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Cluster Heating by Viscous Dissipation of Sound Waves
Mateusz Ruszkowski, Marcus Bruggen, Mitchell C. Begelman
We simulate the effects of viscous dissipation of waves that are generated by AGN activity in clusters of galaxies. We demonstrate that the amount of viscous heating associated wit…
Gamma-ray bursts from alternating-current jets
M. Sikora, M. C. Begelman, P. Coppi +1
We propose a gamma-ray burst scenario involving relativistic jets dominated by Poynting flux with alternating toroidal magnetic fields. Such a structure may arise naturally if the…
Two Dimensional Adiabatic Flows onto a Black Hole: I. Fluid Accretion
Roger D. Blandford, Mitchell C. Begelman
When gas accretes onto a black hole, at a rate either much less than or much greater than the Eddington rate, it is likely to do so in an "adiabatic" or radiatively inefficient man…
AGN Feedback Mechanisms
Mitchell C. Begelman
Accreting black holes can release enormous amounts of energy to their surroundings, in various forms. Such feedback may profoundly influence a black hole's environment. After brief…