论文标题
多普勒促进灰尘排放和cib-galaxy互相关：宇宙学和天体物理学的新探针
Doppler boosted dust emission and CIB-galaxy cross-correlations: a new probe of cosmology and astrophysics
论文作者
论文摘要
我们确定了一个新的宇宙信号，即多普勒增强的宇宙红外背景（DB-CIB），这是由星系的特殊运动引起的，该星系的热粉尘发射源宇宙红外背景（CIB）。这种新的可观察到的是对宇宙速度场的独立探针，与众所周知的运动学Sunyaev-Zel'Dovich（KSZ）效应高度相似。有趣的是，DB-CIB不会遭受“ KSZ光学深度变性”的困扰，从而使其不受银河系形成的复杂天体物理的影响。我们预测，在CCAT-PRIME和DESI样实验的互相关中，DB-CIB效应可检测到。我们表明，它也是一个新的CMB前景，即使没有正确考虑，它可能会偏向于未来的KSZ互相关。
We identify a new cosmological signal, the Doppler-boosted Cosmic Infrared Background (DB-CIB), arising from the peculiar motion of the galaxies whose thermal dust emission source the cosmic infrared background (CIB). This new observable is an independent probe of the cosmic velocity field, highly analogous to the well-known kinematic Sunyaev-Zel'dovich (kSZ) effect. Interestingly, DB-CIB does not suffer from the 'kSZ optical depth degeneracy', making it immune from the complex astrophysics of galaxy formation. We forecast that the DB-CIB effect is detectable in the cross-correlation of CCAT-Prime and DESI-like experiments. We show that it also acts as a new CMB foreground which can bias future kSZ cross-correlations, if not properly accounted for.
