Giotto ion mass spectrometer measurements at comet P/Grigg-Skjellerup

Details Giotto ion mass spectrometer measurements at comet P/Grigg-Skjellerup Giotto ion mass spectrometer measurements at comet P/Grigg-Skjellerup

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jgr....9919255g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 99, no. A10, p. 19,255-19,265

Other

2

Giotto Mission, Grigg-Skjellerup Comet, Ions, Mass Spectrometers, Bow Waves, Correlation, Ion Scattering, Ionic Diffusion, Magnetic Fields, Pitch (Inclination), Protons

Scientific paper

The Giotto ion mass spectrometer high-intensity spectrometer (IMS-HIS) measured fluxes of ions from about 260,000 km before (1008:37 UT spacecraft time) to about 86,000 km after (1701:33 UT spacecraft time) closest approach to comet P/Grigg-Skjellerup during the encounter on July 10, 1992. Although the HIS sensor was not designed to measure protons, these ions were measured far from the comet. Close in to the comet, the ions observed were probably also protons, although heavier ions cannot be completely ruled out. Considerable temporal structure appears in the data, well-correlated with the data of other instruments onboard, especially those of the magnetometer. In particular, the ion count rate correlates with the direction of the magnetic field. This strong modulation at the water group ion cyclotron period (approx. 90 s) inside the inbound bow wave indicates a very narrow ion pitch angle distribution. Hence at Grigg-Skjellerup the ions appear to experience very little pitch angle scattering. This may result from strong compression in the rapidly increasing magnetic field.

Affiliated with

Also associated with

No associations

Rating

Giotto ion mass spectrometer measurements at comet P/Grigg-Skjellerup does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Giotto ion mass spectrometer measurements at comet P/Grigg-Skjellerup, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Giotto ion mass spectrometer measurements at comet P/Grigg-Skjellerup will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1071805