)X-ray emission from charge exchange recombination between the highly ionized solar wind and neutral material i n Earth's magnetosheath has complicated x-ray observations of celestial objects with x-ray observatories including ROSAT, Chandra, XMM-Newton, and Suzaku. However, the charge-exchange emission can also be used as an important diagnostic of the solar-wind interacting with the magnetosheath. Soft x-ray observations from low-earth orbit or even the highly eccentric orbits of Chandra and XMM-Newton are likely superpositions of the celestial object of interest, the true extra-solar soft x-ray background, geospheric charge exchange, and heliospheric charge exchange. We show that with a small x-ray telescope placed either on the moon, in a similar vein as the Apollo ALSOP instruments, or at a stable orbit near L1, we can begin t o disentangle the complicated emission structure in the soft x-ray band. Here we present initial results of a feasibility study recently funded by NASA t o place a small x-ray telescope on the lunar surface. The telescope operates during lunar night to observe charge exchange interactions between the solar wind and magnetospheric neutrals, between the solar wind and the lunar atmosphere, and an unobstructed view of the soft x-ray background without the geospheric component.
Document ID
20080032781
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Porter, F. Scott
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
June 23, 2008
Subject Category
Astronomy
Meeting Information
Meeting: Society of Photo-optical Instrumentation Engineers Conference
Location: Marseilles
Country: France
Start Date: June 23, 2008
End Date: June 27, 2008
Funding Number(s)
WBS: WBS 811073.02.14.01.50
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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