Cometary Ions Trapped in a Coronal Mass Ejection

Details Cometary Ions Trapped in a Coronal Mass Ejection Cometary Ions Trapped in a Coronal Mass Ejection

Apr 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apj...604l.121g&link_type=abstract

The Astrophysical Journal, Volume 604, Issue 2, pp. L121-L124.

Astronomy and Astrophysics

Astronomy

11

Comets: General, Interplanetary Medium

Scientific paper

Ion tails of comets are known to extend radially away from the Sun over very large distances. Crossing these tails by spacecraft not specifically targeted to intercept them was believed to be extremely improbable, since that requires precise angular alignment of the spacecraft with a comet. We report here the fortuitous detection of cometary ions at large angular separation far from the comet. To explain this unexpected discovery, we conclude that these ions were ducted laterally along magnetic fields that were randomly distorted by a coronal mass ejection and that such transport increases the probability of an unplanned detection of comets.

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