[IGPP Everyone] Happening at 3:30 pm - Friday - SPACE SCIENCE SEMINAR - Spring Quarter - 3:30pm -Friday May 29, 2020 - CCLE Zoom
Marjorie Sowmendran
margie at igpp.ucla.edu
Fri May 29 15:03:37 PDT 2020
Reminder
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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