黑洞喷射在宇宙网络的规模上
Martijn S S L Oei1,2, Martin J Hardcastle3, Roland Timmerman4,5
1Leiden Observatory, Leiden University, Leiden, The Netherlands. oei@caltech.edu.
Nature
|September 18, 2024
概括
现在可以观测到超大质量黑洞喷流延伸到7Mpc, 挑战以前的尺寸限制. 这些强大的宇宙结构在广的距离和早期宇宙时代表现出了惊人的稳定性.
科学领域:
- 宇宙结构的形成
- 天体物理学
- 无线电天文学
背景情况:
- 来自超大质量黑洞 (SMBH) 的高功率喷射形成了宇宙中最大的星系制造结构.
- 这些喷射将能量和物质注入银河间介质 (IGM),影响宇宙网络的演变.
- 之前的观察表明喷气的最大长度大约为5 Mpc,这意味着增长的极限.
研究的目的:
- 报告一个比以前已知的黑洞喷射对大得多的无线电结构的观察.
- 调查喷气在宇宙距离上的连贯性.
- 探索早期更密集的宇宙中喷射传播的影响.
主要方法:
- 大规模无线电结构的无线电观测.
- 对结构形态的分析,包括叶片,喷气和热点.
- 观测的大小与宇宙空隙半径和理论模型的比较.
主要成果:
- 发现一个覆盖大约7Mpc的无线电结构,
- 这个结构是由早期宇宙中的黑洞生成的 (大爆炸后的6.3 Gyr之间).
- 尽管早期宇宙环境较为密集,但观测到的喷射在宇宙距离上保持了连贯性.
结论:
- 超大质量黑洞喷流可以增长到超过5Mpc的尺寸, 挑战已有的增长限制.
- 这些喷气体在广的宇宙尺度上表现出对磁动力学不稳定的弹性.
- 在早期宇宙中实现这种长期喷射相干的机制仍然是一个开放的问题.
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