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Astrophysical Gyrokinetics: Basic Equations and Linear Theory
Gregory G. Howes, Steven C. Cowley, William Dorland +3
Magnetohydrodynamic (MHD) turbulence is encountered in a wide variety of astrophysical plasmas, including accretion disks, the solar wind, and the interstellar and intracluster med…
Variations in the spectral slope of Sgr A* during a NIR flare
S. Gillessen, F. Eisenhauer, E. Quataert +10
We have observed a bright flare of Sgr A* in the near infrared with the adaptive optics assisted integral field spectrometer SINFON. Within the uncertainties, the observed spectrum…
Nonthermal THz to TeV Emission from Stellar Wind Shocks in the Galactic Center
Eliot Quataert, Abraham Loeb
The central parsec of the Galaxy contains dozens of massive stars with a cumulative mass loss rate of ~ 10^{-3} solar masses per year. Shocks among these stellar winds produce the…
Shearing Box Simulations of the MRI in a Collisionless Plasma
Prateek Sharma, Gregory W. Hammett, Eliot Quataert +1
We describe local shearing box simulations of turbulence driven by the magnetorotational instability (MRI) in a collisionless plasma. Collisionless effects may be important in radi…
Radiation Pressure Supported Starburst Disks and AGN Fueling
Todd A. Thompson, Eliot Quataert, Norm Murray
We consider the structure of marginally Toomre-stable starburst disks under the assumption that radiation pressure on dust grains provides the dominant vertical support against gra…
Dissipationless Mergers of Elliptical Galaxies and the Evolution of the Fundamental Plane
Michael Boylan-Kolchin, Chung-Pei Ma, Eliot Quataert
We carry out numerical simulations of dissipationless major mergers of elliptical galaxies using initial galaxy models that consist of a dark matter halo and a stellar bulge with p…