Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-03-18
Astronomy and Astrophysics
Astrophysics
18 pages, 5 figures, revised Version has been submitted to Physical Review A. (2nd author's affiliation corrected)
Scientific paper
10.1103/PhysRevA.60.273
The frequency shift of spectral lines is most often explained by the Doppler Effect in terms of relative motion, whereas the Doppler broadening of a particular line mainly depends on the absolute temperature. The Wolf effect on the other hand deals with the correlation induced spectral change and explains both the broadening and shift of the spectral lines. In this framework a relation between the width of the spectral line is related to the redshift z for the line and hence with the distance. For smaller values of z a relation similar to the Tully-Fisher relation can be obtained and for larger values of z a more general relation can be constructed. The derivation of this kind of relation based on dynamic multiple scattering theory may play a significant role in explaining the overall spectra of quasi stellar objects. We emphasize that this mechanism is not applicable for nearby galaxies, $z \leq 1$.
Dutta Suman
Kafatos Menas
Roy Sisir
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