arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.13606astro-ph.HE
收藏

4U 1728-34中中子星的X射线准周期振荡及其质量和自旋的估算

X-ray quasi-periodic oscillations and estimates of the mass and the spin of the neutron star in 4U 1728-34

Ivan Zh. Stefanov

摘要:

4 U 1728-34的X射线光谱的三个平均光变曲线包含准周期振荡的三元组:两kHz,一个上限和一个下限,以及一个低频。本文在假设中子星和中子星同时出现的条件下,应用相对论性进动模型,计算了环礁源4U 1728-34中中子星的质量和自旋。质量和自旋的三个独立的估计的一致性也进行了测试。根据所得结果,所研究的中子星具有相对较高的质量和中等的自旋。

英文摘要:

Three of the averaged light curves from the X-ray spectrum of 4U 1728-34 contain triads of quasi-periodic oscillations: two kHz, an upper and a lower one, and one low-frequency. In the present work, with the assumption that the triads occur simultaneously and with the application of the relativistic precession model the mass and the spin of the neutron star in the atoll source 4U 1728-34 is obtained. The consistency of the three independent estimates of the mass and the spin is also tested. According to the obtained results, the studied neutron star has relatively high mass and moderate spin.

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。

↑