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Updated: Jul 4, 2026

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Cryogenic Liquid Jets for High Repetition Rate Discovery Science
Published on: May 9, 2020
在爆发的矮星新星中,一个短暂的无线电喷射
Elmar Körding1, Michael Rupen, Christian Knigge
1School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, UK. elmar@phys.soton.ac.uk
概括
天文学家探测到来自矮星新星的第一个天体物理喷气,这是一种积聚的白矮星. 这一发现表明,磁盘/喷气合机制在所有收缩的天体中都是常见的.
科学领域:
- 天体物理学 天体物理学
- 恒星进化 恒星进化
- 等离子体物理学的物理学
背景情况:
- 天体物理喷射在各种积累物体中被观察到,包括超大质量黑洞和年轻恒星物体.
- 一个统一的磁盘/喷射合场景,主要基于X射线二进制系统,已被广泛接受.
- 灾难性变量,特别是矮星新星 (弱增白矮星),由于缺乏检测到的喷气,尽管与X射线二进制星相似的爆发行为,但被认为是例外.
研究的目的:
- 为了研究矮星新星中天体物理喷射的存在.
- 要确定在其他积累物体中观察到的盘/喷射合机制是否也存在于矮星新星中.
- 为了测试喷气生产是积累系统中无处不在的现象的假设.
主要方法:
- 在其爆发阶段对矮星新星进行了无线电观测.
- 分析了观察到的无线电辐射,以寻找标志着来自喷气式飞机的同步子辐射的特征.
- 将推断出的喷流 (功率,与爆发周期的关系) 的特性与在X射线二进制系统中观察到的特性进行了比较.
主要成果:
- 在爆发过程中检测到来自矮星新星的可变平面频谱无线电辐射.
- 将无线电发射解释为来自短暂喷气,与同步子发射相一致.
- 发现推断出的喷气功率及其与爆发周期的关系与X射线二进制星系的相似.
结论:
- 在矮星新星中检测到喷气挑战了这些系统是喷气生产的例外的概念.
- 这些发现表明,磁盘/喷气合机制确实无处不在,在广泛的积累物体中运行.
- 这项研究统一了对不同天体物理环境中喷气形成的理解,从恒星质量物体到超大质量黑洞.
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