Institutional Repository of Radio Astronomy Research Laboratory
| Bright-mode Emission from PSR B0823+26 Using the Five-hundred-meter Aperture Spherical Radio Telescope | |
Chen, J. L.1 ; Wen, Z. G.2; Duan, X. F.2,3; He, D. L.2; Wang ,N.2; Lyu, C. B.4; Wang ,H. G.2,4; Li, D.2,5,6; Yuan, J. P.2; Han, W.2; Wang, Z.2; Yuen, R.2; Yan, W. M.2; Xiang, B. B.7; Dang, S. J.8; Wang, H.1; Niu, J. R.5; Wang, J. P.1; Ergesh, T.9; Cui, S. R.1; Zhang, Y. J.1
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| 2023-03-01 | |
| Source Publication | The Astrophysical Journal
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| ISSN | 0004-637X |
| Volume | 946Issue:1Pages:2 |
| Contribution Rank | 2 |
| Abstract | Abstract Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), we have recorded over 1.2 × 104 single pulses from PSR B0823+26 (J0826+2637) at 1.25 GHz with 500 MHz bandwidth. These high-sensitivity observations detected with FAST are unprecedented. We investigated potentially interesting emission features by analyzing the polarimetric individual pulses during the bright state. The average pulse profile has a weak postcursor component and a wide interpulse along with a narrow main pulse. The pulse energy distribution of the main pulse shows the presence of triple emission modes. When the emission ceases in the main pulse component, low-level emission in the interpulse component is detected, whereas the absence of any emission in the postcursor component is shown. In the postcursor emission region, bright pulses are detected in 422 rotations with the relative pulse energy described by a power-law distribution with index of ?2.52 ± 0.09, while the peak flux density ratio appears to follow a logarithmic normal distribution. The intervals between bright pulses can be described with a Poisson process with the occurrence rate estimated to be one bright pulse every 14 s. The fluctuation spectral analysis reveals the existence of a form of periodic amplitude modulation unrelated to subpulse drifting in both the main pulse and interpulse components. Furthermore, the modulation patterns in the main pulse and interpulse are found to be locked in pulse longitude, signifying some information transfer between the two magnetic polar regions. |
| Keyword | empirical-theory pulsar emission modulation properties frequency-dependence subpulse modulation x-ray polarization intensity mechanism discovery |
| DOI | 10.3847/1538-4357/acbd97 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000954250100001 |
| Publisher | The American Astronomical Society |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6261 |
| Collection | 射电天文研究室_脉冲星研究团组 科研仪器设备产出_我台利用FAST观测数据文章 |
| Corresponding Author | Wen, Z. G. |
| Affiliation | 1.Department of Physics and Electronic Engineering, Yuncheng University, Yuncheng, Shanxi, 044000, People’s Republic of China 2.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang, 830011, People's Republic of China; wenzhigang@xao.ac.cn 3.Xinjiang Key Laboratory of Microwave Technology, Urumqi, Xinjiang, 830011, People's Republic of China 4.School of Physics and Electronic Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, People's Republic of China 5.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China 6.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban, 4000, South Africa 7.School of Mechanical Engineering, Xinjiang University, Urumqi, Xinjiang, 830017, People's Republic of China 8.School of Physics and Electronic Science, Guizhou Normal University, Guiyang, Guizhou, 550001, People's Republic of China 9.Jihua Laboratory, Foshan, Guangdong, 528200, People's Republic of China |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Chen, J. L.,Wen, Z. G.,Duan, X. F.,et al. Bright-mode Emission from PSR B0823+26 Using the Five-hundred-meter Aperture Spherical Radio Telescope[J]. The Astrophysical Journal,2023,946(1):2. |
| APA | Chen, J. L..,Wen, Z. G..,Duan, X. F..,He, D. L..,Wang ,N..,...&Zhang, Y. J..(2023).Bright-mode Emission from PSR B0823+26 Using the Five-hundred-meter Aperture Spherical Radio Telescope.The Astrophysical Journal,946(1),2. |
| MLA | Chen, J. L.,et al."Bright-mode Emission from PSR B0823+26 Using the Five-hundred-meter Aperture Spherical Radio Telescope".The Astrophysical Journal 946.1(2023):2. |
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| Chen-2023-Bright-mod（2199KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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