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Events on Monday, October 12th, 2020

Plasma Physics (Physics/ECE/NE 922) Seminar
A Novel Theory of Particle Acceleration at Shocks
Time: 12:00 pm
Place: Zoom Meeting
Speaker: Damiano Caprioli, Assistant Professor University of Chicago
Abstract: Diffusive shock acceleration (DSA) is a prominent energization mechanism involved in the origin of Galactic cosmic rays and in producing the multi-wavelength emission in astrophysical systems such as novae, supernova remnants (SNRs), and galaxy clusters.
I outline how ab-initio kinetic simulations of non-relativistic shocks help unraveling the very nature of this process. In particular, I discuss the tension between the standard theory of efficient DSA and the steep spectra inferred in multi-wavelength observations of SNRs, stressing the need to go beyond the canonical prediction that strong shocks produce particles with energy spectrum ~E^-2, or harder. Finally, I introduce CRAFT (Cosmic Ray Analytical Fast Tool), a quick and versatile package for calculating spectra of accelerated particles in non-relativistic shocks, along with their radio to gamma-ray non-thermal emission.

PAUL W TERRY is inviting you to a scheduled Zoom meeting.

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Meeting ID: 991 5610 7574
Passcode: 883688


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Meeting ID: 991 5610 7574
Passcode: 883688
Host: Paul Terry
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