• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >Detection of large-scale X-ray bubbles in the Milky Way halo
【24h】

Detection of large-scale X-ray bubbles in the Milky Way halo

机译：在银河系中检测大规模X射线泡沫

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

The halo of the Milky Way provides a laboratory to study the properties of the shocked hot gas that is predicted by models of galaxy formation. There is observational evidence of energy injection into the halo from past activity in the nucleus of the Milky Way~(1-4); however, the origin of this energy (star formation or supermassive-black-hole activity) is uncertain, and the causal connection between nuclear structures and large-scale features has not been established unequivocally. Here we report soft-X-ray-emitting bubbles that extend approximately 14 kiloparsecs above and below the Galactic centre and include a structure in the southern sky analogous to the North Polar Spur. The sharp boundaries of these bubbles trace collisionless and non-radiative shocks, and corroborate the idea that the bubbles are not a remnant of a local supernova~(5)but part of a vast Galaxy-scale structure closely related to features seen in γ-rays~(6). Large energy injections from the Galactic centre~(7)are the most likely cause of both the γ-ray and X-ray bubbles. The latter have an estimated energy of around 10~(56)erg, which is sufficient to perturb the structure, energy content and chemical enrichment of the circumgalactic medium of the Milky Way.
机译：银河系的光环提供了一种实验室，以研究通过模型形成Galaxy地层的震动热气体的性质。在银河系中的过去的活性中，存在能量注射的能量注射的观察证据〜（1-4）;然而，这种能量（星形形成或超级分配 - 黑洞活动）的起源是不确定的，核结构与大规模特征之间的因果关系尚未明确建立。在这里，我们报告了软X射线发射气泡，延伸了大约14只千柱，在银河系中心上方和下方延伸，并包括南部天空中的结构，类似于北极刺激。这些气泡的尖锐边界跟踪了碰撞和非辐射的冲击，并证实了气泡不是局部超新星〜（5）的残余物，而是与γ-中所示的特征密切相关的巨大的星系规模结构的一部分。光线〜（6）。从银河系统〜（7）的大能注入是γ射线和X射线泡沫的最可能原因。后者的估计能量约为10〜（56）次ERG，这足以扰乱银河系的凸缘介质的结构，能量含量和化学富集。

著录项

  • 来源
    《Nature》 |2020年第7837期|227-231|共5页
  • 作者

    P Predehl; R A Sunyaev; W Becker; H Brunner; R Burenin; A Bykov; A Cherepashchuk; N Chugai; E Churazov; V Doroshenko; N Eismont; M Freyberg; M Gilfanov; F Haberl; I Khabibullin; R Krivonos; C Maitra; P Medvedev; A Merloni; K Nandra; V Nazarov; M Pavlinsky; G Ponti; J S Sanders; M Sasaki; S Sazonov; A W Strong; J Wilms;

  • 作者单位

    Max-Planck-Institut für Extraterrestrische Physik;

    Space Research Institute of the Russian Academy of Sciences|Max-Planck-Institut für Astrophysik;

    Max-Planck-Institut für Extraterrestrische Physik|Max-Planck-Institut für Radioastronomie;

    Max-Planck-Institut für Extraterrestrische Physik;

    Space Research Institute of the Russian Academy of Sciences;

    Ioffe Institute;

    M. V. Lomonosov Moscow State University P. K. Sternberg Astronomical Institute;

    Institute of Astronomy Russian Academy of Sciences;

    Space Research Institute of the Russian Academy of Sciences|Max-Planck-Institut für Astrophysik;

    Institut für Astronomie und Astrophysik;

    Space Research Institute of the Russian Academy of Sciences;

    Max-Planck-Institut für Extraterrestrische Physik;

    Space Research Institute of the Russian Academy of Sciences|Max-Planck-Institut für Astrophysik;

    Max-Planck-Institut für Extraterrestrische Physik;

    Space Research Institute of the Russian Academy of Sciences|Max-Planck-Institut für Astrophysik;

    Space Research Institute of the Russian Academy of Sciences;

    Max-Planck-Institut für Extraterrestrische Physik;

    Space Research Institute of the Russian Academy of Sciences;

    Max-Planck-Institut für Extraterrestrische Physik;

    Max-Planck-Institut für Extraterrestrische Physik;

    Space Research Institute of the Russian Academy of Sciences;

    Space Research Institute of the Russian Academy of Sciences;

    Max-Planck-Institut für Extraterrestrische Physik|INAF-Osservatorio Astronomico di Brera;

    Max-Planck-Institut für Extraterrestrische Physik;

    Dr. Karl-Remeis-Sternwarte Bamberg and Erlangen Centre for Astroparticle Physics Universität Erlangen-Nürnberg;

    Space Research Institute of the Russian Academy of Sciences;

    Max-Planck-Institut für Extraterrestrische Physik;

    Dr. Karl-Remeis-Sternwarte Bamberg and Erlangen Centre for Astroparticle Physics Universität Erlangen-Nürnberg;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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