论文标题
部分可观测时空混沌系统的无模型预测
Improving Distances to Binary Millisecond Pulsars with Gaia
论文作者
论文摘要
众所周知，Pulsar距离很难测量，并且在许多基本物理实验中起着重要作用，例如Pulsar Pursing Arrays（PTA）。在这里，我们在国际PTA Pulsars（IPTA）和Gaia的DR2和DR3之间进行了交叉匹配。然后，我们将IPTA Pulsar的视差与其在Gaia中发现的二元同伴的视差相结合，以改善二进制的距离测量。我们在Gaia Dr2中发现了7个交叉匹配的IPTA脉冲星，当使用Gaia Dr3时，我们发现6个IPTA Pulsar交叉匹配，但有7个Gaia对象。从Gaia DR2转到Gaia DR3，我们发现成功交叉匹配的脉冲星的Gaia视差提高了53美元\％$，Pulsar距离提高了29美元\％$。最后，我们发现具有$ <3.0σ$检测的二进制伴侣是不可靠的关联，为成功的交叉匹配设定了高标准。
Pulsar distances are notoriously difficult to measure, and play an important role in many fundamental physics experiments, such as pulsar timing arrays (PTAs). Here we perform a cross-match between International PTA pulsars (IPTA) and Gaia's DR2 and DR3. We then combine the IPTA pulsar's parallax with its binary companion's parallax, found in Gaia, to improve the distance measurement to the binary. We find 7 cross-matched IPTA pulsars in Gaia DR2, and when using Gaia DR3, we find 6 IPTA pulsar cross-matches, but with 7 Gaia objects. Moving from Gaia DR2 to Gaia DR3, we find that the Gaia parallaxes for the successfully cross-matched pulsars improved by $53\%$, and pulsar distances improved by $29\%$. Finally, we find that binary companions with a $<3.0σ$ detection are unreliable associations, setting a high bar for successful cross-matches.
