Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Colloquia Archive 
 Postdoc Seminars Archive 
 Quantum Lunch 
 Quantum Lunch Archive 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 P/T Colloquia 
 Kac Lectures 
 Kac Fellows 
 Dist. Quant. Lecture 
 Ulam Scholar 
 CNLS Fellowship Application 
 Student Program 
 Past Visitors 
 History of CNLS 
 Maps, Directions 
 CNLS Office 
Monday, May 04, 2015
3:00 PM - 4:00 PM
CNLS Conference Room (TA-3, Bldg 1690)


The Microphysics and Macrophysics of Cosmic Rays

Ellen Zweibel
University of Wisconsin, Madison

Cosmic rays, which are primarily relativistic protons, comprise only about a billionth of interstellar particles by number, but have about as much energy as the thermal gas. In galaxies like our own, they are coupled to the background electromagnetically, by the interstellar magnetic field. According to the classical theory of cosmic ray confinement, this coupling occurs through plasma instabilities generated by the cosmic rays themselves, and can be described by a fluid theory. I will describe the basis for self confinement and some recent challenges to the theory.

Host: Hui Li