Conveners
Wednesday afternoon
- Paul Nulsen (Harvard-Smithsonian Center for Astrophysics)
Prof.
Ellen Zweibel
(U Wisconsin-Madison)
8/13/14, 2:00 PM
Program
Acoustic waves excited by AGN have long been considered an important channel for heating the intracluster medium. Although heating by nearly adiabatic plane waves is quite simple to calculate, heating by spherical waves in a highly dissipative medium is less simple. I'll describe joint work with Vladimir Mirnov (UW-Madison) in which we calculate the driving and damping of acoustic and...
Prof.
Marcus Bruggen
(University of Hamburg)
8/13/14, 2:25 PM
Program
The intracluster medium is an extreme plasma that cannot be studied in terrestrial laboratories. Its thermal state is largely set by shocks that occur during virialisation and cluster mergers. Shocks are also a site for particle acceleration. Observations in the X-ray and radio band are beginning to tell us more about the physics of these shocks - however, the results from recent observations...
Samuel Skillman
(Stanford, SLAC)
8/13/14, 2:50 PM
Program
We present cosmological simulations of galaxy clusters following the distribution of cosmic rays as they are injected, accelerated, and transported. Implications for X-ray, radio, and Sunyaev-Zel'dovich effect observations are discussed, in particular in the context of constraining ICM plasma properties near shock fronts.
Dr
Damiano Caprioli
(Princeton University)
8/13/14, 4:00 PM
Program
Hybrid particle in cell simulations (kinetic protons and fluid electrons) are providing us with unprecedented insights into the microphysics of collisionless shocks, also attesting to their ability to accelerate particles and to generate magnetic fields. I present state-of-the-art 2D and 3D simulations of non-relativistic shocks, discussing under which conditions (shock strength and...
