Upper limits to Jovian hard X radiation from the ULYSSES gamma ray burst experiment

Details Upper limits to Jovian hard X radiation from the ULYSSES gamma ray burst experiment Upper limits to Jovian hard X radiation from the ULYSSES gamma ray burst experiment

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9821217h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A12, p. 21,217-21,219

Astronomy and Astrophysics

Astronomy

5

Gamma Ray Bursts, Jupiter (Planet), Planetary Magnetospheres, Spaceborne Astronomy, X Ray Astronomy, X Rays, Ulysses Mission, X Ray Detectors

Scientific paper

We describe the first in situ search for Jovian X radiation with a dedicated X ray instrument. Upper limits to Jupiter's X ray power in the 27 - 48 keV range are presented using data taken by the gamma ray burst experiment on the experiment on the inbound Ulysses trajectory, at distances between 163 and 110 RJ. The data were analyzed using three methods for detection of (1) a steady flux, (2) a flux linked to System III rotation, and (3) a sporadic flux. The 3 sigma upper limits lie between 1.1 x 108 and 5.6 x 108 W. The results are consistent with the idea that the bulk of the Jovian UV auroral emissions are due to energetic electrons, while the previously observed low-energy X radiation is due to ion precipitation.

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