A Single-pulse Study of the Subpulse Drifter PSR J1631+1252 Discovered at FAST | Zendy

Z. G. Wen | Zendy; J. P. Yuan | Zendy; Na Wang | Zendy; Di Li | Zendy; J. L. Chen | Zendy; P. Wang | Zendy; Q. D. Wu | Zendy; W. M. Yan | Zendy; R. Yuen | Zendy; Zihao Wang | Zendy; H. M. Tedila | Zendy; H. G. Wang | Zendy; Weiwei Zhu | Zendy; J. R. Niu | Zendy; Chenchen Miao | Zendy; Mengyao Xue | Zendy; X. F. Duan | Zendy; B. B. Xiang | Zendy; D. L. He | Zendy

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A Single-pulse Study of the Subpulse Drifter PSR J1631+1252 Discovered at FAST

Author(s) -

Z. G. Wen,

J. P. Yuan,

Na Wang,

Di Li,

J. L. Chen,

P. Wang,

Q. D. Wu,

W. M. Yan,

R. Yuen,

Zihao Wang,

H. M. Tedila,

H. G. Wang,

Weiwei Zhu,

J. R. Niu,

Chenchen Miao,

Mengyao Xue,

X. F. Duan,

B. B. Xiang,

D. L. He

Publication year - 2022

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.3847/1538-4357/ac5d5d

Subject(s) - physics , pulse (music) , radio telescope , astrophysics , modulation (music) , longitude , log normal distribution , telescope , aperture (computer memory) , dispersion (optics) , optics , computational physics , latitude , astronomy , statistics , acoustics , mathematics , detector

We report on the pulse-to-pulse energy distribution and longitude-resolved modulation properties of PSR J1631+1252 discovered by the Five-hundred-meter Aperture Spherical radio Telescope. Our analysis made use of the data acquired at 1250 MHz from the follow-up timing observations that lasted over a year. PSR J1631+1252 has a rotational period of ∼0.310 s, and a dispersion measure of ∼32.73 pc cm −3 . The energy distribution is well described by a lognormal distribution, the parameters of which do not vary with time. We show that large modulation occurs across the bridge emission of the pulse profile, with sporadic bright bursts at the leading emission region. The fluctuation spectral analysis reveals the existence of subpulse drifting in the leading component with vertical spacing between the drift bands of 3.28 ± 0.08 pulse periods between consecutive drift bands. Possible physical mechanisms for subpulse drifting are discussed.

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