标题： 用吸积黑洞的准周期振荡测试引力：爱因斯坦-标量-高斯-博恩理论的情况 显示英文标题

标题： Testing Gravity with Quasi Periodic Oscillations from accreting Black Holes: the Case of Einstein-Dilaton-Gauss-Bonnet Theory

摘要： 在吸积黑洞发出的X射线流量中观测到的准周期振荡（QPOs），与事件视界附近的现象有关。 未来的大型面积X射线仪器将能够以极高的精度测量QPO频率，从而探测这一强场区域。 通过使用相对论进动模型，我们展示了QPO频率如何用于在强场区域对广义相对论与其他预测偏离经典理论的引力替代理论进行检验。 我们考虑了广义相对论中最受支持的强曲率修正之一，即爱因斯坦-标量-高斯-博内理论，并表明如果LOFT任务（欧洲空间局M级任务）以预期的灵敏度检测到QPOs，这将对该理论的参数空间设置最严格的限制。 显示英文摘要

摘要： Quasi-Periodic Oscillations (QPOs) observed in the X-ray flux emitted by accreting black holes, are associated to phenomena occurring near the horizon. Future very large area X-ray instruments will be able to measure QPO frequencies with very high precision, thus probing this strong-field region. By using the relativistic precession model, we show the way in which QPO frequencies could be used to test general relativity against those alternative theories of gravity which predict deviations from the classical theory in the strong-field regime. We consider one of the best motivated strong-curvature corrections to general relativity, namely the Einstein-Dilaton-Gauss-Bonnet theory, and show that a detection of QPOs with the expected sensitivity of the proposed ESA M-class mission LOFT would set the most stringent constraints on the parameter space of this theory.