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FAST Globular Cluster Pulsar Survey: Twenty-Four Pulsars Discovered in Fifteen Globular Clusters

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arxiv 2106.08559 v1 pith:YRDKRNU5 submitted 2021-06-16 astro-ph.HE astro-ph.GA

Zhichen Pan , Lei Qian , Xiaoyun Ma , Kuo Liu , Lin Wang , Jintao Luo , Zhen Yan , Scott Ransom
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Duncan Lorimer Di Li Peng Jiang
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We present the discovery of 24 pulsars in 15 Globular Clusters (GCs) using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). These include the first pulsar discoveries in M2, M10, and M14. Most of the new systems are either confirmed or likely members of binary systems. M53C, NGC6517H and I are the only three pulsars confirmed to be isolated. M14A is a black widow pulsar with an orbital period of 5.5 hours and a minimum companion mass of 0.016 \Ms. M14E is an eclipsing binary pulsar with an orbital period of 20.3 hours. With the other 8 discoveries that have been reported elsewhere, in total 32 GC pulsars have been discovered by FAST so far. In addition, We detected M3A twice. This was enough to determine that it is a black widow pulsar with an orbital period of 3.3 hours and a minimum companion mass of 0.0125 \Ms.

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Cited by 4 Pith papers

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

  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.

  3. Exploring the Galactic plasma with pulsars in the SKA Era

    astro-ph.HE 2026-07 accept novelty 2.5 of 10

    Pulsars map Galactic, solar-wind, and ionospheric plasma via DM, RM, scintillation, and scattering; SKA-Low/Mid AA4 will push DM precision to ~10^{-8} pc cm^{-3} and transform IISM models.

  4. Exploring the Galactic plasma with pulsars in the SKA Era

    astro-ph.HE 2026-07 accept novelty 2.0 of 10

    Pulsars map Galactic, heliospheric and ionospheric plasma; SKA will deliver order-of-magnitude gains in DM/RM precision and scattering characterisation.

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