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宇宙正午类星体中的相对论性内流候选体

A relativistic inflow candidate in a quasar at cosmic noon

Yerong Xu, Xiurui Zhao, Elena Bertola, Valentina Braito, Francesca Civano, Luca Comisso, Luigi Gallo, Vittoria E. Gianolli, Elias Kammoun, Giorgio Lanzuisi, Stefano Marchesi, Mar Mezcua, Ciro Pinto, James N. Reeves, Daniele Rogantini, Núria Torres-Albà, Lizhong Zhang

arXiv 2610.10267首次发表:更新:

发表机构

Institute of Space Sciences (ICE, CSIC); Institut d’Estudis Espacials de Catalunya (IEEC); California Institute of Technology; The Catholic University of America; INAF-Osservatorio Astronomico di Brera; Università di Trento; NASA Goddard Space Flight Center; Columbia University; Saint Mary’s University; Clemson University(空间科学研究所(ICE, CSIC); 加泰罗尼亚空间研究学院(IEEC); 加州理工学院; 美国天主教大学; 意大利国家天体物理研究所-布雷拉天文台; 特伦托大学; NASA戈达德太空飞行中心; 哥伦比亚大学; 圣玛丽大学; 克莱姆森大学)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

该研究在宇宙正午类星体WISEA J094835.95+432302.6的XMM-Newton光谱中发现两个高置信度吸收特征,可能源于视速度0.37c的超快内流,为黑洞峰值吸积研究提供罕见样本。

AI 中文摘要

宇宙正午($z\sim2$)标志着宇宙恒星形成和黑洞吸积活动的峰值时期,此时预计存在强烈的吸积和外流。我们报告了在类星体 WISEA~J094835.95+432302.6(红移 $z=1.893$)的 \textit{XMM-Newton} 光谱中探测到两个候选吸收特征。两个红移特征出现在静止系能量约 $\sim4.65$ 和 $\sim5.75$ keV 处,置信度分别为 99.3% 和 94.1%,该置信度通过考虑 look-elsewhere 效应的蒙特卡洛(MC)模拟估算。这些特征可解释为来自一个视速度 $0.37^{+0.02}_{-0.01}c$ 的超快内流(UFI)的 Fe XXV/XXVI K 壳层跃迁。若后续 \textit{XMM-Newton} 观测证实,这些探测将把已报告的 UFI 候选体从本地宇宙扩展到宇宙正午,为黑洞在其增长峰值期的吸积提供罕见的实验场所。

英文摘要

Cosmic noon ($z\sim2$) marks the peak epoch of cosmic star formation and black hole accretion activity, where strong accretion and outflows are expected. We report two candidate absorption features in the \textit{XMM-Newton} spectrum of the quasar WISEA~J094835.95+432302.6 at $z=1.893$. Two redshifted features occur at rest-frame energies of $\sim4.65$ and $\sim5.75$keV with confidence levels of 99.3% and 94.1%, respectively, estimated from Monte Carlo (MC) simulations considering the look-elsewhere effect. These features can be explained by the Fe XXV/XXVI K-shell transitions from one ultra-fast inflow (UFI) with an apparent velocity of $0.37^{+0.02}_{-0.01}c$. If confirmed by follow-up \textit{XMM-Newton} observations, these detections would extend reported UFI candidates from the local Universe to cosmic noon, offering a rare laboratory for black hole accretion at the peak of their growth.

Comments6 pages, 7 figures, 1 table, submitted

论文原文

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