The cosmic flow in the Local Supercluster: Tracing PSCz tidal influence through optimized Least Action Principle

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dc.creatorRomano-Diaz, E.
dc.creatorBranchini, E.
dc.creatorvan de Weygaert, R.
dc.creator.
dc.date2001-09-19
dc.date.accessioned2026-07-07T02:00:05Z
dc.date.available2026-07-07T02:00:05Z
dc.descriptionWe assess the extent to which the flux-limited PSCz redshift sample is capable of accounting for the major share of mass concentrations inducing the external tidal forces affecting the peculiar velocities within the Local Supercluster (LS). The investigation is based upon a comparison of the ``true'' velocities in 2 large N-body simulations and their reconstruction from ``observation-mimicking'' mock catalogues. The mildly nonlinear ``mock'' LS and PSCz velocities are analyzed by means of the Least Action Principle technique in its highly optimized implementation of Nusser & Branchini's Fast Action Method (FAM). For both model N-body Universes, we conclude that the dipolar and quadrupolar force field implied by the PSCz galaxy distribution would indeed be sufficiently representing the full external tidal force field.
dc.description2 pages, 1 figure, contribution to ``Where's the Matter? Tracing Dark and Bright Matter with the New Generation of Large Scale Surveys'', June 2001, Treyer & Tresse Eds, Frontier Group
dc.identifierhttps://arxiv.org/abs/astro-ph/0109315
dc.identifierhttp://arxiv.org/abs/astro-ph/0109315
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3350
dc.subjectAstrophysics
dc.titleThe cosmic flow in the Local Supercluster: Tracing PSCz tidal influence through optimized Least Action Principle
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