Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.213..143h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 213, March 1, 1985, p. 143-155. Research supported by t
Astronomy and Astrophysics
Astronomy
10
Adiabatic Conditions, Astronomical Models, Galactic Clusters, Galactic Evolution, Galactic Structure, Gravitational Effects, Computerized Simulation, Correlation, Euler Equations Of Motion, Hubble Constant, Many Body Problem, Neutrinos
Scientific paper
Models containing the essential features of the adiabatic theory of galaxy formation are investigated. A cellular structure of uniform two-dimensional sheets of galaxies, with voids in between, is found to provide a natural explanation for the discrepancy between the observed clustering length (where the two-point correlation function is unity) and the expected scale of large-scale structure in a universe dominated by light neutrinos. An analysis of the growth of surface density perturbations within expanding two-dimensional 'pancakes' is shown to lead to structure on scales up to the scale of galaxy clusters, provided that galaxies are formed by local fragmentation of pancakes, and the pancaking epoch is rather early (zp ⪆ 3). It is also shown that rejection of the neutrino pancake theory on the basis of comparison of the correlation function with existing numerical simulations is premature.
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