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在恒星质量黑洞系统V404 Cygni中快速变化的喷气方向
James C A Miller-Jones1, Alexandra J Tetarenko2,3, Gregory R Sivakoff2
1International Centre for Radio Astronomy Research-Curtin University, Perth, Western Australia, Australia. james.miller-jones@curtin.edu.au.
Nature
|May 1, 2019
概括
在V404 Cygni中观察到的黑洞呈现出快速变化的相对论喷流. 这种喷气前行与薄增积盘中的Lense-Thirring效应有关,影响黑洞反.
科学领域:
- 天体物理学
- 黑洞物理
- 收缩磁盘动力学
背景情况:
- 增加的黑洞会发射强大的相对论喷射,
- 喷气动力学受到积累流的影响,有证据表明,由于恒星质量黑洞的框架拖动.
- 理论模型表明喷气可以产生扭矩积累流,但积累动力学和喷气发射之间的相互作用仍然不清楚.
研究的目的:
- 为了研究黑洞X射线双星V404Cygni喷射方向的快速变化.
- 了解积累盘动力学与相对论喷气行为之间的关系.
- 在喷气发射或重定向中探索Lense-Thirring precession的作用.
主要方法:
- 使用非常长基线干扰测量 (VLBI) 来观察V404天在2015年的爆发峰值.
- 分析了飞机方向的快速变化,
- 使用Lense-Thirring效应模拟观察到的喷气前行,应用于薄增积盘.
主要成果:
- 在V404天中检测到相对论喷气方向的快速变化.
- 他成功地将这种不断变化的喷气方向模拟为垂直延伸的薄盘的Lense-Thirring前置.
- 超级埃丁顿积累率被确定为细盘形成的原因.
结论:
- 在几百个引力半径内发射或重定向喷气时, 内部积累盘的动态起着至关重要的作用.
- 这种前行机制预计在任何强烈增长的黑洞中具有错误的旋转和流入的气体.
- 这种动态会影响喷射的观测特征,并促进更均的黑洞反分布.
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