Are Recent Peculiar Velocity Surveys Consistent?

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dc.creatorHudson, Michael J.
dc.creatorSmith, Russell J.
dc.creatorLucey, John R.
dc.creatorSchlegel, David J.
dc.creatorDavies, Roger L.
dc.date1999-09-17
dc.date.accessioned2026-07-07T02:33:20Z
dc.date.available2026-07-07T02:33:20Z
dc.descriptionWe compare the bulk flow of the SMAC sample to the predictions of popular cosmological models and to other recent large-scale peculiar velocity surveys. Both analyses account for aliasing of small-scale power due to the sparse and non-uniform sampling of the surveys. We conclude that the SMAC bulk flow is in marginal conflict with flat COBE-normalized Lambda-CDM models which fit the cluster abundance constraint. However, power spectra which are steeper shortward of the peak are consistent with all of the above constraints. When recent large-scale peculiar velocity surveys are compared, we conclude that all measured bulk flows (with the possible exception of that of Lauer & Postman) are consistent with each other given the errors, provided the latter allow for `cosmic covariance'. A rough estimate of the mean bulk flow of all surveys (except Lauer & Postman) is ~400 km/s towards l=270, b=0.
dc.description8 pages, 3 figures. To appear in Proceedings of the Cosmic Flows Workshop, Victoria, B. C., Canada, July 1999, eds. S. Courteau, M. Strauss, and J. Willick
dc.identifierhttps://arxiv.org/abs/astro-ph/9909307
dc.identifierhttp://arxiv.org/abs/astro-ph/9909307
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/14803
dc.subjectAstrophysics
dc.titleAre Recent Peculiar Velocity Surveys Consistent?
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