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topology of large-scale structure in seeded hot dark matter modelsThe topology of the isodensity surfaces in seeded hot dark matter models, in which static seed masses provide the density perturbations in a universe dominated by massive neutrinos is examined. When smoothed with a Gaussian window, the linear initial conditions in these models show no trace of non-Gaussian behavior for r0 equal to or greater than 5 Mpc (h = 1/2), except for very low seed densities, which show a shift toward isolated peaks. An approximate analytic expression is given for the genus curve expected in linear density fields from randomly distributed seed masses. The evolved models have a Gaussian topology for r0 = 10 Mpc, but show a shift toward a cellular topology with r0 = 5 Mpc; Gaussian models with an identical power spectrum show the same behavior.
Document ID
19920044679
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Beaky, Matthew M.
(NASA Headquarters Washington, DC United States)
Scherrer, Robert J.
(NASA Headquarters Washington, DC United States)
Villumsen, Jens V.
(Ohio State University Columbus, United States)
Date Acquired
August 15, 2013
Publication Date
March 10, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 387
ISSN: 0004-637X
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAGW-2589
CONTRACT_GRANT: NSF AST-89-21001
CONTRACT_GRANT: DE-AC02-76ER-01545
Distribution Limits
Public
Copyright
Other