期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 898, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.3847/2041-8213/aba262
关键词
Magnetars; Soft gamma-ray repeaters; Radio transient sources; Radio bursts; X-ray bursts; Supernova remnants
资金
- National Key Research and Development Program of China [2017YFA0402600]
- National Natural Science Foundation of China [11833003]
- China Postdoctoral Science Foundation [2020M671876]
- Fundamental Research Funds for the Central Universities [WK2030000019]
Owing to the detection of an extremely bright fast radio burst (FRB) 200428 associated with a hard X-ray counterpart from the magnetar soft gamma-ray repeater (SGR) 1935+2154, the distance of SGR 1935+2154 potentially hosted in the supernova remnant (SNR) G57.2+0.8 can be revisited. Under the assumption that the SGR and the SNR are physically related, in this Letter, by investigating the dispersion measure (DM) of the FRB contributed by the foreground medium of our Galaxy and the local environments and combining other observational constraints, we find that the distance of SGR 1935+2154 turns out to be 9.0 2.5 kpc and the SNR radius falls into 10-18 pc since the local DM contribution is as low as 0-18 pc cm(-3). These results are basically consistent with previous studies. In addition, an estimate for the Faraday rotation measure of the SGR and SNR is also carried out.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据