Effect of a quasi-stellar object on its host galaxy - dynamical and physical processes in the interstellar medium around a quasi-stellar object
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. 29 references.
- Research Organization:
- Toronto Univ. (Canada); Pittsburgh Univ., PA (USA)
- OSTI ID:
- 5293832
- Journal Information:
- Astrophys. J.; (United States), Vol. 322
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
GALAXIES
QUASARS
BOUNDARY-VALUE PROBLEMS
HYDRODYNAMICS
INTERSTELLAR SPACE
MAPS
MASS DISTRIBUTION
PLASMA HEATING
SPIRAL CONFIGURATION
CONFIGURATION
COSMIC RADIO SOURCES
DISTRIBUTION
FLUID MECHANICS
HEATING
MECHANICS
SPACE
SPATIAL DISTRIBUTION
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105 - Astrophysics & Cosmology- Galaxies