The cosmological problem and its hypotheses. V - Confrontation with observations. II

Details The cosmological problem and its hypotheses. V - Confrontation with observations. II The cosmological problem and its hypotheses. V - Confrontation with observations. II

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977orion..35..194d&link_type=abstract

Orion, vol. 35, Dec. 1977, p. 194-198. In French.

Mathematics

Logic

Cosmology, Hubble Diagram, Red Shift, Thermal Radiation, Neutrinos, Photons, Solar Corpuscular Radiation, White Dwarf Stars

Scientific paper

The Hoyle-Narlikar and the Dirac cosmological theories are examined from the viewpoint of how certain available observations can be incorporated into them. These observations are the 3 K thermal radiation, the log N-log S relation (where N is number of radiogalaxies and S is the minimum emitted flux at a given wavelength), and the Hubble diagram. It is pointed out that it is not possible to extend the Hubble diagram even though quasars have been found with a redshift of 3.5 unless it is certain that this redshift is of purely cosmological origin. Varshni's theory is mentioned, according to which a quasar is an old star similar to the central star of a planetary nebula having an atmosphere in which laser radiation is produced, so that the radiation is not redshifted at all.

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