440 citations · 966 across the 20 of their papers we have counts for
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Three-Dimensional Simulations of Inflows Irradiated by a Precessing Accretion Disk in Active Galactic Nuclei: Formation of Outflows
Ryuichi Kurosawa, Daniel Proga
We present three-dimensional (3-D) hydrodynamical simulations of gas flows in the vicinity of an active galactic nucleus (AGN) powered by a precessing accretion disk. We consider t…
Low angular momentum accretion flow model of Sgr A* activity
B. Czerny, M. Moscibrodzka, D. Proga +2
Sgr A* is a source of strongly variable emission in several energy bands. It is generally agreed that this emission comes from the material surrounding the black hole which is eith…
Dynamics of Rotating Accretion Flows Irradiated by a Quasar
Daniel Proga, Jeremiah P. Ostriker, Ryuichi Kurosawa
We study the axisymmetric, time-dependent hydrodynamics of rotating flows that are under the influence of supermassive black hole gravity and radiation from an accretion disk surro…
Low angular momentum accretion in the collapsar: how long can a long GRB be?
Agnieszka Janiuk, Daniel Proga
The collapsar model is the most promising scenario to explain the huge release of energy associated with long duration gamma-ray-bursts (GRBs). Within this scenario GRBs are believ…
Accretion of Low Angular Momentum Material onto Black Holes: Radiation Properties of Axisymmetric MHD Flows
Monika Moscibrodzka, Daniel Proga, Bozena Czerny +1
Numerical simulations of MHD accretion flows in the vicinity of a supermasssive black hole provide important insights to the problem of why and how systems -- such as the Galactic…
Magnetohydrodynamic simulations of the collapsar model for early and late evolution of gamma-ray bursts
Daniel Proga
I present results from magnetohydrodynamic (MHD) simulations of a gaseous envelope collapsing onto a black hole. These results support the notion that the collapsar model is one of…