论文标题
出色的复兴和重复的耀斑在深深的潮汐破坏事件中
Stellar Revival and Repeated Flares in Deeply Plunging Tidal Disruption Events
论文作者
论文摘要
带有潮汐半径$ r _ {\ rm t} $的潮汐破坏事件和围端距离$ r _ {\ rm p} $的特征是数量$β= r _ {\ rm t}/rm t}/r _ {\ rm p} $，以及“ deep coentters” $β\ g g。已经假设存在一个关键的$β\等效的β_ {\ rm c} \ sim 1 $，它区分了部分和充分的破坏：对于$β<β_ {\ rm c} $，一小部分的恒星与黑洞的潮汐相互作用，而全部与$ bhole as coble and is coply Is and restion use coply and coply as Starper and Starper carter” $ c。相遇应该已经满。在这里，我们在这里表明，通过提供$β= 16 $的示例在$γ= 5/3 $，类似于太阳能的多元与$ 10^6 m _ {\ odot} $ Black Hole之间相遇的示例是不正确的原始恒星质量的25％。我们建议在自我重力下的核心改革，这仍然很重要，因为气体的压缩均附近，在围绕轨道平面上发生压缩，并且在围绕周围的情况下，压缩在平面内。我们发现，围绕黑洞的界限上的核心形成，我们在最近观察到的重复核瞬变的背景下讨论了我们发现的相应含义。
Tidal disruption events with tidal radius $r_{\rm t}$ and pericenter distance $r_{\rm p}$ are characterized by the quantity $β= r_{\rm t}/r_{\rm p}$, and "deep encounters" have $β\gg 1$. It has been assumed that there is a critical $β\equiv β_{\rm c} \sim 1$ that differentiates between partial and full disruption: for $β< β_{\rm c}$ a fraction of the star survives the tidal interaction with the black hole, while for $β> β_{\rm c}$ the star is completely destroyed, and hence all deep encounters should be full. Here we show that this assumption is incorrect by providing an example of a $β= 16$ encounter between a $γ= 5/3$, solar-like polytrope and a $10^6 M_{\odot}$ black hole -- for which previous investigations have found $β_{\rm c} \simeq 0.9$ -- that results in the reformation of a stellar core post-disruption that comprises approximately 25\% of the original stellar mass. We propose that the core reforms under self-gravity, which remains important because of the compression of the gas both near pericenter, where the compression occurs out of the orbital plane, and substantially after pericenter, where compression is within the plane. We find that the core forms on a bound orbit about the black hole, and we discuss the corresponding implications of our findings in the context of recently observed, repeating nuclear transients.
