SIMULATIONS OF VISCOUS ACCRETION FLOW AROUND BLACK HOLES IN A TWO-DIMENSIONAL CYLINDRICAL GEOMETRY

• Published in: The Astrophysical journal Vol. 831; no. 1; pp. 33 - 54
• Main Authors: Lee, Seong-Jae, Chattopadhyay, Indranil, Kumar, Rajiv, Hyung, Siek, Ryu, Dongsu
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01.11.2016; IOP Publishing
• Subjects: ACCRETION DISKS; accretion, accretion disks; ACCURACY; AMPLITUDES; ANALYTICAL SOLUTION; ANGULAR MOMENTUM; Astrophysics; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BLACK HOLES; DISTRIBUTION; EMISSION; Exact solutions; HARD X RADIATION; Hard X-rays; HYDRODYNAMIC MODEL; hydrodynamics; Initial conditions; instabilities; INSTABILITY; Jets; LAGRANGIAN FUNCTION; Mathematical analysis; methods: numerical; OSCILLATIONS; Periodicities; PERIODICITY; QUASARS; Quasi-Periodic Oscillations; SIMULATION; TRANSIENTS; TWO-DIMENSIONAL CALCULATIONS; VISCOSITY

ABSTRACT We simulate shock-free and shocked viscous accretion flows onto a black hole in a two-dimensional cylindrical geometry, where initial conditions were chosen from analytical solutions. The simulation code used the Lagrangian total variation diminishing plus remap routine, which enabled us to...