Physics – Fluid Dynamics
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...322..180c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 322, Nov. 1, 1987, p. 180-200. Research supported by Connaught Fund.
Physics
Fluid Dynamics
21
Fluid Dynamics, Interstellar Matter, Quasars, Radiation Distribution, Spiral Galaxies, Astronomical Maps, Boundary Value Problems, Mass Distribution, Plasma Heating
Scientific paper
The dynamical and physical processes in the ISM around a QSO have been calculated in order to understand the effects of QSO radiation on the host galaxy. Numerical hydrodynamical solutions for one- and two-dimensional cases are found through a MacCormack differencing scheme. Ion-field emission, ion sputtering, charge equilibrium, thermal equilibrium, coupling between gas ions and dust grains, photoionization, and photoelectrical processes are considered. The results show that dust grains play an important role in determining the dynamics of the ISM around a QSO. Inside 7 kpc, all dust grains are destroyed in about 30 million yr. Gas goes to large distances in the galactic plane and leaves the galaxy.
Chang Allen C.
Schiano V. R. A.
Wolfe Arthur M.
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