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http://hdl.handle.net/20.500.12386/30551
Titolo: | The effect of diamagnetic drift on motion of the dayside magnetopause reconnection line | Autori: | Trenchi, L. MARCUCCI, Maria Federica Fear, R. C. |
Data pubblicazione: | 2015 | Rivista: | GEOPHYSICAL RESEARCH LETTERS | Numero: | 42 | Fascicolo: | 15 | Da pagina:: | 6129 | Abstract: | Magnetic reconnection at the magnetopause occurs with a large density asymmetry and for a large range of magnetic shears. In these conditions, a motion of the X line has been predicted in the direction of the electron diamagnetic drift. When this motion is super Alfvenic, reconnection should be suppressed. We analysed a large data set of Double Star TC-1 dayside magnetopause crossings, which includes reconnection and nonreconnection events. Moreover, it also includes several events during which TC-1 is near the X line. With these close events, we verified the diamagnetic suppression condition with local observations near the X line. Moreover, with the same close events, we also studied the motion of the X line along the magnetopause. It is found that, when reconnection is not suppressed, the X line moves northward or southward according to the orientation of the guide field, which is related to the interplanetary magnetic field B<SUB>Y</SUB> component, in agreement with the diamagnetic drift. | URI: | http://hdl.handle.net/20.500.12386/30551 | URL: | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2015GL065213 | ISSN: | 0094-8276 | DOI: | 10.1002/2015GL065213 | Bibcode ADS: | 2015GeoRL..42.6129T | Fulltext: | open |
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