论文标题
扩展的增量图：一种基于地图的CMB极化观测的前景去除方法
Extended Delta-map: a map-based foreground removal method for CMB polarization observations
论文作者
论文摘要
为了使用宇宙微波极化各向异性的$ b $ mode模式提取通货膨胀重力波的信息，我们需要从银河系中去除前景辐射。在我们先前用于去除前景的DELTA-MAP方法中，观察带的数量仅限于假定前景模型的参数数量，因此很难通过增加观察带的数量来提高灵敏度。在这里，我们扩展了先前的方法，以便它可以适应任意数量的观察带。使用参数可能性和逼真的前景和CMB模拟，我们表明我们的方法可以提高对张量比比率$ r $ $ r $的敏感性，而不会引起任何明显的偏见。
In order to extract information about inflationary gravitational waves using $B$-mode patterns of cosmic microwave polarization anisotropy, we need to remove the foreground radiation from the Milky Way. In our previous delta-map method for foreground removal, the number of observation bands was limited to the number of parameters of the assumed foreground model, and therefore it was difficult to improve the sensitivity by increasing the number of observation bands. Here, we extend the previous method so that it can be adapted to an arbitrary number of observation bands. Using parametric likelihood and realistic foreground and CMB simulations, we show that our method can increase the sensitivity to the tensor-to-scalar ratio $r$ without inducing any significant bias.
