论文标题
脉冲星在球状簇M13中的发现和时机很快
Discovery and timing of pulsars in the globular cluster M13 with FAST
论文作者
论文摘要
我们报告了在球状群集M13（NGC 6205）中发现二进制毫秒的脉冲星（即PSR J1641+3627F或M13F），以及使用与五百千米的光圈型球形电台远程电视台（快速）一起使用的观测值（NGC 6205）和M13A到F的时序解决方案。 PSR J1641+3627F的自旋周期为3.00 ms，轨道周期为1.4天。最有可能的伴侣质量是0.16 m $ _ {\ odot} $。 M13A到E的均具有短的自旋期和少量衍生物。我们还确认，二进制毫秒Pulsar PSR J1641 $+$ 3627E（也是M13E）是一个黑寡妇，伴侣质量约为0.02 m $ _ {\ odot} $。我们发现，与球状簇脉冲星的典型二进制系统相比，所有二元系统的偏心率都低，并且它们随距离簇芯的距离而降低。这与预期的相一致，因为该群集的每个二进制率非常低。
We report the discovery of a binary millisecond pulsar (namely PSR J1641+3627F or M13F) in the globular cluster M13 (NGC 6205) and timing solutions of M13A to F using observations made with the Five-hundred-metre Aperture Spherical radio Telescope (FAST). PSR J1641+3627F has a spin period of 3.00 ms and an orbital period of 1.4 days. The most likely companion mass is 0.16 M$_{\odot}$. M13A to E all have short spin periods and small period derivatives. We also confirm that the binary millisecond pulsar PSR J1641$+$3627E (also M13E) is a black widow with a companion mass around 0.02 M$_{\odot}$. We find that all the binary systems have low eccentricities compared to those typical for globular cluster pulsars and that they decrease with distance from the cluster core. This is consistent with what is expected as this cluster has a very low encounter rate per binary.
