“填鸭式”喂养AGN
"Spoon-feeding" an AGN
摘要：
当一颗恒星太靠近一个巨大的黑洞时，就会发生潮汐破裂事件（TDEs）。如果恒星的轨道刚好在潮汐半径之外，则会发生一个不那么戏剧性的事件，导致质量的轻微剥离。因此，如果一颗恒星在这些束缚偏心轨道中的一个轨道上围绕中心黑洞运行，那么在每个轨道周期都会发生较弱的爆发。由于五个雨燕观测，我们观察到最近的耀斑（92 Mpc）星系IC 3599，其中可能的TDE已经在1990年12月在Rosat全天巡天期间观察到。通过光变曲线模型和光谱拟合，我们将所有这些事件解释为一颗恒星进入9.5年高偏心率束缚轨道的非破坏性潮汐剥离。这是第一个周期性部分潮汐扰动的例子，可能是对中心黑洞的一勺喂养。
英文摘要：
Tidal disruption events (TDEs) occur when a star, passing too close to a massive black hole, is ripped apart by tidal forces. A less dramatic event occurs if the star orbits just outside the tidal radius, resulting in a mild stripping of mass. Thus, if a star orbits a central black hole on one of these bound eccentric orbits, weaker outbursts will occur recurring every orbital period. Thanks to five Swift observations, we observed a recent flare from the close by (92 Mpc) galaxy IC 3599, where a possible TDE was already observed in December 1990 during the Rosat All-Sky Survey. By light curve modeling and spectral fitting, we account for all these events as the non-disruptive tidal stripping of a single star into a 9.5 yr highly eccentric bound orbit. This is the first example of periodic partial tidal disruptions, possibly spoon-feeding the central black hole.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
