Title: Dark Energy Cosmology with the Alternative Cosmic Microwave Background Data Show Chinese title

Title: 暗能量宇宙学与替代宇宙微波背景数据

Abstract: Recently, in a series of works by Liu and Li (L&L), they claimed that there exists a timing asynchrony of $-25.6\,$ms between the spacecraft attitude and radiometer output timestamps in the original raw WMAP time-ordered data (TOD). L&L reprocessed the WMAP data while the aforementioned timing asynchrony has been corrected, and they obtained an alternative CMB map in which the quadrupole dropped to nearly zero. In the present work, we try to see the implications to dark energy cosmology if L&L are right. While L&L claimed that there is a bug in the WMAP pipeline which leads to significantly different cosmological parameters, an interesting question naturally arises, namely, how robust is the current dark energy cosmology with respect to systematic errors and bugs? So, in this work, we adopt the alternative CMB data of L&L as a strawman to study the robustness of dark energy predictions. Show Chinese abstract

Abstract: 最近，在刘和李（L&L）的一系列工作中，他们声称在原始的WMAP时间顺序数据（TOD）中，航天器姿态和辐射计输出时间戳之间存在$-25.6\,$毫秒的定时不同步。 L&L在修正了上述定时不同步后重新处理了WMAP数据，并得到了一个替代的CMB图，在该图中四极矩几乎降至零。 在本研究中，我们试图探讨如果L&L是正确的，会对暗能量宇宙学产生什么影响。 虽然L&L声称WMAP管道中存在一个错误，导致宇宙学参数显著不同，但一个有趣的问题自然出现，即当前的暗能量宇宙学在系统误差和错误方面有多稳健？ 因此，在这项工作中，我们采用L&L的替代CMB数据作为一个假设案例，以研究暗能量预测的稳健性。