Dynamic Multiple Scattering, frequency shift and possible effects on quasars astronomy

نویسندگان

  • Sisir Roy
  • Malabika Roy
  • Menas Kafatos
چکیده

The shifting of spectral lines due to induced correlation effect, discovered first by Wolf for the single scattering case which mimics the Doppler mechanism has been extended and developed further by the present authors to study the behavior of spectral lines in the case of multiple scattering and observed shifting, as well as broadening of the spectrum. We have explored Dynamic Multiple Scattering(DMS) theory for explaining anomalous redshifts in quasars. Our recent work, based on the statistical analysis of the Véron-Cetty data(2003) supports that quasar redshifts fit the overall Hubble expansion law, as in the case of galaxies, for z ≤ 0.295 but not for higher redshifts, indicating clearly the inadequacy of the Doppler effect as the sole mechanism in explaining the redshifts for high redshift quasars(z ≥ 0.295). We found that the redshift posseses an additive,“discordant” component due to frequency shifting from the correlation induced mechanism which increases gradually for ∼ 0.295 ≤ z ≤ 3.0, however, appearing to follow the evolutionary picture of the universe with absolute dependence on the physical characteristics i.e., environmental aspects of the relevant sources through which the light rays pass, after being multiply scattered. According our framework, as the environment around sources is diverse, subject to the age of the universe, it determines the amount of multiple scattering effect, probably, without additional additive effects for higher values i.e., for redshifts 3.00 ≤ z. The recent observational data on redshift z versus apparent magnitude(m) (Hubble like relation) are found to be in good agreement, considering suitable values of the induced correlation parameters. This resolution of the paradox of quasar redshifts is much more appealing and in a sense, more mainstream physics than either assigning redshift entirely to the Doppler effect or inventing a new, often unknown, physical mechanism. Our analysis indicates the importance of local environmental aspects of relevance (recent observations of molecular gases, the plasma like environment, evolution of the hydrogen content with epoch etc.) around quasars, especially for the higher redshift limits. Our work opens possible new vistas in quasar astronomy as well as for cosmological models of the universe. keywords Dynamic Multiple Scattering, Doppler shift, Quasars, Hubble law [Running Title: Dynamic Multiple scattering]

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عنوان ژورنال:
  • J. Comput. Meth. in Science and Engineering

دوره 13  شماره 

صفحات  -

تاریخ انتشار 2013