Physics
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....74...12s&link_type=abstract
Astronomy and Astrophysics, vol. 74, no. 1, Apr. 1979, p. 12-14.
Physics
1
Photons, Red Shift, Spectral Line Width, Center Of Gravity, Cosmology, Field Theory (Physics), Relativity
Scientific paper
Consequences of theory of Maric et al. (1976) that redshifts result from the ageing of photons by collisions with a hypothetical particle are investigated. It is shown that the collisional cross section given by Maric et al. leads only to a displacement of a spectral line's center of gravity but not to a displacement of the line itself; this effect is called a pseudoredshift. The resulting line profile is found to have a singularity close to the energy of the photon at the source and to swell toward low energies when the pseudoredshift increases. It is concluded that a different cross section should be considered in order to match the constraints of constancy of relative redshift as a function of wavelength over a large range of frequencies and narrowness of the solid angle in which a photon is distributed after collision with a hypothetical particle.
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