Bright-mode Emission from PSR B0823+26 Using the Five-hundred-meter Aperture Spherical Radio Telescope
文献类型：期刊论文
| 作者 | Chen, J. L.3 ; Wen, Z. G.7; Duan, X. F.7,8; He, D. L.7; Wang ,N.7; Lyu, C. B.5; Wang ,H. G.5,7; Li, D.4,6,7; Yuan, J. P.7; Han, W.7
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| 刊名 | The Astrophysical Journal
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| 出版日期 | 2023-03-01 |
| 卷号 | 946期号:1页码:2 |
| 关键词 | empirical-theory pulsar emission modulation properties frequency-dependence subpulse modulation x-ray polarization intensity mechanism discovery |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/acbd97 |
| 产权排序 | 2 |
| 英文摘要 | 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. |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000954250100001 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6260]  |
| 专题 | 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 |
| 通讯作者 | Wen, Z. G. |
| 作者单位 | 1.School of Physics and Electronic Science, Guizhou Normal University, Guiyang, Guizhou, 550001, People's Republic of China 2.School of Mechanical Engineering, Xinjiang University, Urumqi, Xinjiang, 830017, People's Republic of China 3.Department of Physics and Electronic Engineering, Yuncheng University, Yuncheng, Shanxi, 044000, People’s Republic of China 4.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, People's Republic of China 5.School of Physics and Electronic Engineering, Guangzhou University, Guangzhou, Guangdong, 510006, People's Republic of China 6.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban, 4000, South Africa 7.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi, Xinjiang, 830011, People's Republic of China; wenzhigang@xao.ac.cn 8.Xinjiang Key Laboratory of Microwave Technology, Urumqi, Xinjiang, 830011, People's Republic of China 9.Jihua Laboratory, Foshan, Guangdong, 528200, People's Republic of China |
| 推荐引用方式 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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