Author(s): Z. L. Yang, J. L. Han, W. Q. Su, P. F. Wang, C. Wang, T. Wang, D. J. Zhou, Yi Yan, J. Xu, W. C. Jing, N. N. Cai, R. X. Xu, H. G. Wang, and X. P. You The observation of a binary pulsar system characterized by low neutron star masses with short orbital period enables tests of relativity, and may enable a measurement of Lens-Thirring precession with future observations. [Phys. Rev. Lett. 137, 121401] Published Tue Sep 15, 2026