Probing Dark Energy by Subaru FMOS Galaxy Redshift Survey

2014 Fiscal Year Final Research Report

• Project/Area Number: 23684007
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: The University of Tokyo (2012-2014); Kyoto University (2011)
• Principal Investigator: TOTANI Tomonori 東京大学, 理学(系)研究科(研究院), 教授 (90321588)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 宇宙論 / ダークエネルギー / 加速膨張 / 銀河分光サーベイ

Outline of Final Research Achievements

We performed a large-scale galaxy redshift survey using the new FMOS instrument of Subaru Telescope, and studied dark energy which is an important problem in cosmology. We successfully completed the two-year observing campaign, and got the large scale structure 3D map beyond redshift one for the first time, by using a few thousand galaxies at z ~ 1.5. We are now performing analysis about redshift space distortion, to test the theory of gravitation. The analysis has mostly been completed, and papers are in press, submitted, or in preparation.

Free Research Field

宇宙物理学