...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >X-ray variability with spectral state transitions in NS-LMXBs observed with MAXI/GSC and Swift/BAT
【24h】

X-ray variability with spectral state transitions in NS-LMXBs observed with MAXI/GSC and Swift/BAT

机译：用MAXI / GSC和Swift / BAT观察到的NS-LMXB的X射线可变性与光谱状态的转变

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

X-ray variabilities with spectral state transitions in bright low-mass X-ray binaries containing a neutron star are investigated by using the one-day bin light curves of MAXI/GSC (Gas Slit Camera) and Swift/BAT (Burst Alert Telescope). Four sources (4U 1636-536, 4U 1705-44, 4U 1608-52, and GS 1826-238) exhibited small-amplitude X-ray variabilities with spectral state transitions. Such "mini-outbursts" were characterized by smaller amplitudes (several times) and shorter duration (less than several tens of days) than those of "normal outbursts." A theoretical model of disk instability by Mineshige and Osaki (PASJ, 37, 1, 1985) predicts both large-amplitude outbursts and small-amplitude variabilities. We interpret the normal outbursts as the former prediction of this model, and the mini-outbursts as the latter. Here, we can also call the mini-outburst a "purr-type outburst" referring to the theoretical work. We suggest that similar variabilities lasting for several tens of days without spectral state transitions, which are often observed in the hard state, may be repeats of mini-outbursts.
机译：通过使用MAXI / GSC（气体狭缝相机）和Swift / BAT（爆炸警报望远镜）的单日仓光曲线，研究了包含中子星的明亮低质量X射线双星中具有光谱状态转变的X射线变异性。 。四个源（4U 1636-536、4U 1705-44、4U 1608-52和GS 1826-238）表现出具有光谱态跃迁的小振幅X射线变异性。与“正常爆发”相比，这种“微小爆发”的幅度较小（几次），持续时间较短（少于几十天）。 Mineshige和Osaki（PASJ，37，1，1985）的磁盘不稳定性理论模型可以预测大振幅爆发和小振幅变化。我们将正常爆发解释为该模型的前一个预测，将小型爆发解释为后者。在这里，我们也可以称其为理论性工作的“爆发型爆发”。我们建议，类似的变化持续几十天而没有频谱状态转换（通常在硬状态下观察到），可能是小爆发的重复。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号