Measuring Bulk Flows in Large Scale Surveys

Details Measuring Bulk Flows in Large Scale Surveys Measuring Bulk Flows in Large Scale Surveys

1993-09-15

arxiv.org/abs/astro-ph/9309022v1

Astronomy and Astrophysics

Astrophysics

9 pages, uuencode compressed postscript file. Proceedings of IAP Colloq 9, "Cosmological Velocity Fields" ed. F Bouchet & M. L

Scientific paper

We follow a formalism presented by Kaiser to calculate the variance of bulk flows in large scale surveys. We apply the formalism to a mock survey of Abell clusters \'a la Lauer \& Postman and find the variance in the expected bulk velocities in a universe with CDM, MDM and IRAS--QDOT power spectra. We calculate the velocity variance as a function of the 1--D velocity dispersion of the clusters and the size of the survey.

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