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

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

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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.

pulsarglobular clusterFAST

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

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Research Center for Astronomical Computing,Zhejiang Laboratory,Hangzhou 311121,China

National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China

University of Chinese Academy of Sciences,Beijing 100049,China

New Cornerstone Science Laboratory,Shenzhen 518054,China

Max Planck Institut für Radioastronomie,Bonn 53121,Germany

Centre for Astrophysics and Supercomputing,Swinburne University of Technology,Hawthorn 3122,Australia

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

School of Physics and Electronic Engineering,Qilu Normal University,Jinan 250200,China

School of Physics and Electronic Science,Guizhou Normal University,Guiyang 550001,China

College of Physical Science and Technology,Central China Normal University,Wuhan 430079,China

Tencent Youtu Lab,Shanghai 201103,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational SKA Program of ChinaNational SKA Program of ChinaNational SKA Program of ChinaNational Key Research and Development Program of ChinaFoundation of Science and Technology of Guizhou ProvinceFoundation of Guizhou Provincial Education DepartmentFoundation of Guizhou Provincial Education DepartmentACAMAR Postdoctoral FellowshipCAS Youth Interdisciplinary TeamYouth Innovation Promotion Association CASCultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS

119881011210301312041303U203111712373109121030692020SKA01202002022SKA01301002022SKA01301042023YFB45033002021023KY2020003KY2023059id.2021055

2024

10.1007/s11433-023-2362-x

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
年,卷(期)：2024.67(6)