Search Publications
Collision of comet Shoemaker-Levy 9 with Jupiter: impact study of two fragments from the timing of precursor events.
Sekanina, Z.
The impacts of fragments K and R of comet Shoemaker-Levy 9 are examined with the aims to interpret the timing of the observed precursors to the main thermal emission event and to correlate the results of ground-based infrared observations with a variety of observations made onboard the Galileo spacecraft. Analysis of the phenomena associated with …
Kilometre-wave radio observations of solar type III bursts by ULYSSES compared with decametre-wave observations from the Earth.
MacDowall, R. J.; Lecacheux, A.; Hoang, S. +1 more
Observations of solar type III bursts, made at kilometric frequencies by the radio receiver of the Ulysses Unified Radio and Plasma Wave (URAP) investigation, are compared with simultaneous observations, made at decametric frequencies at the Nancay Radio Astronomy Station of the Paris-Meudon Observatory, during the period following the spacecraft …
Relative astrometry with Hipparcos: double stars with orbital motion.
Badiali, M.; Cardini, D.; Emanuele, A. +2 more
During the Hipparcos data analysis an algorithm was developed to study orbital motion in double stars and to derive the seven Dommanget parameters in the positive cases. Three approaches were followed: linear motion model, quadratic motion model and orbital model. In the last model the algorithm needs sufficiently good starting values and it has b…
A search for 3He enhancements in SEP and CIR-associated events with Ulysses/HI-scale.
Biesecker, D. A.
We identify 17 solar energetic particle (SEP) events with enhanced abundances of 3He relative to 4He detected by the Heliosphere Instrument for Spectra, Composition, and Anisotropy at Low Energies (HI-SCALE) on the Ulysses spacecraft. These events were all detected while Ulysses was within 5deg of the ecliptic plane, but at d…