Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-10-10
Astron.Geophys.46:526-529,2005
Astronomy and Astrophysics
Astrophysics
6 pages, pure pdf. An introduction to WFMOS and Baryon Acoustic Oscillations for a general audience
Scientific paper
10.1111/j.1468-4004.2005.46526.x
Vast sound waves traveling through the relativistic plasma during the first million years of the universe imprint a preferred scale in the density of matter. We now have the ability to detect this characteristic fingerprint in the clustering of galaxies at various redshifts and use it to measure the acceleration of the expansion of the Universe. The Wide-Field Multi-Object Spectrograph (WFMOS) would use this test to shed significant light on the true nature of dark energy, the mysterious source of this cosmic acceleration. WFMOS would also revolutionise studies of the kinematics of the Milky Way and provide deep insights into the clustering of galaxies at redshifts up to z~4. In this article we discuss the recent progress in large galaxy redshift surveys and detail how WFMOS will help unravel the mystery of dark energy.
Bassett Bruce A.
Eisenstein Daniel J.
Energy Team The WFMOS Feasibility Study Dark
Nichol Robert C.
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