• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Astrophysical journal >CORRELATED X-RAY AND OPTICAL VARIABILITY IN V404 CYGNI IN QUIESCENCE
【24h】

CORRELATED X-RAY AND OPTICAL VARIABILITY IN V404 CYGNI IN QUIESCENCE

机译：V404 CYGNI患者静息时的相关X射线和光学变异性

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

We report simultaneous X-ray and optical observations of V404 Cyg in quiescence. The X-ray flux varied dramatically by a factor of approx> 20 during a 60 ks observation. X-ray variations were well correlated with those in Ha, although the latter include an approximately constant component as well. Correlations can also be seen with the optical continuum, although these are less clear. We see no large lag between X-ray and optical line variations; this implies they are causally connected on short timescales. As in previous observations, Ha flares exhibit a double-peaked profile suggesting emission distributed across the accretion disk. The peak separation is consistent with material extending outward to at least the circularization radius. The prompt response in the entire Ha line confirms that the variability is powered by X-ray (and/or EUV) irradiation.
机译：我们报告静止期同时X射线和V404 Cyg的光学观察。在60 ks的观察过程中，X射线通量变化很大，约为20倍。 X射线的变化与Ha中的X射线变化具有很好的相关性，尽管后者也包括近似恒定的分量。尽管还不太清楚，但也可以看到与光学连续体的相关性。我们看不到X射线和光学线的变化之间有很大的滞后。这意味着它们在短时间内有因果关系。与以前的观察一样，Ha耀斑呈现双峰分布，表明发射分布在整个吸积盘上。峰分离与向外延伸至至少圆化半径的材料一致。整个Ha线中的迅速响应确认了变异性是由X射线（和/或EUV）照射提供动力的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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