Follow-up Investigation of 11 Pulsars Discovered in the Commensal Radio Astronomy FAST Survey
Year: 2025
Type: article
Abstract: In this paper, we study 11 pulsars that were discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in the Commensal Radio Astronomy FAST Survey. We report their phase-connected timing ephemeris, polarization pulse profiles, and Faraday rotation measures. The timing analysis shows that our sample includes seven normal pulsars and four (PSRs J0245+3219, J1437+3049, J1759−1248, and J1813−0852) millisecond pulsars, with periods ranging from 3.15 ms to 2.54 s, characteristic ages from 5.48 × 105 to 1.06 × 1010 yr, and surface magnetic fields from 1.46 × 108 to 1.18 × 1013 G. Six normal pulsars exhibit rich radiation characteristics, including nulling and subpulse drifting. PSR J0245+3219 (30.93 ms) has a spin period, characteristic age, surface magnetic field, and galactic height that are consistent with the parameters of disrupted recycled pulsars. PSR J1813−0852 (4.23 ms) is in a binary system with an orbit of 83.47 days, an eccentricity of 2.9 × 10−4, and its companion has a mass ranging from 0.28 to 0.76 M ⊙. PSR J1813−0852 exhibits a spin period, companion mass, and orbital eccentricity that align well with the predicted characteristics of a millisecond pulsar–helium white dwarf systems.
Source: The Astrophysical Journal
Authors: K. Yang, L. Li, J. P. Yuan, N. Wang, D. Li, P. Wang, C. C. Miao, W. W. Zhu, M. Y. Xue, W. M. Yan, J. B. Wang, R. Yuen, G. L. Lü, C. H. Zhu, J. M. Yao, Q. D. Wu, S. Q. Wang, S. N. Sun, F. F. Kou, D. Zhao, Z. Wang, J. Xu, C. Sun, Y. Feng, Z. J. Liu, X. L. Miao, L. Q. Meng, C. H. Niu, J. R. Niu, L. Qian, X. Y. Xie, Y. F. Xiao, Y. L. Yue, S. P. You, S. J. Dang, X. H. Yu, R. S. Zhao, X. Zhou, L. Zhang, J. F. Wu, C. J. Wang, Y. B. Wang, Z. Y. Gan
Institutions: Chinese Academy of Sciences, Xinjiang Astronomical Observatory, Xinjiang University, Zhejiang Lab, National Astronomical Observatories, Tsinghua University, Beijing Normal University, Lishui University, Guizhou Normal University, Central China Normal University, Guizhou University, Tencent (China)
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,499
Funders: National Natural Science Foundation of China, Chinese Academy of Sciences, Youth Innovation Promotion Association of the Chinese Academy of Sciences, Natural Science Foundation of Xinjiang, National Key Research and Development Program of China, National Astronomical Observatories, Chinese Academy of Sciences
OpenAlex ID: W4414622399