报告题目：Measurement of the Baryon Acoustic Oscillations from the Dark Energy Survey

报 告 人：Kwan Chuen Chan (Sun Yat-sen Univ.)

报告时间：Thursday, March 08, 2018, 02:00pm

报告地点：蒙民伟科技南楼S727

报告摘要：We present the measurement of Baryon Acoustic Oscillations (BAO) using the first year data from the Dark Energy Survey. Using a sample of 1.3 million galaxies over a footprint of 1300 sq. deg in the redshift range [0.6,1], we get a 4 per cent distance measurement D_A(z_eff = 0.81) / r_d = 10.75 +- 0.43. The details of the measurement using the angular correlation function will be presented. This is the most precise measurement of the BAO using photometric data. The results are consistent with the Planck cosmology.