Intriguing Drifting Subpulses in the Vela Pulsar | Zendy

Z. G. Wen | Zendy; J. L. Chen | Zendy; L. F. Hao | Zendy; W. M. Yan | Zendy; H. G. Wang | Zendy; Jia-Shuo Li | Zendy; J. P. Yuan | Zendy; K. J. Lee | Zendy; Na Wang | Zendy; R. Yuen | Zendy; Yonghua Xu | Zendy; Z. X. Li | Zendy; Yaohuan Huang | Zendy

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Intriguing Drifting Subpulses in the Vela Pulsar

Author(s) -

Z. G. Wen,

J. L. Chen,

L. F. Hao,

W. M. Yan,

H. G. Wang,

Jia-Shuo Li,

J. P. Yuan,

K. J. Lee,

Na Wang,

R. Yuen,

Yonghua Xu,

Z. X. Li,

Yaohuan Huang

Publication year - 2020

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/abaab7

Subject(s) - vela , physics , pulsar , astrophysics , pulse (music) , radio telescope , amplitude , longitude , phase (matter) , astronomy , modulation (music) , telescope , optics , latitude , quantum mechanics , detector , acoustics

We report on the discovery of drifting subpulses from the Vela pulsar, observed using the Yunnan 40 m radio telescope at 6800 MHz observing frequency. The single pulses show the presence of two distinct drifting patterns, where the central component is modulated in longitude and amplitude simultaneously with a period of 9 pulses, and the trailing component remains phase stationary within the pulse window but periodically changes in intensity with a period of 29 pulses. The leading component emission remains constant in intensity and pulse phase. Such periodic modulation in the Vela pulsar is a separate phenomenon from periodic nulling and traditional subpulse drifting, which may lead to a greater understanding of the pulse emission mechanism.

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