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X射线毫秒脉冲星中的528.6Hz的周期

2022-08-11 09:02:59  阅读:160  来源: 互联网

标签:Hz 528.6 MAXI X射线 J1816 over ray


X射线毫秒脉冲星中的528.6Hz的周期
arXiv:2208.04721 [pdfother]
The discovery of the 528.6 Hz accreting millisecond X-ray pulsar MAXI J1816-195Peter BultDiego AltamiranoZaven ArzoumanianDeepto ChakrabartyJérôme ChenevezElizabeth C. FerraraKeith C. GendreauSebastien GuillotTolga GüverWataru IwakiriGaurava K. JaisawalGiulio C. MancusoChristian MalacariaMason NgAndrea SannaTod E. StrohmayerZorawar WadiasinghMichael T. WolffComments: 8 pages, 3 figures, 2 tables. Accepted for publication in ApJ LettersSubjects: High Energy Astrophysical Phenomena (astro-ph.HE)

We present the discovery of 528.6 Hz pulsations in the new X-ray transient MAXI J1816-195. Using NICER, we observed the first recorded transient outburst from the neutron star low-mass X-ray binary MAXI J1816-195 over a period of 28 days. From a timing analysis of the 528.6 Hz pulsations, we find that the binary system is well described as a circular orbit with an orbital period of 4.8 hours and a projected semi-major axis of 0.26 light-seconds for the pulsar, which constrains the mass of the donor star to 0.10−0.55M⊙. Additionally, we observed 15 thermonuclear X-ray bursts showing a gradual evolution in morphology over time, and a recurrence time as short as 1.4 hours. We did not detect evidence for photospheric radius expansion, placing an upper limit on the source distance of 8.6 kpc.

来源: https://arxiv.org/list/astro-ph/new


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    标签:Hz,528.6,MAXI,X射线,J1816,over,ray
    来源: https://www.cnblogs.com/zouastro/p/16574660.html

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