[IGPP Everyone] TODAY: Space Physics Seminar, Fri. 3/15, 3:30pm: "What's up (and down) in the Earth's Van Allen radiation belts?" (S. Claudepierre, UCLA AOS & Aerospace Corp.)

[Emmanuel V. Masongsong]

SPACE PHYSICS SEMINAR 
DEPARTMENT OF EARTH, PLANETARY, AND SPACE SCIENCES 
DEPARTMENT OF ATMOSPHERIC AND OCEANIC SCIENCES 
UNIVERSITY OF CALIFORNIA, LOS ANGELES 
(AOS M275C, EPSS M288C) 

What's up (and down) in the Earth's Van Allen radiation belts? 

Seth Claudepierre 
UCLA AOS and The Aerospace Corporation 

The high-energy tail of the plasma in near-Earth space is trapped by the geomagnetic field, forming the Van Allen radiation belts that encircle the Earth. Various physical processes can rapidly accelerate these charged particles to prodigious energies, in excess of one megaelectron volt, on timescales of one day or less. Owing to the hazard that this radiation poses to manmade technologies in space, there is considerable interest in understanding the processes that govern the particle dynamics. To that end, NASA launched the twin Van Allen Probes in 2012 to improve radiation belt predictability, and radiation belt science has evolved significantly over that time. With the mission soon coming to an end, it is time to survey the landscape to take stock of where we have been, and where we are going. We will thus present an overview of recent advances in radiation belt science, highlighting current research trends and several unresolved issues. In particular, we will examine the various theories for particle acceleration and loss, with an emphasis on what has been revealed in the Van Allen Probes observations. 

Friday, March 15 , 2019 
Room 6704 Geology 
3:30 - 5:00 PM 

In Charge: 
V. Angelopoulos 

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