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The discovery of three pulsars in the globular cluster M15 with the FAST

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arxiv 2312.06067 v2 pith:7S5NGINF submitted 2023-12-11 astro-ph.HE astro-ph.GA

Yuxiao Wu , Zhichen Pan , Lei Qian , Scott Ransom , Ralph Eatough , BoJun Wang , Paulo Freire , Kuo Liu
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Zhen Yan Jintao Luo Liyun Zhang Minghui Li Dejiang Yin Baoda Li Yifeng Li Yinfeng Dai Yaowei Li Xinnan Zhang Tong Liu Yu Pan
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We present the discovery of three pulsars in the Globular Cluster (GC) M15 (NGC 7078) by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). PSR J2129+1210J (M15J) is a millisecond pulsar with a spin period of 11.84 ms and a dispersion measure of 66.68 pc cm-3. Both PSR J2129+1210K and L (M15K and L) are long-period pulsars with spin periods of 1928 ms and 3961 ms, respectively. M15L is the GC pulsar with the longest spin period known. The timing solutions of M15A to M15H are updated. As predicted by Ridolfi et al.(2018), the flux density of M15C keeps decreasing and the latest detection in our dataset was on December 20th, 2022. We have also detected M15I's signal for the first time since its discovery. Current timing suggests that it is an isolated pulsar.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Detecting Intermediate-mass Black Holes Using Miniature Pulsar Timing Arrays in Globular Clusters

    astro-ph.HE 2025-07 conditional novelty 6.0 of 10

    A mini pulsar timing array inside a globular cluster could detect intermediate-mass black hole binaries with mass ratios above about 0.1 via microsecond gravitational-wave timing residuals.

  2. Pulsars in Globular Clusters With the SKAO

    astro-ph.HE 2026-07 conditional novelty 3.0 of 10

    SKA-MID and SKA-LOW are predicted to discover 150–1700 new pulsars in Galactic globular clusters, more than doubling the current population of 345.

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