The Chinese pulsar timing array data release I
We present polarization pulse profiles for 56 millisecond pulsars (MSPs) monitored by the Chinese Pulsar Timing Array (CPTA) collaboration using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The observations centered at 1.25 GHz with a raw bandwidth of 500 MHz. Due to the high sensitivity (∼16 K/Jy) of the FAST telescope and our long integration time, the high signal-to-noise ratio polarization profiles show features hardly detected before. Among 56 pulsars, the polarization profiles of PSRs J0406+3039, J1327+3423, and J2022+2534 were not previously reported. 80% of MSPs in the sample show weak components below 3% of peak flux, 25% of pulsars show interpulse-like structures, and most pulsars show linear polarization position angle jumps. Six pulsars seem to be emitting for full rotation phase, with another thirteen pulsars being good candidates for such a 360° radiator. We find that the distribution of the polarization percentage in our sample is compatible with the normal pulsar distribution. Our detailed evaluation of the MSP polarization properties suggests that the wave propagation effects in the pulsar magnetosphere are important in shaping the MSP polarization pulse profiles.
Authors
- J. L. Han (ORCID: https://orcid.org/0000-0002-9274-3092)
- R. N. Caballero (ORCID: https://orcid.org/0000-0001-9084-9427)
- Youling Yue (ORCID: https://orcid.org/0000-0003-4415-2148)
- Kejia Lee (ORCID: https://orcid.org/0000-0002-1435-0883)
- Siyuan Chen (ORCID: https://orcid.org/0000-0002-3118-5963)
- Heng Xu (ORCID: https://orcid.org/0000-0002-5031-8098)
- Jiangwei Xu
- Zezhong Xu (ORCID: https://orcid.org/0000-0003-2463-4270)
- Chunwen Sun (ORCID: https://orcid.org/0000-0002-3610-9396)
- Meng-Lin Huang (ORCID: https://orcid.org/0000-0002-3050-5400)
- Jinchen Jiang (ORCID: https://orcid.org/0000-0002-6465-0091)
- Zhiqiang Shen (ORCID: https://orcid.org/0000-0003-0804-2478)
- Yuxiang Huang (ORCID: https://orcid.org/0000-0003-4581-2443)
- Renxin Xu (ORCID: https://orcid.org/0000-0003-4899-3905)
- Bojun Wang (ORCID: https://orcid.org/0000-0002-9434-4773)
- Jintao Luo (ORCID: https://orcid.org/0009-0001-9213-3040)
- Lei Qian (ORCID: https://orcid.org/0000-0002-0153-2717)
- Min Wang (ORCID: https://orcid.org/0000-0003-2655-9833)
- Yan Zhu (ORCID: https://orcid.org/0000-0002-1884-2404)
- Jingbo Wang (ORCID: https://orcid.org/0000-0001-7544-0084)
- Na Wang
- Peng Jiang (ORCID: https://orcid.org/0000-0002-5387-7952)
- Xiangping Wu
- Zhi‐Xuan Li (ORCID: https://orcid.org/0000-0002-8590-875X)
- Yanjun Guo (ORCID: https://orcid.org/0000-0001-8876-3755)
- J. P. Yuan
- Longfei Hao (ORCID: https://orcid.org/0009-0001-5060-7770)
- Xin Guan
- Yonghua Xu
- Zihan Xue
Institutions
- Chinese Academy of Sciences (CN)
- Peking University (CN)
- Hellenic Open University (GR)
- Shanghai Astronomical Observatory (CN)
- Xinjiang Astronomical Observatory (CN)
- Yunnan Observatories (CN)
- Lishui University (CN)
- National Time Service Center (CN)
- Kavli Institute for Theoretical Sciences (CN)
- National Astronomical Observatories (CN)
- Beijing Advanced Sciences and Innovation Center (CN)
- State Key Laboratory of Nuclear Physics and Technology
Publication Details
- Journal
- Astronomy and Astrophysics
- Published
- 2025-02-18
- DOI
- https://doi.org/10.1051/0004-6361/202452960
- Citations
- 7
- Primary Topic
- Pulsars and Gravitational Waves Research
- Type
- article
- Field-Weighted Citation Impact
- 8.08
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- China Postdoctoral Science Foundation
- Max-Planck-Gesellschaft
- National Key Research and Development Program of China
- National Astronomical Observatories, Chinese Academy of Sciences