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arXiv 2103.14800astro-ph.HE
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用快速J183920探测中极激变变星群的范围。1 -045350

Probing the reach of the Intermediate Polar Cataclysmic Variable Population with Swift J183920.1-045350

Nicholas M. Gorgone, Patrick A. Woudt, David Buckley, Koji Mukai, Chryssa Kouveliotou, Ersin Gogus, Eric Bellm, Justin D. Linford, Alexander J. van der Horst, M… 展开作者

Nicholas M. Gorgone, Patrick A. Woudt, David Buckley, Koji Mukai, Chryssa Kouveliotou, Ersin Gogus, Eric Bellm, Justin D. Linford, Alexander J. van der Horst, Matthew G. Baring, Dieter Hartmann, Paul Barrett, Bradley Cenko, Melissa Graham, Johnathan Granot, Fiona Harrison, Jamie Kennea, Brendan M. O'Connor, Stephen Potter, Daniel Stern, Ralph Wijers

摘要:

我们报告的雨燕/XRT深银道面调查发现和多波长的后续观测的一个新的中间极激变变量,斯威夫特J183920.1-045350。在Xmm-牛顿和NuSTAR数据中发现了449.7 s的自旋周期,伴随着459.9 s的光学周期,这很可能是从5.6 h的轨道周期产生的会合周期或拍周期。在ZTF和SAAO的独立长基线光学测光观测中,轨道周期具有中等意义。我们发现,源X射线脉冲分数随能量的增加而减少。的X-射线光谱是一致的存在下的Fe发射线复杂的本地和星际吸收。在光学光谱中,观察到强的H $α$、H I、He I和He II发射线,这些都是磁性CV的共同特征。因此,源的属性是典型的已知的中间极性,除了它的估计距离为2.26 $^{+1.93}_{-0.83}$千秒差距,这是大于典型的,扩大了我们的银河系的CV人口的范围。

英文摘要:

We report on the Swift/XRT Deep Galactic Plane Survey discovery and multi-wavelength follow-up observations of a new intermediate polar Cataclysmic Variable, Swift J183920.1-045350. A 449.7 s spin period is found in Xmm-Newton and NuSTAR data, accompanied by a 459.9 s optical period that is most likely the synodic, or beat period, produced from a 5.6 h orbital period. The orbital period is seen with moderate significance in independent long-baseline optical photometry observations with ZTF and SAAO. We find that the source X-ray pulsed fraction decreases with increasing energy. The X-ray spectra are consistent with the presence of an Fe emission line complex with both local and interstellar absorption. In the optical spectra, strong H$α$, H I, He I and He II emission lines are observed, all common features in magnetic CVs. The source properties are thus typical of known intermediate polars, with the exception of its estimated distance of 2.26$^{+1.93}_{-0.83}$ kpc, which is larger than typical, extending the reach of the CV population in our Galaxy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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