Ultra-wideband polarimetry of the April 2021 profile change event in PSR J1713+0747
文献类型：期刊论文
| 作者 | Mandow, Rami F.7,8; Zic, Andrew6,7; Dawson, J. R.7,8; Wang, Shuangqiang5,7; Curylo, Malgorzata3,4; Dai, Shi7; Di Marco, Valentina3,4,7; Hobbs, George7; Gupta, Vivek7; Kapur, Agastya2,7,8 |
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA
 |
| 出版日期 | 2025-10-08 |
| 卷号 | 42页码:e142 |
| 关键词 | general pulsars: individual: PSR J1713+0747 magnetic fields |
| ISSN号 | 1323-3580 |
| DOI | 10.1017/pasa.2025.10099 |
| 产权排序 | 4 |
| 英文摘要 | The millisecond pulsar PSR J1713+0747 is a high-priority target for pulsar timing array experiments due to its long-term timing stability, and bright, narrow pulse profile. In April 2021, PSR J1713+0747 underwent a significant profile change event, observed by several telescopes worldwide. Using the broad bandwidth and polarimetric fidelity of the Ultra-Wideband Low-frequency receiver on Murriyang, CSIRO's Parkes radio telescope, we investigated the long-term spectro-polarimetric behaviour of this profile change in detail. We highlight the broad-bandwidth nature of the event, which exhibits frequency dependence that is inconsistent with cold-plasma propagation effects. We also find that spectral and temporal variations are stronger in one of the orthogonal polarisation modes than the other and observe mild variations (similar to 3 - 5 sigma significance) in circular polarisation above 1 400 MHz following the event. However, the linear polarisation position angle remained remarkably stable in the profile leading edge throughout the event. With over three years of data post-event, we find that the profile has not yet recovered back to its original state, indicating a long-term asymptotic recovery, or a potential reconfiguration of the pulsar's magnetic field. These findings favour a magnetospheric origin of the profile change event over a line-of-sight propagation effect in the interstellar medium. |
| 资助项目 | Australian Government ; Australian Research Council (ARC)[DE250100508] ; Australian Research Council Centre of Excellence for Gravitational Wave Discovery[CE230100016] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001609220900001 |
| 出版者 | CAMBRIDGE UNIV PRESS |
| 资助机构 | Australian Government ; Australian Research Council (ARC) ; Australian Research Council Centre of Excellence for Gravitational Wave Discovery |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/8296]  |
| 专题 | 脉冲星研究团组 |
| 通讯作者 | Mandow, Rami F. |
| 作者单位 | 1.CSIRO Sci Comp, Australian Technol Pk, Alexandria, NSW, Australia 2.CSIRO Data61, Marsfield, NSW, Australia 3.OzGrav ARC Ctr Excellence Gravitat Wave Discovery, Clayton, Vic, Australia 4.Monash Univ, Sch Phys & Astron, Clayton, VIC, Australia 5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Xinjiang, Peoples R China 6.OzGrav ARC Ctr Excellence Gravitat Wave Discovery, Hawthorn, VIC, Australia 7.CSIRO, Australia Telescope Natl Facil, Space & Astron, Epping, NSW, Australia 8.Macquarie Univ, Dept Math & Phys Sci, Sydney, NSW, Australia 9.Naval Res Lab, Space Sci Div, Washington, DC USA 10.Beijing Normal Univ, Fac Arts & Sci, Dept Phys, Zhuhai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mandow, Rami F.,Zic, Andrew,Dawson, J. R.,et al. Ultra-wideband polarimetry of the April 2021 profile change event in PSR J1713+0747[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,2025,42:e142. |
| APA | Mandow, Rami F..,Zic, Andrew.,Dawson, J. R..,Wang, Shuangqiang.,Curylo, Malgorzata.,...&Zhu, Xingjiang.(2025).Ultra-wideband polarimetry of the April 2021 profile change event in PSR J1713+0747.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA,42,e142. |
| MLA | Mandow, Rami F.,et al."Ultra-wideband polarimetry of the April 2021 profile change event in PSR J1713+0747".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA 42(2025):e142. |
入库方式： OAI收割
来源：新疆天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。