First results from the Very Small Array -- III. The cosmic microwave background power spectrum

2002/05/31 by Paul F. Scott, Pedro Carreira, Kieran Cleary +42 · 5 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Radio Astronomy Observations and Technology #astro-ph

paper · pdf · doi:10.1046/j.1365-8711.2003.06354.x

published as Mon.Not.Roy.Astron.Soc.341:1076,2003 · 10 pages, 6 figure, MNRAS in press. (Minor revisions - accepted 17 December 2002)

arxiv created 2003/03/04 · openalex publication_date 2003/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present the power spectrum of the fluctuations in the cosmic microwave background detected by the Very Small Array (VSA) in its first season of observations in its compact configuration. We find clear detections of first and second acoustic peaks at ℓ≈ 200 and ≈550, plus detection of power on scales up to ℓ= 800. The VSA power spectrum is in very good agreement with the results of the BOOMERanG, DASI and MAXIMA telescopes despite the differing potential systematic errors.

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