WFMOS - Sounding the Dark Cosmos

Abstract

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.

6 pages, pure pdf. An introduction to WFMOS and Baryon Acoustic Oscillations for a general audience

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• Forecasting the Dark Energy Measurement with Baryon Acoustic Oscillations: Prospects for the LAMOST surveys
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• Topology of large scale structure as test of modified gravity
• Constraining dark energy via baryon acoustic oscillations in the (an)isotropic light-cone power spectrum
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• Tracing the equation of state and the density of cosmological constant along z
• Optimizing future dark energy surveys for model selection goals
• Self calibration of galaxy bias in spectroscopic redshift surveys of baryon acoustic oscillations