Timing and Scintillation Studies of Pulsars in Globular Cluster M3 (NGC 5272) with FAST

Abstract We present the phase-connected timing solutions of all five pulsars in globular cluster M3 (NGC 5272), namely PSRs M3A to F (PSRs J1342+2822A to F), with the exception of PSR M3C, from FAST archival data. In these timing solutions, those of PSRs M3E and F are obtained for the first time. We find that PSRs M3E and F have low-mass companions and are in circular orbits with periods of 7.1 and 3.0 days, respectively. For PSR M3C, we have not detected its signal in all 41 observations. We found no X-ray counterparts for these pulsars in archival Chandra images in the band of 0.2–20 keV. From the autocorrelation function analysis of M3A and M3B’s dynamic spectra, the scintillation timescale ranges from 7.0 ± 0.3 to 60.0 ± 0.6 minutes, and the scintillation bandwidth ranges from 4.6 ± 0.2 to 57.1 ± 1.1 MHz. The measured scintillation bandwidths from the dynamic spectra indicate strong scintillation, and the scattering medium is anisotropic. From the secondary spectra, we captured a scintillation arc only for PSR M3B with a curvature of 649 ± 23 m −1 mHz −2 .

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Publication Details

Journal
The Astrophysical Journal
Published
2024-08-23
DOI
https://doi.org/10.3847/1538-4357/ad5a82
Citations
9
Primary Topic
Pulsars and Gravitational Waves Research
Type
article
Field-Weighted Citation Impact
2.98

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article

Timing and Scintillation Studies of Pulsars in Globular Cluster M3 (NGC 5272) with FAST

Yu Pan, Zhichen Pan, Yaowei Li, Tianhao Su et al.
9 citations
The Astrophysical Journal
Pulsars and Gravitational Waves Research
2.98
article

Timing and Scintillation Studies of Pulsars in Globular Cluster M3 (NGC 5272) with FAST

Yu Pan, Zhichen Pan, Yaowei Li, Tianhao Su, Lei Qian, Kuo Liu, Ralph P. Eatough, Dejiang Yin, Baoda Li, Yujie Lian, Yuxiao Wu, Minghui Li, Lin Wang, Liyun Zhang, Jumei Yao, Yinfeng Dai, Yifeng Li, Tong Liu, Xingnan Zhang
article en
9 citations

Abstract

Abstract We present the phase-connected timing solutions of all five pulsars in globular cluster M3 (NGC 5272), namely PSRs M3A to F (PSRs J1342+2822A to F), with the exception of PSR M3C, from FAST archival data. In these timing solutions, those of PSRs M3E and F are obtained for the first time. We find that PSRs M3E and F have low-mass companions and are in circular orbits with periods of 7.1 and 3.0 days, respectively. For PSR M3C, we have not detected its signal in all 41 observations. We found no X-ray counterparts for these pulsars in archival Chandra images in the band of 0.2–20 keV. From the autocorrelation function analysis of M3A and M3B’s dynamic spectra, the scintillation timescale ranges from 7.0 ± 0.3 to 60.0 ± 0.6 minutes, and the scintillation bandwidth ranges from 4.6 ± 0.2 to 57.1 ± 1.1 MHz. The measured scintillation bandwidths from the dynamic spectra indicate strong scintillation, and the scattering medium is anisotropic. From the secondary spectra, we captured a scintillation arc only for PSR M3B with a curvature of 649 ± 23 m −1 mHz −2 .

The Astrophysical JournalVol. 972(1)
Chongqing University of Posts and Telecommunications (CN), Guizhou University (CN), Chinese Academy of Sciences (CN), Peking University (CN), Beijing Normal University (CN), Shanghai Astronomical Observatory (CN), Xinjiang Astronomical Observatory (CN), National Time Service Center (CN), Kavli Institute for Theoretical Sciences (CN), Max Planck Institute for Radio Astronomy (DE), National Astronomical Observatories (CN), University of Chinese Academy of Sciences (CN), Xinjiang University (CN)
National Science Foundation, National Natural Science Foundation of China, Chinese Academy of Sciences, Youth Innovation Promotion Association of the Chinese Academy of Sciences, National Key Research and Development Program of China, Youth Innovation Promotion Association, National Astronomical Observatories, Chinese Academy of Sciences
Openalex Percentile: Top 9%
Pulsars and Gravitational Waves Research
2.98
DOIOpen Access PDFOpenAlex
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