Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...300..453g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 300, Jan. 1, 1986, p. 453-455. NASA-supported research.
Astronomy and Astrophysics
Astronomy
10
Auroral Arcs, Heao 2, Planetary Radiation, Saturn (Planet), Saturn Atmosphere, X Ray Sources, Bremsstrahlung, Energy Transfer, Pioneer 11 Space Probe, Planetary Magnetospheres, Ultraviolet Astronomy, X Ray Spectra, Saturn, X-Rays, Emissions, Magnetosphere, Pioneer 11, Ultraviolet, Wavelengths, Voyager Missions, Spacecraft Observations, Source
Scientific paper
X-rays are produced in auroral discharges, and their measurement can serve to characterize the interaction processes responsible for the aurora itself. The existence of auroral activity on Saturn was suggested by the observation of a magnetosphere by Pioneer 11 and confirmed by UV measurements during the Voyager encounters. The detection of X-rays from Jupiter with the Einstein Observatory (HEAO 2) satellite provided the impetus for a subsequent observation of Saturn. No emission was detected. This article presents the upper limit established by the observation and derives an expected emission level assuming X-ray production to be the result of bremsstrahlung from keV electrons precipitating into Saturn's atmosphere. The difference is a factor of 100.
Gilman D. A.
Hurley Kevin Christopher
Metzger Albert E.
Schnopper Herbert W.
Seward Frederick D.
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