标题： 引力测试中的射电脉冲星在微扰和非微扰区域 显示英文标题

标题： Gravity Tests with Radio Pulsars in Perturbative and Nonperturbative Regimes

摘要： 寻找爱因斯坦广义相对论（GR）之外的实证线索对于理解引力和时空至关重要。 自20世纪70年代以来，射电脉冲星在检验引力理论中一直发挥着重要作用。 由于双星脉冲星的射电计时对轨道动力学的变化非常敏感，因此可以捕捉或限制与GR预测的小偏差。 从这个意义上说，标准模型扩展中的引力部分通过一组脉冲星系统得到了严格的约束。 此外，在某些特定的替代引力理论中，像脉冲星这样的致密天体可能会出现非微扰偏差，因此射电脉冲星在强引力区域也提供了相当独特的检验平台。 显示英文摘要

摘要： Searches for empirical clues beyond Einstein's general relativity (GR) are crucial to understand gravitation and spacetime. Radio pulsars have been playing an important role in testing gravity theories since 1970s. Because radio timing of binary pulsars is very sensitive to changes in the orbital dynamics, small deviations from what GR predicts can be captured or constrained. In this sense, the gravity sector in the standard-model extension was constrained tightly with a set of pulsar systems. Moreover, compact objects like pulsars are possible to develop nonperturbative deviations from GR in some specific alternative gravity theories, thus radio pulsars also provide rather unique testbeds in the strong-gravity regime.