论文标题
移动镜头效应的最佳过滤器
Optimal filters for the moving lens effect
论文作者
论文摘要
我们评估使用宇宙学调查检测移动镜头效应的前景。宇宙学结构的批量运动引起了宇宙微波辐射（CMB）的小规模偶极温度各向异性，以光环为中心并沿横向速度场定向。我们为此信号引入了一组最佳过滤器，并预测可以通过即将进行的实验进行高显着性检测。我们讨论了使用匹配的过滤器在大尺度上重建大量横向速度场的前景，从而与使用二次估计器的先前工作找到了良好的一致性。
We assess the prospects for detecting the moving lens effect using cosmological surveys. The bulk motion of cosmological structure induces a small-scale dipolar temperature anisotropy of the cosmic microwave radiation (CMB), centered around halos and oriented along the transverse velocity field. We introduce a set of optimal filters for this signal, and forecast that a high significance detection can be made with upcoming experiments. We discuss the prospects for reconstructing the bulk transverse velocity field on large scales using matched filters, finding good agreement with previous work using quadratic estimators.
