Ulysses, from its vantage point high over the sun's southern polar region, has a direct line of sight to the impact areas. The URAP instrument covers the frequency range of 1 kHz to 1 MHz with very high sensitivity. This frequency range encompasses several of Jupiter's known radio components and these components are quite regularly and easily detected by URAP.
We have now processed URAP data through the Q impacts and have NOT detected any clearly identifiable radio emission associated with the impacts. Both Jupiter and the sun are very active, but not out of the ordinary. We will continue to analyze our data in search of more subtle or long-term effects due to the impacts, but at this stage we are not hopeful that anything will be revealed.
M. L. Kaiser, R. J. MacDowall, M. D. Desch, W. M. Farrell, R. G. Stone
Goddard Space Flight Center, Greenbelt, MD 20771