Astronomy and Astrophysics – Astronomy
Scientific paper
May 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.191..107p&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 191, no. 1, May 1992, p. 107-124.
Astronomy and Astrophysics
Astronomy
4
Astronomical Models, Compact Galaxies, Cosmic Dust, Red Shift, Sky Surveys (Astronomy), Einstein Equations, Hubble Constant, Quasars, Universe
Scientific paper
The possibility of a nontrivial compactified topology of the universe as one explanation for the observed regularity of galaxy distribution in pencil-beam surveys is explored. The present overall picture (nontrivial topology, fundamental cell of size approximately equal to 280/h Mpc, moderate present inflation less than 0, and Lambda greater than 0) is argued to be self-consistent. In this picture the universe is not an infinite and unsurveyable multitude in which all the possibilities may be realized, but a finite and surveyable 'solitude', a solitary and unique object. A positive Lambda term is indicated; it may have three different origins. There may be a geometric Lambda term in the gravitational equation. Pure thermodynamic considerations show that the thermodynamic pressure is undefined up to a few zero point constants, and these constants may enter the Einstein equations through the energy-momentum tensor, although not exactly as a Lambda term.
Horvath Ildiko
Lukacs Béla
Paál Gy.
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