Mathematics – Logic
Scientific paper
Dec 1962
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1962phrv..128.2871m&link_type=abstract
Physical Review, vol. 128, Issue 6, pp. 2871-2878
Mathematics
Logic
12
Scientific paper
The investigation deals with certain cosmological questions involved in the interpretation of the gamma-ray flux measurements made by the satellite Explorer XI. An expanding universe filled with similar sources of optical radiation is considered and the photon density in the neighborhood of an observer is obtained. Numerical values are given for the density of 1-eV photons when the sources are regarded as blackbodies at a temperature of 5000°K. The necessity of specifying the bandwidth, the model of the universe, and the scale of distance before a density can be stated, is emphasized. The models of the universe considered are those of general relativity and that of the steady-state theory. It is concluded that a photon density can be specified, in the present state of astronomical knowledge, only as lying within wide limits. The gamma-ray flux observed can be interpreted theoretically by the use of general relativity models in which the density of matter is rather high. An equally satisfactory interpretation is possible by the use of the steady-state theory. It is argued that the objections to the second theory, based on the Explorer XI data, refer only to the hypothesis of the creation of antiprotons and not to the theory itself.
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