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Physics Colloquium: "The Accelerating Universe"

SpeakerProfessor Roger Blandford, Physics Department, Standford University
Date Oct 16, 2013
Time 4:00 pm  
Location 141 Loomis
Sponsor Physics Department
Contact Marjorie Gamel
Phone 217-333-3762
Event type Seminar/Symposium
Views 5263
Originating Calendar Physics - Colloquium

From keV electrons in terrestrial aurorae to Ultra High Energy Cosmic Rays in unidentified "Zevatrons",  the cosmos has a strongly plutocratic tendency to concentrate energy in a tiny minority of suprathermal particles. The mechanisms involved can be traced back to the ideas of Faraday,  Alfvén and Fermi and, although the details are idiosyncratic to the many sites that we have observed and studied, much can be learned from comparing and contrasting particle acceleration in these locations as well as computationally and experimentally. It will be argued that new mechanisms are required to account for recent observations of galactic nuclei, pulsar wind nebulae and gamma ray bursts and some possibilities will be discussed.

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