论文标题
LSI+61303中定期积聚次注射的证据
Evidence for periodic accretion-ejection in LSI+61303
论文作者
论文摘要
恒星二进制系统LS I +61303，由B0 VE恒星周围的偏心轨道中的紧凑物体组成，从无线电散发到伽马射线能量。无线电光谱指数，X射线和GEV伽马射线数据的轨道调制表明存在两个峰。这个两峰的轮廓符合积聚理论，该理论预测了沿26.5 d轨道的LS I +61303的两个积聚次注射事件。但是，现有的多波长数据不是同时发生的。在本文中，我们报告了沿一个单个轨道对系统的广播，X射线和伽马射线观察的广告系列的结果。我们的结果证实了沿轨道的两个预测事件，此外还表明，无线电和伽马射线峰的位置与X射线降低相吻合，这是X射线降低的X射线和伽马射线发射弹出的预期，从而耗尽了X射线发射积聚流。我们讨论了对LS I +61303中积分驱除物理过程进行系统研究的未来观察策略。
The stellar binary system LS I +61303, composed of a compact object in an eccentric orbit around a B0 Ve star, emits from radio up to gamma-ray energies. The orbital modulation of radio spectral index, X-ray, and GeV gamma-ray data suggests the presence of two peaks. This two-peaked profile is in line with the accretion theory predicting two accretion-ejection events for LS I +61303 along the 26.5 d orbit. However, the existing multiwavelength data are not simultaneous. In this paper, we report the results of a campaign covering radio, X-ray, and gamma-ray observations of the system along one single orbit. Our results confirm the two predicted events along the orbit and in addition show that the positions of radio and gamma-ray peaks are coincident with X-ray dips as expected for radio and gamma-ray emitting ejections depleting the X-ray emitting accretion flow. We discuss future observing strategies for a systematic study of the accretion-ejection physical processes in LS I +61303.
