A wind driven shell model for the absorption line systems in QSOs

Details A wind driven shell model for the absorption line systems in QSOs A wind driven shell model for the absorption line systems in QSOs

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.277..118d&link_type=abstract

Nature, vol. 277, Jan. 11, 1979, p. 118-120.

Physics

14

Absorption Spectra, Astronomical Models, Interstellar Gas, Line Spectra, Quasars, Stellar Winds, Cooling, Doppler Effect, Frequency Shift, Galactic Nuclei, Radiation Effects, Radiation Pressure

Scientific paper

The described intrinsic model for absorption line systems in QSO spectra is based on the assumption that the absorbing material consists of interstellar gas which has been swept up by winds emanating from QSO. The model is supported by studies of the physics of radiatively accelerated winds; these studies show that a significant fraction of the radiative energy output of a QSO must be converted into kinetic energy of an outflowing wind. The model is used to estimate parameters which suggest that absorption takes place in thin dense shells at distances of the order of kpc. The model indicates that, in contrast with the formation of the shell, the flow behavior depends strongly on the parameters.

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