Measurements of Cosmic Microwave Background Polarization at QUIET

我们对宇宙微波背景的偏振进行了精确的测量，这是宇宙诞生后发出的“最古老的光”。这些观测是使用位于智利阿塔卡马海拔5080米的QUIET望远镜进行的，为期两年多。我们成功地测量了E-模式偏振与2^<nd>最好的精度到目前为止报道。这一结果与标准宇宙学模型的预期一致。我们还寻找了暴胀理论预言的B模偏振态，得到了迄今<nd>为止得到的最佳上限。

We performed precise measurements of the polarization of the cosmic microwave background, which is "the oldest light" emitted right after the birth of the universe. The observations were carried out for more than 2 years using the QUIET telescope located at the altitude of 5080m in Atacama, Chile. We successfully measured the E-mode polarization with the 2^<nd> best precision so far reported. The result was consistent with the expectation from the standard cosmology model. We also searched for the B-mode polarization predicted by inflation theories, and obtained the 2^<nd> best upper limit obtained so far.