Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975qjras..16..378h&link_type=abstract
Royal Astronomical Society, Quarterly Journal, vol. 16, Dec. 1975, p. 378-409.
Astronomy and Astrophysics
Astronomy
5
Astronomy, Electromagnetic Spectra, Statistical Distributions, Universe, Frequency Ranges, Gamma Rays, Infrared Astronomy, Logarithms, Poisson Density Functions, Radio Astronomy, Spectral Resolution, X Ray Astronomy
Scientific paper
A class of phenomena, Class A, is defined in which each member differs from all other Class A phenomena by a factor of at least 1,000 in at least one observational trait. A phase space of observations containing all conceivable astronomical observations of the universe is constructed and its volume is estimated. The number of Class A phenomena recognized in only one way is designated as A, and the number recognized in two independent ways as B. The method of Poisson statistics is applied to estimate the number of Class A phenomena characterizing the universe; the estimated number is of the order one hundred. It is predicted that new phenomena are most likely to be discovered by searching in currently inaccessible domains of the phase space. A provisional list of 45 known Class A phenomena is presented.
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