Gravity Tests with Radio Pulsars in Perturbative and Nonperturbative Regimes
Abstract
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.
Keywords
Cite
@article{arxiv.2208.00142,
title = {Gravity Tests with Radio Pulsars in Perturbative and Nonperturbative Regimes},
author = {Lijing Shao},
journal= {arXiv preprint arXiv:2208.00142},
year = {2023}
}
Comments
5 pages, 1 figure; Presented at the Ninth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, May 17-26, 2022