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arXiv 1602.00655astro-ph.HE
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来自三颗非常毫秒脉冲星的普通X射线:PSR J0337 +1715,J0636 +5129和J0645 +5158的XMM-牛顿观测

Ordinary X-rays from Three Extraordinary Millisecond Pulsars: XMM-Newton Observations of PSRs J0337+1715, J0636+5129, and J0645+5158

Renée Spiewak, David L. Kaplan, Anne Archibald, Peter Gentile, Jason Hessels, Duncan Lorimer, Ryan Lynch, Maura McLaughlin, Scott Ransom, Ingrid Stairs, Kevin Stovall

摘要:

我们介绍了最近发现的三个具有有趣特征的毫秒双星(MSP)的首次X射线观测结果:PSR J 0337 +1715,PSR J 0636 +5129和PSR J 0645 +5158。PSR J 0337 +1715是一颗快速旋转、明亮且迄今为止唯一的MSP,位于一个有两颗白矮星(WD)伴星的三级系统中。PSR J 0636 +5129是一颗MSP,在一个非常紧密的96分钟轨道上,有一颗低质量的8 $M_J$伴星。PSR J 0645 +5158是一个邻近的隔离MSP,占空比非常小(1-2%),这使得它被纳入高精度脉冲星计时计划中。使用XMM-牛顿的数据,我们分析了这三个物体的X射线光谱,以及PSR J 0337 +1715的光学/紫外光度学。就热发射和非热发射的比率而言,每个的X射线数据与大多数MSP的预期基本一致。我们讨论了这些数据对脉冲星人口的影响,以及对这些脉冲星未来观测的前景。

英文摘要:

We present the first X-ray observations of three recently discovered millisecond pulsars (MSPs) with interesting characteristics: PSR J0337+1715, PSR J0636+5129, and PSR J0645+5158. PSR J0337+1715 is a fast-spinning, bright, and so-far unique MSP in a hierarchical triple system with two white dwarf (WD) companions. PSR J0636+5129 is a MSP in a very tight 96-min orbit with a low-mass, 8 $M_J$ companion. PSR J0645+5158 is a nearby, isolated MSP with a very small duty cycle (1-2%), which has led to its inclusion in high-precision pulsar timing programs. Using data from XMM-Newton, we have analyzed X-ray spectroscopy for these three objects, as well as optical/ultraviolet photometry for PSR J0337+1715. The X-ray data for each are largely consistent with expectations for most MSPs with regards to the ratios of thermal and non-thermal emission. We discuss the implications of these data on the pulsar population, and prospects for future observations of these pulsars.

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