 |
| Titel |
On the cessation of magnetic reconnection |
| VerfasserIn |
M. Hesse, J. Birn |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 22, no. 2 ; Nr. 22, no. 2 (2004-01-01), S.603-612 |
| Datensatznummer |
250014785
|
| Publikation (Nr.) |
 copernicus.org/angeo-22-603-2004.pdf |
|
|
|
|
|
| Zusammenfassung |
Kinetic simulations of collisionless magnetic reconnection are used to study the effect on
the reconnection rate of ion density enhancements in the inflow region. The goal of the
investigation is to study a candidate mechanism for the slow-down of magnetic
reconnection. The calculations involve either proton or oxygen additions in the inflow
region, initially located at two distances from the current sheet. Protons are found to be
much more tightly coupled into the evolution of the reconnecting system and, therefore,
they effect an immediate slowdown of the reconnection process, as soon as the flux tubes they
reside on become involved. Oxygen, on the other hand, has, within the limits of the
calculations, a much less pronounced effect on the reconnection electric field. The
difference is attributed to the lack of tight coupling to the magnetic field of the oxygen
populations. Last, a study of proton and oxygen acceleration finds that protons respond
primarily to the reconnection electric field, whereas the main oxygen electric field
is achieved by Hall-type electric fields at the plasma sheet boundary.
Key words. Space plasma physics (magnetic reconnection;
numerical simulation studies; numerical simulation studies) |
| |
|
| Teil von |
|
|
|
|
|
|
|
|