论文标题
共鸣，黑洞模仿和温室效应：重力波物理的后果
Resonances, black hole mimickers and the greenhouse effect: consequences for gravitational-wave physics
论文作者
论文摘要
众所周知，具有光敏物体的超整形物体可以模仿黑洞的许多观察特征。已经提出，重力波信号中异常的潮汐加热或存在共振将是表面或不存在地平线的明显烙印。这些主张和研究都基于频域分析，假设存在平稳性。在这里，我们表明该物体需要首先“加油”，直到达到固定型为止。实际上，物体内部存在稳定的光环和大型光线时，可能会极大地延迟“充电”，并有效地有助于结构的排放。换句话说，黑洞模仿比以前想象的更有效地表现为黑洞。我们的结果对具有鲜明共振的其他共振系统具有影响，包括绕着黑洞旋转的“漂浮轨道”。对此类系统的自我训练的适当考虑似乎是强制性的，并且将在Horizon Physics测试中有重要的应用。
Ultracompact objects with photonspheres are known to mimic many observational features of black holes. It has been suggested that anomalous tidal heating or the presence of resonances in gravitational wave signals would be a clear imprint of a surface or absence of a horizon. Such claims and studies are all based on a frequency-domain analysis, assuming stationarity. Here we show that the object needs to first "fuel-up" until it reaches the stationary regime. The presence of a stable light ring and large light-travel times inside the object may in fact delay enormously the "charging-up" and effectively contribute to the effacement of structure. In other words, black hole mimickers behave as black holes more efficiently than previously thought. Our results have implications for other resonant systems with sharp resonances, including "floating orbits" around spinning black holes. A proper accounting of the self-force for such systems seems to be both mandatory, and would have important applications for tests of horizon physics.
