2381/38263
C. M. Jackman
C. M.
Jackman
G. Provan
G.
Provan
Stanley William Herbert Cowley
Stanley William Herbert
Cowley
Reconnection events in Saturn's magnetotail: Dependence of plasmoid occurrence on planetary period oscillation phase
University of Leicester
2016
Science & Technology
Physical Sciences
Astronomy & Astrophysics
TRAVELING COMPRESSION REGIONS
FIELD-ALIGNED CURRENTS
MAGNETIC-FIELD
MAGNETOSPHERE
TAIL
2016-10-27 09:21:48
Journal contribution
https://figshare.le.ac.uk/articles/journal_contribution/Reconnection_events_in_Saturn_s_magnetotail_Dependence_of_plasmoid_occurrence_on_planetary_period_oscillation_phase/10122593
During its exploration of Saturn's magnetotail the Cassini magnetometer has detected many in situ examples of magnetic reconnection, in the form of plasmoids, traveling compression regions (TCRs), and dipolarizations. Meanwhile, many magnetospheric phenomena have been shown to be organized with particular regularity by planetary period oscillation systems driven separately from the Northern and Southern Hemispheres of the planet. Here we examine the relationship between the occurrence of plasmoids and TCRs and the magnetic phases of the northern and southern systems. We find a striking degree of organization of the events by both northern and southern phases, with events linked preferentially to intervals in which the magnetospheric plasma and field lines are displaced outward from the planet and the current sheet thinned, both effects being likely to favor the occurrence of reconnection and plasmoid-related mass loss. Little evidence is found for significant visibility effects associated with north-south motions of the plasma sheet.