Discovery of Jovian dust streams and interstellar grains by the Ulysses spacecraft (original) (raw)
NASA/ADS
;
- Zook, H. A. ;
- Baguhl, M. ;
- Balogh, A. ;
- Bame, S. J. ;
- Fechtig, H. ;
- Forsyth, R. ;
- Hanner, M. S. ;
- Horanyi, M. ;
- Kissel, J. ;
- Lindblad, B. -A. ;
- Linkert, D. ;
- Linkert, G. ;
- Mann, I. ;
- McDonnell, J. A. M. ;
- Morfill, G. E. ;
- Phillips, J. L. ;
- Polanskey, C. ;
- Schwehm, G. ;
- Siddique, N. ;
- Staubach, P. ;
- Svestka, J. ;
- Taylor, A.
Abstract
ON 8 February 1992, the Ulysses spacecraft flew by Jupiter at a distance of 5.4 AU from the Sun. During the encounter, the spacecraft was deflected into a new orbit, inclined at about 80° to the ecliptic plane, which will ultimately lead Ulysses over the polar regions of the Sun1. Within 1 AU from Jupiter, the onboard dust detector2 recorded periodic bursts of submicrometre dust particles, with durations ranging from several hours to two days, and occurring at approximately monthly intervals (28 +/- 3 days). These particles arrived at Ulysses in collimated streams radiating from close to the line-of-sight direction to Jupiter, suggesting a jovian origin for the periodic bursts. Ulysses also detected a flux of micrometre-sized dust particles moving in high-velocity (>= =26 km s-1) retrograde orbits (opposite to the motion of the planets); we identify these grains as being of interstellar origin.
Publication:
Nature
Pub Date:
April 1993
DOI:
Bibcode:
Keywords:
- Cosmic Dust;
- Interstellar Matter;
- Jupiter (Planet);
- Planetary Composition;
- Spacecraft Orbits;
- Ulysses Mission;
- Interplanetary Dust;
- Particle Size Distribution;
- Astrophysics; Jupiter;
- JUPITER;
- DUST;
- SPACECRAFT OBSERVATIONS;
- ULYSSES MISSION;
- PARTICLES;
- PERIODICITY;
- ORIGIN;
- SOURCE;
- FLUX;
- SIZE;
- VELOCITY;
- ORBITS;
- EJECTA;
- RETROGRADE MOTION;
- INTERSTELLAR MATERIAL;
- MAGNETIC FIELD;
- COMPARISONS;
- CHARGED PARTICLES;
- MOTION;
- ELECTROMAGNETIC EFFECTS;
- ORBITAL ELEMENTS;
- SOLAR WIND;
- MAGNETOSPHERE