Monthly quasi-periodic eruptions from repeated stellar disruption by a massive black hole
Monthly quasi-periodic eruptions from repeated stellar disruption by a massive black hole
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DOI：
10.1038/s41550-023-02073-y
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发表时间：
2023-09
期刊：
影响因子：
14.1
通讯作者：
P. A. Evans;C. Nixon;S. Campana;P. Charalampopoulos;D. Perley;A. Breeveld;K. L. Page;S. Oates;R. Eyles-Ferris;D. Malesani;L. Izzo;M. Goad;P. T. O'Brien;J. Osborne;B. S. U. O. Leicester;U. Leeds;I. Brera;U. Turku;Dtu Space;Liverpool John Moores University;Mullard Space Science Laboratory;U. Birmingham;R. University;Dawn;U. Copenhagen;Inaf OaC
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文献类型：
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作者：
P. A. Evans;C. Nixon;S. Campana;P. Charalampopoulos;D. Perley;A. Breeveld;K. L. Page;S. Oates;R. Eyles-Ferris;D. Malesani;L. Izzo;M. Goad;P. T. O'Brien;J. Osborne;B. S. U. O. Leicester;U. Leeds;I. Brera;U. Turku;Dtu Space;Liverpool John Moores University;Mullard Space Science Laboratory;U. Birmingham;R. University;Dawn;U. Copenhagen;Inaf OaC
近年来，对档案x射线数据的搜索显示，星系表现出周期为几小时的核准周期性爆发。这让人联想到超大质量黑洞对恒星的潮汐破坏。在一个~105M⊙黑洞周围的偏心轨道上，白矮星重复的部分剥离提供了一个有吸引力的模型。最近在光学上发现了另一类具有更长的时间尺度的周期核瞬变，它可能是由~107M⊙黑洞对主序星的部分剥离引起的。这些类别之间没有明确的联系。我们提出了一个x射线核瞬变的发现，它显示出以周为周期的准周期爆发。我们讨论了排放的可能来源，并提出该系统连接了上述两个现有类别。这一发现是通过快速识别、传播和跟踪新的实时Swift-XRT瞬变探测器发现的x射线瞬变而成为可能的，这证明了低延迟、敏感搜索x射线瞬变的重要性。
In recent years, searches of archival X-ray data have revealed galaxies exhibiting nuclear quasi-periodic eruptions with periods of several hours. These are reminiscent of the tidal disruption of a star by a supermassive black hole. The repeated, partial stripping of a white dwarf in an eccentric orbit around an ~105M⊙black hole provides an attractive model. A separate class of periodic nuclear transients, with much longer timescales, have recently been discovered optically and may arise from the partial stripping of a main-sequence star by an ~107M⊙black hole. No clear connection between these classes has been made. We present the discovery of an X-ray nuclear transient that shows quasi-periodic outbursts with a period of weeks. We discuss possible origins for the emission and propose that this system bridges the two existing classes outlined above. This discovery was made possible by the rapid identification, dissemination and follow-up of an X-ray transient found by the new live Swift-XRT transient detector, demonstrating the importance of low-latency, sensitive searches for X-ray transients.