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FASTSOUND: PROBING THE ORIGIN OF COSMIC ACCELERATION BY GALAXY CLUSTERING AT z ~ 1.3 WITH SUBARU/FMOS

  • TOTANI, TOMONORI (Department of Astronomy, Graduate School of Science, the University of Tokyo)
  • Received : 2014.11.30
  • Accepted : 2015.06.30
  • Published : 2015.09.30
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Abstract

The FastSound project is a galaxy redshift survey using Subaru/FMOS to detect $H{\alpha}$ emitting galaxies at z ~ 1:3, for the purpose of probing the origin of the accelerated expansion of the universe. The survey has detected ~4,000 galaxy redshifts in a total area of $30deg^2$, and detected the redshift space distortion at this redshift range for the first time. The redshift space distortion (RSD) signal will be used to derive a measurement of the growth rate of large scale structure, which will provide a test for modified gravity as a possible origin of accelerated cosmic explansion. Here we present an overview and the current status of the project.

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