Observational Features of Exoplanetary Synchrotron Radio Bursts
文献类型：期刊论文
| 作者 | Gao, Yang2; Qian, Lei3; Li, Di1,3,4 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 895期号:1页码:7 |
| ISSN号 | 0004-637X |
| 关键词 | Exoplanets Radio bursts Magnetospheric radio emissions Magnetic fields Stellar flares |
| DOI | 10.3847/1538-4357/ab881b |
| 英文摘要 | The magnetic fields of exoplanets shield the planets from cosmic rays and interplanetary plasma. Due to the interaction with the electrons from their host stars, the exoplanetary magnetospheres are predicted to have both cyclotron and synchrotron radio emissions, neither of which have been definitively identified in observations. As the coherent cyclotron emission has been extensively studied in the literature, here we focus on planetary synchrotron radiation with bursty behaviors (i.e., radio flares) caused by the outbreaks of energetic electron ejections from the host star. Two key parameters of the bursty synchrotron emissions, namely the flux density and burst rate, and two key features, namely the burst light curve and frequency shift, are predicted for star-hot Jupiter systems. The planetary orbital phase-burst rate relation is also considered as the signature of star-planet interactions. As examples, previous X-ray and radio observations of two well-studied candidate systems, HD 189733 and V830 tau, are adopted to predict their specific burst rates and fluxes of bursty synchrotron emissions for further observational confirmations. The detectability of such emissions by current and upcoming radio telescopes shows that we are at the dawn of discoveries. |
| WOS关键词 | T-TAURI ; EXTREME-ULTRAVIOLET ; STELLAR FLARES ; HOT JUPITER ; EMISSION ; SOLAR ; RECONNECTION ; STARS ; RADIATION ; SEARCH |
| 资助项目 | National Natural Science Foundation of China[11988101] ; Sun Yat-Sen University |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000536890900001 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Sun Yat-Sen University ; Sun Yat-Sen University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Sun Yat-Sen University ; Sun Yat-Sen University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Sun Yat-Sen University ; Sun Yat-Sen University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Sun Yat-Sen University ; Sun Yat-Sen University |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54828]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Gao, Yang |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Guangdong, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing 100101, Peoples R China 4.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa |
| 推荐引用方式 GB/T 7714 | Gao, Yang,Qian, Lei,Li, Di. Observational Features of Exoplanetary Synchrotron Radio Bursts[J]. ASTROPHYSICAL JOURNAL,2020,895(1):7. |
| APA | Gao, Yang,Qian, Lei,&Li, Di.(2020).Observational Features of Exoplanetary Synchrotron Radio Bursts.ASTROPHYSICAL JOURNAL,895(1),7. |
| MLA | Gao, Yang,et al."Observational Features of Exoplanetary Synchrotron Radio Bursts".ASTROPHYSICAL JOURNAL 895.1(2020):7. |
入库方式： OAI收割
来源：国家天文台
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