中国科学:物理学 力学 天文学(英文版)2024，Vol.67Issue(6) ：166-180.DOI:10.1007/s11433-023-2362-x

A discovery of two slow pulsars with FAST:"Ronin"from the globular cluster M15

Dengke Zhou Pei Wang Di Li Jianhua Fang Chenchen Miao Paulo C.C.Freire Lei Zhang Dandan Zhang Huaxi Chen Yi Feng Yifan Xiao Jintao Xie Xu Zhang Chenwu Jin Han Wang Yinan Ke Xuerong Guo Rushuang Zhao Chenhui Niu Weiwei Zhu Mengyao Xue Yabiao Wang Jiafu Wu Zhenye Gan Zhongyi Sun Chengjie Wang Jie Zhang Junshuo Zhang Jinhuang Cao Wanjin Lu
中国科学:物理学 力学 天文学(英文版)2024，Vol.67Issue(6) ：166-180.DOI:10.1007/s11433-023-2362-x
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  • 万方数据

A discovery of two slow pulsars with FAST:"Ronin"from the globular cluster M15

Dengke Zhou 1Pei Wang 2Di Li 3Jianhua Fang 1Chenchen Miao 1Paulo C.C.Freire 4Lei Zhang 5Dandan Zhang 6Huaxi Chen 1Yi Feng 1Yifan Xiao 7Jintao Xie 1Xu Zhang 1Chenwu Jin 1Han Wang 1Yinan Ke 1Xuerong Guo 1Rushuang Zhao 8Chenhui Niu 9Weiwei Zhu 2Mengyao Xue 10Yabiao Wang 11Jiafu Wu 11Zhenye Gan 11Zhongyi Sun 11Chengjie Wang 11Jie Zhang 7Junshuo Zhang 12Jinhuang Cao 12Wanjin Lu12
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作者信息

  • 1. Research Center for Astronomical Computing,Zhejiang Laboratory,Hangzhou 311121,China
  • 2. National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China
  • 3. National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China;New Cornerstone Science Laboratory,Shenzhen 518054,China
  • 4. Max Planck Institut für Radioastronomie,Bonn 53121,Germany
  • 5. National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;Centre for Astrophysics and Supercomputing,Swinburne University of Technology,Hawthorn 3122,Australia
  • 6. School of Mathematical Sciences,School of Physics and Electronic Sciences,Guizhou Normal University,Guiyang 550001,China;Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing,Guiyang 550001,China
  • 7. School of Physics and Electronic Engineering,Qilu Normal University,Jinan 250200,China
  • 8. School of Physics and Electronic Science,Guizhou Normal University,Guiyang 550001,China
  • 9. College of Physical Science and Technology,Central China Normal University,Wuhan 430079,China
  • 10. National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China
  • 11. Tencent Youtu Lab,Shanghai 201103,China
  • 12. National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China
  • 折叠

Abstract

Globular clusters harbor numerous millisecond pulsars,but long-period pulsars(P(≥)100 ms)are rarely found.In this study,we employed a fast folding algorithm to analyze observational data from multiple globular clusters obtained by the Five-hundred-meter Aperture Spherical radio Telescope(FAST),aiming to detect the existence of long-period pulsars.We estimated the impact of the median filtering algorithm in eliminating red noise on the minimum detectable flux density(S min)of pulsars.Subse-quently,we successfully discovered two isolated long-period pulsars in M15 with periods approximately equal to 1.928451 and 3.960716 s,respectively.On the P-P diagram,both pulsars are positioned below the spin-up line,suggesting a possible history of partial recycling in X-ray binary systems disrupted by dynamical encounters later on.According to timing results,these two pulsars exhibit remarkably strong magnetic fields.If the magnetic fields were weakened during the accretion process,then a short duration of accretion might explain the strong magnetic fields of these pulsars.

Key words

pulsar/globular cluster/FAST

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基金项目

National Natural Science Foundation of China(11988101)

National Natural Science Foundation of China(12103013)

National Natural Science Foundation of China(12041303)

National Natural Science Foundation of China(U2031117)

National Natural Science Foundation of China(12373109)

National Natural Science Foundation of China(12103069)

National SKA Program of China(2020SKA0120200)

National SKA Program of China(2022SKA0130100)

National SKA Program of China(2022SKA0130104)

National Key Research and Development Program of China(2023YFB4503300)

Foundation of Science and Technology of Guizhou Province(2021023)

Foundation of Guizhou Provincial Education Department(KY2020003)

Foundation of Guizhou Provincial Education Department(KY2023059)

ACAMAR Postdoctoral Fellowship()

CAS Youth Interdisciplinary Team()

Youth Innovation Promotion Association CAS(id.2021055)

Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS()

出版年

2024
中国科学:物理学 力学 天文学(英文版)
中国科学院

中国科学:物理学 力学 天文学(英文版)

CSTPCD
影响因子：0.91
ISSN：1674-7348
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