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          Institute: MPI für Astrophysik     Collection: Stellar Astrophysics     Display Documents



ID: 550591.0, MPI für Astrophysik / Stellar Astrophysics
Large-scale disturbance of the solar wind by a comet
Authors:Wegmann, R.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Astronomy & Astrophysics
Journal Abbrev.:Astron. Astrophys.
Volume:389
Issue / Number:3
Start Page:1039
End Page:1046
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Model calculations for the interaction of the solar wind with a comet are presented that extend 30 million km into the tail. It is shown that the disturbance of the interplanetary magnetic field (IMF) (the draping) is limited to timescales of 10 to 50 hours and length scales of 10 to 50 million km. This is supported by a theoretical argument about the acceleration of the cometary ions. The distribution of ions and protons at the end of the model tails agrees with measurements made by Ulysses far in the tail of comet Hyakutake. It is shown that the ion tail is concentrated in the current sheet between two flux lobes as long as the draping persists. The far tail, however, is at and concentrated in a plane parallel to the IMF.
Free Keywords:comets : general; Sun : solar wind
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astrophysik
External Affiliations:Max Planck Inst Astrophys, Karl Schwarzschild Str 1, D-85748; Garching, Germany; Max Planck Inst Astrophys, D-85748 Garching, Germany
Identifiers:ISI:000176877800031
ISSN:0004-6361
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