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Zhao, D.; Wang, N.; Yuan, J. P.; Li, D.; Wang, P.; Xue, M. Y.; Zhu, W. W.; Miao, C. C.; Yan, W. M.; Wang, J. B.; Yao, J. M.; Wu, Q. D.; Wang, S. Q.; Sun, S. N.; Kou, F. F.; Chen, Y. T.; Dang, S. J.; Feng, Y.; Liu, Z. J.; Miao, X. L.; Meng, L. Q.; Yuan, M.; Niu, C. H.; Niu, J. R.; Qian, L.; Wang, S.; Xie, X. Y.; Xiao, Y. F.; Yue, Y. L.; You, S. P.; Yu, X. H.; Zhao, R. S.; Yuen, R.; Zhou, X.; Zhang, L.; Wang, Y. B.; Wu, J. F.; Gan, Z. Y.; Sun, Z. Y.; Wang, C. J.
Astrophysical journal. Letters, 03/2024, Letnik: 964, Številka: 1Journal Article
Abstract We report the timing analysis of PSR J1846−0513, a pulsar discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in Commensal Radio Astronomy FAST Survey. The pulsar possesses a spin period of 23.36 ms and a spin-down rate ( P ̇ ) of 1.0106(3) × 10 −18 s s −1 , and it is located in an eccentric orbit ( e ∼0.208) with an orbital period of 0.61 days. The characteristic age and surface magnetic field of the pulsar are found to be 366.62 Myr and 4.9178 × 10 9 G, respectively, indicating that it is a recycled pulsar. Using over two years of timing data, we measure the periastron advance ω ̇ = 0.8956(8) deg yr −1 . By assuming that this effect is purely relativistic, we have estimated the total mass M = 2.6287(35) M ⊙ and obtained an upper limit for the pulsar mass and a lower limit for the companion’s mass. Our results indicate that this is a double neutron star system.
