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  1. Radiation GRMHD Models of Accretion onto Stellar-mass Black Holes. II. Super-Eddington Accretion

    Publication
    We present a comprehensive analysis of super-Eddington black hole accretion simulations that solve the GRMHD equations coupled with angle-discretized radiation transport. The simulations span a range …

  2. Radiation GRMHD Models of Accretion onto Stellar-mass Black Holes. I. Survey of Eddington Ratios

    Publication
    We summarize results from a survey of radiation-dominated black hole accretion flows across a wide range of mass accretion rates, as well as two values of black …

  3. Magnetosonic Waves as a Potential Driver of Observed Temperature Fluctuation Patterns in AGN Accretion Disks

    Publication
    Recent observations have revealed slow, coherent temperature fluctuations in AGN disks that propagate both inward and outward at velocities of ∼0.01–0.1c, a kind of variability …

  4. The plunging region of a thin accretion disc around a Schwarzschild black hole

    Publication
    A set of analytic solutions for the plunging region thermodynamics has been developed recently under the assumption that the fluid undergoes a gravity-dominated geodesic plunge into the …

  5. Radiation and Magnetic Pressure Support in Accretion Disks Around Supermassive Black Holes and the Physical Origin of the Extreme-ultraviolet to Soft X-Ray Spectrum

    Publication
    We present the results of four 3D radiation magnetohydrodynamic simulations of accretion disks around a 10\(^{8}\) solar mass black hole, which produce the far-ultraviolet spectrum peak …

  6. A Parameter Survey of Neutron Star Accretion Column Simulations

    Publication
    We conduct a parameter survey of neutron star accretion column simulations by solving the relativistic radiation MHD equations with opacities that account for strong magnetic fields and pair …