论文标题
观察层析成像宇宙剪切调查中的重男性声学振荡
Observing Baryonic Acoustic Oscillations in tomographic cosmic shear surveys
论文作者
论文摘要
我们表明，一旦将无效的转换应用于数据，就可以在表现出Baryonic声学振荡（BAO）特征的层析成像宇宙剪切观察中构建有效的物质密度谱。可以重建这些特征的幅度和位置的精度是根据天空覆盖率，内在形状噪声，中值源红移和源数密度来量化的。欧几里得或LSST中的BAO检测将以适度的信号噪声比率进行。对于更深入的调查，它将显着改善。
We show that it is possible to build effective matter density power spectra in tomographic cosmic shear observations that exhibit the Baryonic Acoustic Oscillations (BAO) features once a nulling transformation has been applied to the data. The precision with which the amplitude and position of these features can be reconstructed is quantified in terms of sky coverage, intrinsic shape noise, median source redshift and number density of sources. BAO detection in Euclid or LSST like wide surveys will be possible with a modest signal-to-noise ratio. It would improve dramatically for slightly deeper surveys.
