Can explosions generate large-scale cosmological structure?

Details Can explosions generate large-scale cosmological structure? Can explosions generate large-scale cosmological structure?

Feb 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.325..598s&link_type=abstract

Nature (ISSN 0028-0836), vol. 325, Feb. 12, 1987, p. 598-601.

Computer Science

22

Big Bang Cosmology, Explosions, Galactic Evolution, Universe, Computerized Simulation, Correlation, Dark Matter, Histograms, Many Body Problem, Space Density

Scientific paper

The explosion model is successful in explaining certain features of galaxy formation but it is not clear a priori whether it can account for the large-scale distribution of galaxies. In particular, recent claims to have found 'bubbly' structure raise the question of whether explosions could have generated bubbles as large as observed. The authors address this question semi-quantitatively, using analytic estimates and the results of first N-body simulations. It is concluded that, in a flat Universe, the explosion model can produce a galaxy distribution on scales of a few to a few tens of megaparsecs which is not in apparent conflict with observations provided the galaxies formed at a redshift z ≈ 5 - 10.

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