Revealing the Unseen: The Discovery of Long-awaited Radiation from the Intermittent Pulsar PSR B1931+24
文献类型：期刊论文
| 作者 | Rusul, Abdujappar5; Wen, Z. G.4; Yuan, J. P.4; Esamdin, Ali4; Zheng, X. P.3; Kramer, Michael1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2026-03-01 |
| 卷号 | 999期号:1页码:19 |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/ae3f2a |
| 通讯作者 | Rusul, Abdujappar(aai-pulsar@qq.com) |
| 英文摘要 | Pulsars are typically characterized by their stable, highly magnetized, and fast-rotating nature, which underpins their persistent radio emissions. However, the discovery of prolonged radio-quiet ("off") states in intermittent pulsars, such as PSR B1931+24, has been challenging the fundamental theory of pulsar magnetospheric emission. Despite long-term monitoring with several telescopes over 20 yr, the observations of PSR B1931+24 had not detected any significant emission during its "off" states. Recently, sensitive observations via the Five-hundred-meter Aperture Spherical radio Telescope revealed the mysterious weak emissions containing occasional faint bursting pulses during the "off" states of PSR B1931+24, signifying the theory of pulsar magnetospheric emission that the pulsar cannot remain off for long unless it truly dies. Along with a substantial decrease in flux density, a contraction and change in the integrated pulse profile are measured in the "off" state compared to the radio-loud ("on") state, indicating alterations in the plasma supply and magnetospheric structure. Additionally, previously unobserved asynchronous, nonuniform emission patterns are found in both states, implying a spatially inhomogeneous pair-cascade associated with the coherent radio emission of the pulsar. Furthermore, statistical comparisons between the faint off-state bursts and the on-state emission show that the faint bursts cannot be explained simply as a scaled-down version of the on-state emission. Instead, they constitute a distinct emission mode, plausibly linked to changes in plasma supply and the magnetospheric configuration of PSR B1931+24. These findings greatly advance our understanding of pulsar magnetospheric dynamics and emission mechanisms. |
| WOS关键词 | RADIO PULSAR ; SPIN-DOWN ; MAGNETOSPHERE ; SEARCHES ; ORIGIN ; NULLS ; MODEL ; GAPS |
| 资助项目 | MOST divided by National Natural Science Foundation of China (NSFC)[12103021] ; Key Program of the National Natural Foundation of China[12033001] ; National SKA Program of China[2020SKA0120300] ; (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Natural Science Foundation of Xinjiang Uygur Autonomous Region (Xinjiang Natural Science Foundation)[2025D01A14] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001697528800001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Natural Science Foundation of China (NSFC) ; Key Program of the National Natural Foundation of China ; National SKA Program of China ; (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Natural Science Foundation of Xinjiang Uygur Autonomous Region (Xinjiang Natural Science Foundation) |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8602]  |
| 专题 | 脉冲星研究团组 |
| 通讯作者 | Rusul, Abdujappar |
| 作者单位 | 1.Max Planck Inst Radioastron, Bonn, Germany 2.Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Manchester, England 3.Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 5.Kashi Univ, Inst Phys & Elect Engn, Kashgar 844009, Peoples R China |
| 推荐引用方式 GB/T 7714 | Rusul, Abdujappar,Wen, Z. G.,Yuan, J. P.,et al. Revealing the Unseen: The Discovery of Long-awaited Radiation from the Intermittent Pulsar PSR B1931+24[J]. ASTROPHYSICAL JOURNAL LETTERS,2026,999(1):19. |
| APA | Rusul, Abdujappar,Wen, Z. G.,Yuan, J. P.,Esamdin, Ali,Zheng, X. P.,&Kramer, Michael.(2026).Revealing the Unseen: The Discovery of Long-awaited Radiation from the Intermittent Pulsar PSR B1931+24.ASTROPHYSICAL JOURNAL LETTERS,999(1),19. |
| MLA | Rusul, Abdujappar,et al."Revealing the Unseen: The Discovery of Long-awaited Radiation from the Intermittent Pulsar PSR B1931+24".ASTROPHYSICAL JOURNAL LETTERS 999.1(2026):19. |
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来源：新疆天文台
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