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首页> 外文期刊>The Astrophysical journal >Periodic Optical Outbursts from the Be-Neutron Star Binary AX J0049.4?7323*
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Periodic Optical Outbursts from the Be-Neutron Star Binary AX J0049.4?7323*

机译:Be-Neutron Star Binary AX J0049.4?7323 *的周期性光学爆发

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摘要

The optical light curve of the Be–neutron star binary AX J0049.4-7323 has been investigated using data from the MACHO and OGLE-II projects. This X-ray source, whose neutron star has a very slow rotation rate (Ppulse = 755.5 s), shows optical outbursts every ~394 days. The regularity of these outbursts suggests that their recurrence time is the orbital period of the system. During the outbursts, the system brightens and becomes slightly redder. A possible interpretation is that a portion of the equatorial disk is excited as the neutron star passes through it during periastron passage. In the intervals between outbursts, the light curve shows ~11 day quasi-periodic variability, which may be associated with the rotation of the Be star's extended disk.
机译:已经使用来自MACHO和OGLE-II项目的数据研究了Be-中子星双星AX J0049.4-7323的光学曲线。该X射线源的中子星旋转速度非常慢(脉冲= 755.5 s),每394天就会出现一次光学爆发。这些爆发的规律性表明它们的复发时间是系统的轨道周期。在爆发期间,系统变亮并变红。一种可能的解释是,中子星在围星过程中通过时,赤道盘的一部分会受到激发。在爆发之间的间隔中,光曲线显示约11天的准周期性变化,这可能与Be star扩展盘的旋转有关。

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