来自黑洞积聚盘的风驱动着活跃星系中的分子外流
F Tombesi1, M Meléndez2, S Veilleux3
11] X-ray Astrophysics Laboratory, NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA [2] Department of Astronomy and CRESST, University of Maryland, College Park, Maryland 20742, USA.
Nature
|March 27, 2015
概括
科学家在一个超发光星系中检测到强大的积聚盘风,证实了类星体反机制. 这一发现将超大质量黑洞活动与银河系进化联系起来,通过解释风如何灭恒星形成.
科学领域:
- * 天体物理学 * 天体物理学
- * 银河系进化演变 *
- * 黑洞物理 黑洞物理
背景情况:
- * 活跃的银河核 (AGN) 风被认为是调节银河系进化和超大质量黑洞增长的理论.
- * 超发光红外星系 (ULIRGs) 呈现出分子外流,支持类星体反假说.
- *以前的研究缺乏直接证据,将大规模的分子外流与ULIRG中的积累盘风联系起来.
研究的目的:
- * 检测和描述在ULIRG中一个已知分子外流的积累盘风.
- * 为拟议的类星反节能机制提供观测证据.
- *将AGN活动与整个银河系的现象联系起来,例如恒星形成火.
主要方法:
- * 附近的ULIRG IRAS F11119+3257.7的X射线光谱图
- *分析光谱数据以识别相对论风的特征.
- * 流出能量与类星体反理论模型的比较.
主要成果:
- * 在IRAS F11119+3257.7.中检测到强大的增积盘风,轻微相对论速度 (0.25c) 在IRAS F11119+3257.7.
- *IRAS F11119+3257中的AGN表现出类似类星体的亮度 (1.5 × 10^46 erg/s).
- * 检测到的积聚盘风和银河系的分子外流的能量与节能反机制一致.
结论:
- * 这项研究首次直接检测了在具有分子外流的ULIRG中增积盘风.
- * 这证实了AGN驱动的风在缺乏强大的射电喷射的星系的类星体反过程中的作用.
- *这些发现加强了超大质量黑洞活动与宿主星系恒星形成调节之间的联系.
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