Radiative Properties of Magnetically Arrested Disks
نویسندگان
چکیده
منابع مشابه
Magnetically Arrested Disks and Origin of Poynting Jets: Numerical Study
The dynamics and structure of accretion disks, which accumulate the vertical magnetic field in the centers, are investigated using twoand three-dimensional MHD simulations. The central field can be built up to the equipartition level and disrupts a nearly axisymmetric outer accretion disk inside a magnetospheric radius, forming a magnetically arrested disk (MAD). In the MAD, the mass accretes i...
متن کاملMagnetically Torqued Thin Accretion Disks
We compute the properties of a geometrically thin, steady accretion disk surrounding a central rotating, magnetized star. The magnetosphere is assumed to entrain the disk over a wide range of radii. The model is simplified in that we adopt two (alternate) ad hoc, but plausible, expressions for the azimuthal component of the magnetic field as a function of radial distance. We find a solution for...
متن کاملMagnetically Arrested Disk: an Energetically Efficient Accretion Flow
We describe an accretion model around a black hole which behaves like a practical analog of an idealized engine originally proposed by Geroch and Bekenstein. The Geroch-Bekenstein engine has nearly 100% efficiency in converting rest mass of accreting matter into useful energy at infinity. Based on recent 3D MHD simulations of black hole accretion, we assume that the accreting gas drags in a str...
متن کاملRadiative Transfer in Protoplanetary Disks
We present a new 3D continuum radiative transfer code, MCFOST, based on a Monte-Carlo method. The reliability and efficiency of the code is tested by comparison with five different radiative transfer codes previously tested by Pascucci et al. (2004), using a 2D disk configuration. When tested against the same disk configuration, no significant difference is found between the temperature and SED...
متن کاملUnsteady MHD nonlinear radiative squeezing slip-flow of Casson fluid between parallel disks
Effect of nonlinear thermal radiation on the unsteady magnetohydrodynamic slip flow of Casson fluid between parallel disks in the presence of thermophoresis and Brownian motion effects are investigated numerically. A similarity transformation is employed to reduce the governing partial differential equations into ordinary differential equations. Further, Runge-Kutta and Newton’s methods are ado...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2019
ISSN: 1538-4357
DOI: 10.3847/1538-4357/ab5848