[IGPP Everyone] SPACE SCIENCE SEMINAR - Spring Quarter - 3:30pm -Friday April 24, 2020 - New Zoom link

[Marjorie Sowmendran]

SPACE PHYSICS SEMINAR 




USE THE CCLE ZOOM LINK PROVIDED BELOW 








https://ccle.ucla.edu/mod/zoom/view.php?id=2939559 





Date/Time: April 24, 2020/ 03:30 PM Pacific Time (US and Canada) 







SPACE PHYSICS SEMINAR 

DEPARTMENT OF EARTH, PLANETARY, AND SPACE SCIENCES 

DEPARTMENT OF ATMOSPHERIC AND OCEANIC SCIENCES 

UNIVERSITY OF CALIFORNIA, LOS ANGELES 

(AOS M275B, EPSS M288B) 

Magnetic Curvature Analysis on Reconnection Related Structures at Earth’s Magnetopause 






Yi Qi 




Department of Earth, Planetary, and Space Sciences, UCLA 







Abstract: Magnetic reconnection is a mechanism that allows rapid and explosive energy transfer from the magnetic field to the plasma. The magnetopause is the interface between the shocked solar wind plasma and Earth’s magnetosphere. Reconnection enables the transport of momentum from the solar wind into Earth’s magnetosphere. Because of its importance in this regard, magnetic reconnection has been extensively studied in the past and is the primary goal of the ongoing Magnetospheric Multiscale (MMS) mission. During magnetic reconnection, the originally anti-parallel fields annihilate and reconnect in a thinned current sheet. In the vicinity of a reconnection site, a prominently increased curvature of the magnetic field (and smaller radius of curvature) marks the region where the particles start to deviate from their regular gyro-motion and become available for energy conversion. Before MMS, there were no closely separated multi-spacecraft missions capable of resolving these micro-scale curvature features, nor examining particle dynamics with sufficiently fast cadence. In this study, we use measurements from the four MMS spacecraft to determine the curvature of the field lines and the plasma properties near the reconnection site. We use this method to study FTEs (flux ropes) on the magnetopause, and the interaction between co-existing FTEs. . 




Friday April 24, 2020 




In-charge: C. T. Russell 






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