标题： 对塞弗特星系NGC 4051的扩展XMM-Newton观测。 I. 激波外流的证据 显示英文标题

标题： An extended XMM-Newton observation of the Seyfert galaxy NGC 4051. I. Evidence for a shocked outflow

摘要： 一个对 Seyfert 1 星系 NGC 4051 的扩展 XMM-Newton 观测揭示了一个丰富的吸收线光谱，表明存在一个被光致电离的外流，具有广泛的速度范围和电离参数。在低连续谱流量下，发射线光谱有很好的定义，包含多个丰富金属离子的窄线和宽线成分。吸收线速度结构以及速度和电离参数之间的广泛相关性与一个高电离、高速风的外流情景一致，这种风可能在间歇性的超爱丁顿吸积期间被抛出，进入星际介质或之前的喷射物中，在由此产生的强激波中损失了大量动能。我们探讨了准恒定的软 X 射线发射成分可能是这种激波后冷却的证据。这种对 AGN 外流的重新认识与多次次要爱丁顿吸积事件相一致，这些事件创造了动量驱动的反馈，将黑洞和宿主星系的增长联系起来。 显示英文摘要

摘要： An extended XMM-Newton observation of the Seyfert 1 galaxy NGC 4051 has revealed a rich absorption line spectrum indicating the presence of a photoionized outflow with a wide range of velocities and ionization parameter. At low continuum fluxes an emission line spectrum is well defined with both narrow and broad components of several abundant metal ions. The absorption line velocity structure and a broad correlation of velocity and ionization parameter are consistent with an outflow scenario where a highly ionized, high velocity wind, perhaps launched during intermittent super-Eddington accretion, runs into the interstellar medium or previous ejecta, losing much of its kinetic energy in the resultant strong shock. We explore the possibility that a quasi-constant soft X-ray emission component may be evidence of this post-shock cooling. This revised view of AGN outflows is consistent with multiple minor Eddington accretion episodes creating a momentum-driven feedback linking black hole and host galaxy growth.