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A Unified Model of Cosmic Ray Propagation and Radio Extreme Scattering Events from Intermittent Interstellar Structures
Philipp Kempski, Dongzi Li, Drummond B. Fielding +5
Intermittent magnetic structures are a plausible candidate for explaining cosmic-ray (CR) diffusion rates derived from observed CR energy spectra. Independently, studies of extreme…
Nonlinear perturbations and weak shock waves in isentropic atmospheres
Tamar Faran, Christopher D. Matzner, Eliot Quataert
Acoustic perturbations to stellar envelopes can lead to the formation of weak shock waves via nonlinear wave-steepening. Close to the stellar surface, the weak shock wave increases…
Rapid, strongly magnetized accretion in the zero-net-vertical-flux shearing box
Jonathan Squire, Eliot Quataert, Philip F. Hopkins
We show that there exist two qualitatively distinct turbulent states of the zero-net-vertical-flux shearing box. The first, which has been studied in detail previously, is characte…
Elevated UV luminosity density at Cosmic Dawn explained by non-evolving, weakly mass-dependent star formation efficiency
Robert Feldmann, Michael Boylan-Kolchin, James S. Bullock +11
Recent observations with the James Webb Space Telescope (JWST) have uncovered unexpectedly high cosmic star formation activity in the early Universe, mere hundreds of millions of y…
Tidal Disruption of a Star on a Nearly Circular Orbit
Itai Linial, Eliot Quataert
We consider Roche lobe overflow (RLO) from a low-mass star on a nearly circular orbit, onto a supermassive black hole (SMBH). If mass transfer is unstable, its rate accelerates in…
Magnetized Accretion onto and Feedback from Supermassive Black Holes in Elliptical Galaxies
Minghao Guo, James M. Stone, Eliot Quataert +1
We present three-dimensional magnetohydrodynamic (MHD) simulations of the fueling of supermassive black holes in elliptical galaxies from a turbulent cooling medium on galactic sca…