 |
| Titel |
Magnetic field structure of large-scale plasmoid generated by the fast reconnection mechanism in a sheared current sheet |
| VerfasserIn |
M. Ugai |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 28, no. 8 ; Nr. 28, no. 8 (2010-08-11), S.1511-1521 |
| Datensatznummer |
250016866
|
| Publikation (Nr.) |
 copernicus.org/angeo-28-1511-2010.pdf |
|
|
|
|
|
| Zusammenfassung |
| On the basis of the spontaneous fast reconnection
model, three-dimensional magnetic field profiles
associated with a large-scale plasmoid propagating along the
antiparallel magnetic fields are studied in the
general sheared current sheet system. The plasmoid is generated
ahead of the fast reconnection jet as a
result of distinct compression of the magnetized plasma. Inside
the plasmoid, the sheared (east-west) field component has the
peak value at the plasmoid center located at x=XC, where the
north-south field component changes its sign. The plasmoid center
corresponds to the so-called contact discontinuity that bounds the
reconnected field lines in x<XC and the field lines without
reconnection in x>XC. Hence, contray
to the conventional prediction,
the reconnected sheared field lines in x<XC are not spiral
or helical, since they cannot be topologically connected
to the field lines in x>XC. It is demonstrated that the
resulting profiles of magnetic field components inside the
plasmoid are, in principle, consistent with
satellite observations. In the ambient magnetic field region
outside the plasmoid too, the magnetic field profiles are
in good agreement with the well-known observations of
traveling compression regions (TCRs). |
| |
|
| Teil von |
|
|
|
|
|
|
|
|