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A new method of measuring the cluster peculiar velocity power spectrum

Journal Article · · Mon.Not.Roy.Astron.Soc.
 [1];  [2];  [3];  [4]
  1. Shanghai, Astron. Observ.; Fermilab
  2. Kansas U.
  3. Warsaw, Copernicus Astron. Ctr.; Zielona Gora, Pedagogical U.
  4. Fermilab
+ Show Author Affiliations
We propose to use spatial correlations of the kinetic Sunyaev-Zeldovich (KSZ) flux as an estimator of the peculiar velocity power spectrum. In contrast with conventional techniques, our new method does not require measurements of the thermal SZ signal or the X-ray temperature. Moreover, this method has the special advantage that the expected systematic errors are always sub-dominant to statistical errors on all scales and redshifts of interest. We show that future large sky coverage KSZ surveys may allow a peculiar velocity power spectrum estimates of an accuracy reaching ~10%.
Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
DOE Contract Number:
AC02-07CH11359
OSTI ID:
1864194
Report Number(s):
FERMILAB-PUB-08-727-A; arXiv:0806.4190; oai:inspirehep.net:789152
Journal Information:
Mon.Not.Roy.Astron.Soc., Journal Name: Mon.Not.Roy.Astron.Soc. Vol. 388
Country of Publication:
United States
Language:
English

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