论文标题
当地宇宙扩展的四个提示和测试候选者
Four hints and test candidates of the local cosmic expansion
论文作者
论文摘要
宇宙在短距离尺度上的膨胀是研究暗能量的新边界。二元脉冲星中过量的轨道衰减可能与局部宇宙膨胀的加速有关，称为宇宙阻力。对两个独立二进制文件（PSR B1534+12和PSR B1913+16）的现代观察支持了这种解释，并导致与粘性均匀性的尺度无关扩张，其中二进制系统的扩展速率比哈勃常数较小。本文显示了其他证据二进制文件（PSR J1012-5307和PSR J1906+0746），支持宇宙拖动图片。常规模型的总体异常约为3.6 \，σ$，其中包括之前报道的两个证据二进制文件。此外，已经计算了针对NS-NS二元和NS-WD二进制的典型模型计算的宇宙阻力范围。在该地区，列出了六个测试候选者，并预测了过量的轨道衰变。
The expansion of the universe on short distance scales is a new frontier to investigate the dark energy. The excess orbital decay in binary pulsars may be related to acceleration by the local cosmic expansion, called the cosmic drag. Modern observations of two independent binaries (PSR B1534+12 and PSR B1913+16) support this interpretation and result in a scale-independent expansion with viscous uniformity, in which binary systems have a smaller expansion rate than the Hubble constant. This paper shows additional evidential binaries (PSR J1012-5307 and PSR J1906+0746), supporting the cosmic drag picture. The total anomaly of the conventional model is about $3.6\,σ$ including two evidential binaries reported before. In addition, an observable range of the cosmic drag has been calculated for typical models of both NS-NS binary and NS-WD binary. In this region, six test candidates are listed with predictions of the excess orbital decay.
