[IGPP Everyone] SPACE SCIENCE SEMINAR - Spring Quarter - 3:30pm -Friday May 29, 2020 - CCLE Zoom

[Marjorie Sowmendran]

SPACE PHYSICS SEMINAR 




USE THE CCLE ZOOM LINK PROVIDED BELOW 








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





Date/Time: May 29, 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) 




New Insights into the Structure of Flux Transfer Events 
Una Schneck 


Department of Earth, Planetary, and Space Sciences, UCLA 


Abstract: In 1977 the ISEE-1 and ISEE-2 space probes were launched to study the Earth's magnetospheric environment. Near the magnetopause boundary,but in the magnetosheath, they discovered multiple magnetic flux tubes containing hot electrons. The presence of energetic electrons suggested that these flux tubes were transferring magnetic flux from the magnetosphere to the magnetotail and were dubbed Flux Transfer Events (FTEs). Recent MMS studies have revealed that half of all observed FTEs do not contain magnetospheric energetic electrons and hence are actually not connected to the magnetosphere. In this talk I will explore how the mechanism generating FTEs produces the absence of energetic electrons in precisely half of the flux tubes and discuss a new model of FTE production based on magnetic entanglement. In this model the reconnection process simplifies the complex magnetic configuration produced by simultaneous reconnection at multiple sites on the dayside magnetopause. 











Friday May 29, 2020 




In-charge: C. T. Russell 






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