| Speaker: |
Jim Gunn (Princeton Univ.) |
| Date: |
Jan 28 (Mon), pm 3:30, Room 633, 6th floor, Research Centers Building, Kashiwa Campus |
| Abstract: |
I will discuss the proposed Baryon Oscillation Spectroscopic Survey, which is the largest component in the proposed 6-year extension of the SDSS. The survey will obtain redshifts of 1.5 million luminous elliptical galaxies in the redshift range 0.3-0.8 and 160,000 quasars in the redshift range 2.2-3.0. These data will allow the determination of both the luminosity distance and the Hubble expansion parameter to very high accuracy for about three redshift points in those redshift ranges. Using these determinations, very strong constraints on the behavior of dark energy since about redshift 2 can be obtained. |
