论文标题
PSR J2045+3633的精确质量测量
A precise mass measurement of PSR J2045+3633
论文作者
论文摘要
我们介绍了进行定时分析的结果，目的是获得可回收的PULSAR J2045+3633的质量测量。使用Effelsberg，Nançay和Lovell射电望远镜进行常规的高积极观测，以及与Arecibo Telescope和Effelsberg的有针对性的广告系列，我们为此Pulsar组装了一个6年的正时数据集。我们测量了轨道半轴轴（$ \ dot {x} $）的适当运动和相关变化速率的高度显着值，并获得了periastron Time（$ \ \dotΩ$）的前进速率的高精度值（$ \dotΩ$），以及两个shapiro延迟参数（$ h_ __ {3} $ {3} $和$ $ $）。这使我们能够通过一个数量级来改进脉冲星和同伴群众的测量值（$1σ$不确定性）$ 1.251^{+0.021} _ { - 0.021} \，\ text {m} $ 0.873^{+0.016} _ { - 0.014} \，\ Text {M} _ {\ odot} $的白矮人伴侣，并允许我们在二进制系统的几何方向上放置改进的约束。使用我们对二元组分质量和轨道大小的测量，我们考虑了系统的进化场景。
We present the results of a timing analysis undertaken with the goal of obtaining an improved mass measurement of the recycled pulsar J2045+3633. Using regular high-cadence observations with the Effelsberg, Nançay, and Lovell radio telescopes, together with targeted campaigns with the Arecibo Telescope and Effelsberg, we have assembled a 6-yr timing data set for this pulsar. We measure highly significant values for the proper motion and the related rate of change of orbital semi-major axis ($\dot{x}$), and have obtained high precision values of the rate of advance of periastron time ($\dotω$), and two of the Shapiro delay parameters ($h_{3}$ and $ς$). This has allowed us to improve the measurements of the pulsar and companion masses by an order of magnitude, yielding (with $1σ$ uncertainties) $1.251^{+0.021}_{-0.021}\,\text{M}_{\odot}$ for PSR J2045+3633, and $0.873^{+0.016}_{-0.014}\,\text{M}_{\odot}$ for its white dwarf companion, and has allowed us to place improved constraints on the geometrical orientation of the binary system. Using our measurements of the binary component masses and the orbital size, we consider possible evolutionary scenarios for the system.
