Volume 386, Number 2, May I 2002
|Page(s)||757 - 762|
|Section||Section $secnum inconnue|
|Published online||15 May 2002|
Comptonization and synchrotron emission in 2D accretion flows
I. A new numerical solver for the Kompaneets equation
Max-Planck-Institut für Astronomie, 69117 Heidelberg, Germany
2 Landessternwarte-Koenigstuhl, 69117 Heidelberg, Germany
3 Institute of Applied Mathematics, University of Heidelberg, 69120 Heidelberg, Germany
Corresponding author: A. Hujeirat, A.Hujeirat@lsw.uni-heidelberg.de
Accepted: 31 January 2002
A numerical approach is presented for solving the hydro-magnetic radiative transfer equation in 4D, in which the action of the Kompaneets operator and synchrotron cooling are taken into account. The equation is solved using the pre-conditioned Black-White-Brown line Gauss-Seidel semi-iterative method. This alternating approach enables the use of vector and parallel machines without loss of efficiency. The method can be used to constrain and search for density-, temperature- and magnetic-field distributions with or without outflows. This is appropriate for displaying spectra of 2D accretion flows that are consistent with observations of low-mass X-ray binaries.
Key words: methods: numerical / accretion, accretion disks / radiative transfer / black hole physics
© ESO, 2002
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