Investigation of Periodic Modulation Behaviors from Pulsar J2022+5154

J. L. Chen; Z. G. Wen; Z. Wang; X. F. Duan; D. L. He; N. Wang; H. G. Wang; J. P. Yuan; L. Huang; C. B. Lyu; R. Yuen; W. M. Yan; Z. W. Wu; W. Han; B. B. Xiang; A. J. Dong

doi:10.3847/1538-4357/ad0f94

The Astrophysical Journal (Jan 2024)

Investigation of Periodic Modulation Behaviors from Pulsar J2022+5154

J. L. Chen,
Z. G. Wen,
Z. Wang,
X. F. Duan,
D. L. He,
N. Wang,
H. G. Wang,
J. P. Yuan,
L. Huang,
C. B. Lyu,
R. Yuen,
W. M. Yan,
Z. W. Wu,
W. Han,
B. B. Xiang,
A. J. Dong

Affiliations

J. L. Chen: ORCiD; Department of Physics and Electronic Engineering, Yuncheng University , Yuncheng, Shanxi, 044000, People’s Republic of China
Z. G. Wen: ORCiD; Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]
Z. Wang: ORCiD; Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]; Xinjiang Key Laboratory of Radio Astrophysics , Urumqi, Xinjiang, 830011, People’s Republic of China
X. F. Duan: Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]; Key Laboratory of Microwave Technology , Urumqi, Xinjiang, 830011, People’s Republic of China
D. L. He: Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]
N. Wang: ORCiD; Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]
H. G. Wang: ORCiD; Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]; School of Physics and Electronic Engineering, Guangzhou University , Guangzhou, Guangdong, 510006, People’s Republic of China
J. P. Yuan: Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]
L. Huang: Department of Physics and Electronic Engineering, Yuncheng University , Yuncheng, Shanxi, 044000, People’s Republic of China
C. B. Lyu: School of Physics and Electronic Engineering, Guangzhou University , Guangzhou, Guangdong, 510006, People’s Republic of China
R. Yuen: Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]
W. M. Yan: ORCiD; Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]
Z. W. Wu: Department of Physics and Electronic Engineering, Yuncheng University , Yuncheng, Shanxi, 044000, People’s Republic of China
W. Han: Xinjiang Astronomical Observatory, Chinese Academy of Sciences , Urumqi, Xinjiang, 830011, People’s Republic of China ; [email protected]
B. B. Xiang: School of Mechanical Engineering, Xinjiang University , Urumqi, Xinjiang, 830017, People's Republic of China
A. J. Dong: ORCiD; School of Physics and Electronic Science, Guizhou Normal University , Guiyang, 550025, People’s Republic of China

DOI: https://doi.org/10.3847/1538-4357/ad0f94
Journal volume & issue: Vol. 961, no. 1
p. 114

Abstract

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We have carried out a detailed study of individual pulse emission from the pulsar J2022+5154 (B2021+51), observed at 2250 MHz using the Jiamusi 66 m radio telescope. We have investigated the modulations in single-pulse behavior using fluctuation spectral analysis, which shows the presence of two prominent periodicities, around 5 and 40 rotation periods, respectively. The shorter periodicity is associated with the phenomenon of subpulse drifting. In the absence of aliasing, the emission pattern is demonstrated to consist of eight subbeams, which rotate around the magnetic axis in about 45 periods. In addition to subpulse drifting, the pulsar also shows the presence of periodic amplitude modulation with a longer periodicity in the single-pulse sequence. The pulsar joins a select group that shows the presence of periodic phase-modulated drifting as well as amplitude-modulated drifting. This provides further evidence for the two phenomena being distinct from each other with different physical origins.

Radio pulsars

Published in The Astrophysical Journal

ISSN: 1538-4357 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/0004-637X

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