1. A 44-minute periodic radio transient in a supernova remnant
- Author
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Li, Di, Yuan, Mao, Wu, Lin, Yan, Jingye, Lv, Xuning, Tsai, Chao-Wei, Wang, Pei, Zhu, WeiWei, Deng, Li, Lan, Ailan, Xu, Renxin, Chen, Xianglei, Meng, Lingqi, Li, Jian, Li, Xiangdong, Zhou, Ping, Yang, Haoran, Xue, Mengyao, Lu, Jiguang, Miao, Chenchen, Wang, Weiyang, Niu, Jiarui, Fang, Ziyao, Fu, Qiuyang, Feng, Yi, Zhang, Peijin, Jiang, Jinchen, Miao, Xueli, Chen, Yu, Sun, Lingchen, Yang, Yang, Deng, Xiang, Dai, Shi, Chen, Xue, Yao, Jumei, Liu, Yujie, Li, Changheng, Zhang, Minglu, Yang, Yiwen, Zhou, Yucheng, Yiyizhou, Zhang, Yongkun, Niu, Chenhui, Zhao, Rushuang, Zhang, Lei, Peng, Bo, Wu, Ji, and Wang, Chi
- Subjects
Astrophysics - High Energy Astrophysical Phenomena - Abstract
Long-period radio transients (LPTs) are a newly discovered class of radio emitters with yet incomprehensibly long rotation periods, ranging from minutes to hours. The astrophysical nature of their isolated counterparts remains undetermined. We report a new LPT, DART J1832-0911 (2656.23 $\pm$ 0.15 s period), the first evidence associating such objects to supernova remnants (SNRs). Its dispersion measure distance aligns well with the distance of the SNR, confirming its origin from a supernova explosion. The source displays either phase-locked circularly polarized emission or nearly 100% linear polarization in radio bands. No detectable optical counterpart was found, even with a 10 m class telescope. The J1832-0911's SNR association, stable, highly polarized emission, and abnormally long period strongly favor its origin from a young neutron star, whose spin has been braked, possibly by interaction with supernova's fallback materials. This discovery provides critical insights into the nature of ultra-long period transients and their evolutionary link to stellar remnants., Comment: 36 pages, 12 figures
- Published
- 2024