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Astronomy Colloquium: "Cosmic Rays and Their Role in Galaxies" - Ellen Zweibel, University of Wisconsin

Event Type
Seminar/Symposium
Sponsor
Department of Astronomy
Location
Astronomy 134
Date
Apr 22, 2014   3:45 pm  
Speaker
Ellen Zweibel, University of Wisconsin
Originating Calendar
Astronomy Colloquium Speaker Calendar

Cosmic rays comprise only about a billionth of interstellar particles by number, but they carry as much energy as the thermal particles. Except for very rare direct collisions, their interaction with the interstellar medium is entirely mediated  by the galactic magnetic field. This interaction exchanges energy and momentum between the background medium and the cosmic rays, can heat the interstellar gas, and can drive a galactic wind.

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