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arXiv 1507.02138astro-ph.HE
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吸积毫秒双星的磁场强度

The magnetic field strengths of accreting millisecond pulsars

Dipanjan Mukherjee, Peter Bult, Michiel van der Klis, Dipankar Bhattacharya

摘要:

在这项工作中,我们估计的上限和下限的磁偶极矩的强度与罗西X射线定时探测器(RXTE)观察到的所有14个吸积毫秒X射线双星。对于每个源,我们搜索了存档的RXTE数据,以获得最高和最低通量水平,并检测到显著的脉动。我们假设这些通量水平对应于通道吸积发生的吸积盘内边缘的最近和最远位置。通过估计吸积率从观测到的光度在这两个通量水平,我们放置上下限的中子星的磁偶极矩,使用标准磁层吸积理论的假设。最后,我们讨论了如何我们的场强估计可以进一步提高,因为更多的信息,这些historicars获得。

英文摘要:

In this work we have estimated upper and lower limits to the strength of the magnetic dipole moment of all 14 accreting millisecond X-ray pulsars observed with the Rossi X-ray Timing Explorer (RXTE). For each source we searched the archival RXTE data for the highest and lowest flux levels with a significant detection of pulsations. We assume these flux levels to correspond to the closest and farthest location of the inner edge of the accretion disk at which channelled accretion takes place. By estimating the accretion rate from the observed luminosity at these two flux levels, we place upper and lower limits on the magnetic dipole moment of the neutron star, using assumptions from standard magnetospheric accretion theory. Finally, we discuss how our field strength estimates can be further improved as more information on these pulsars is obtained.

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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