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Long-term variations in the gamma-ray background on SMMLong-term temporal variations in the various components of the background radiation detected by the gamma-ray spectrometer on the Solar Maximum Mission are presented. The SMM gamma-ray spectrometer was launched in February, 1980 and continues to operate normally. The extended period of mission operations has provided a large data base in which it is possible to investigate a variety of environmental and instrumental background effects. In particular, several effects associated with orbital precession are introduced and discussed.
Document ID
19900038267
Document Type
Conference Proceedings
Authors
Kurfess, J. D. (Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Share, G. H. (Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Kinzer, R. L. (Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Johnson, W. N. (Hulburt (E. O.) Center for Space Research Washington, DC, United States)
Adams, J. H., Jr. (U.S. Navy, E. O. Hulburt Center for Space Research, Washington DC, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
SPACE RADIATION
Funding Number(s)
CONTRACT_GRANT: NASA ORDER S-14513-D
CONTRACT_GRANT: NAG5-720
CONTRACT_GRANT: BMFT-01-OK-017-ZA/WS/WRK-0275
Distribution Limits
Public
Copyright
Other