Baryon acoustic oscillations in the Lyα forest of BOSS DR11 quasars
Baryon acoustic oscillations in the Lyα forest of BOSS DR11 quasars
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DOI：
10.1051/0004-6361/201423969
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发表时间：
2014-04
影响因子：
6.5
通讯作者：
T. Delubac;J. Bautista;N. Busca;J. Rich;D. Kirkby;S. Bailey;A. Font-Ribera;A. Slosar;K. Lee
中科院分区：
文献类型：
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作者：
T. Delubac;J. Bautista;N. Busca;J. Rich;D. Kirkby;S. Bailey;A. Font-Ribera;A. Slosar;K. Lee
我们报告了在高红移类星体 Ly 森林的通量相关函数中检测到重子声振荡（BAO）特征，其统计显着性为五个标准差。该研究使用了 SDSS-III 重子振荡光谱巡天 (BOSS) 数据发布 11 (DR11) 中红移范围 2:1 z 3:5 的 137,562 个类星体。该样本包含的类星体数量是之前研究中使用的类星体数量的三倍。 BAO 峰值的测量位置决定了角距离 DA(z = 2:34) 和膨胀率 H(z = 2:34)，两者的尺度均由阻力历元 rd 处的声层设定。我们发现 DA=rd =
We report a detection of the baryon acoustic oscillation (BAO) feature in the flux-correlation function of the Ly forest of high-redshift quasars with a statistical significance of five standard deviations. The study uses 137,562 quasars in the redshift range 2:1 z 3:5 from the Data Release 11 (DR11) of the Baryon Oscillation Spectroscopic Survey (BOSS) of SDSS-III. This sample contains three times the number of quasars used in previous studies. The measured position of the BAO peak determines the angular distance, DA(z = 2:34) and expansion rate, H(z = 2:34), both on a scale set by the sound horizon at the drag epoch, rd. We find DA=rd =