Close-in Exoplanets as Candidates for Strange Quark Matter Objects
文献类型：期刊论文
| 作者 | Kuerban,Abudushataer1,2; Geng,Jin-Jun1,2; Huang,Yong-Feng1,2; Zong,Hong-Shi3,4,5; Gong,Hang6 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2020-02-10 |
| 卷号 | 890期号:1 |
| 关键词 | Gravitational waves Pulsars Neutron stars Exoplanet systems |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab698b |
| 英文摘要 | Abstract Since the true ground state of hadrons may be strange quark matter (SQM), pulsars may actually be strange stars rather than neutron stars. According to this SQM hypothesis, strange planets can also stably exist. The density of normal matter planets can hardly be higher than 30?g?cm?3. They will be tidally disrupted when the orbital radius is less than ～5.6?×?1010 cm, or when the orbital period (Porb) is less than ～6100 s. However, an SQM planet can safely survive even when it is very close to the host, due to its high density. This feature can help us identify SQM objects. Here, we have tried to search for SQM objects among close-in exoplanets orbiting around pulsars. It is found that four pulsar planets (XTE J1807-294 b, XTE J1751-305 b, PSR 0636 b, PSR J1807-2459A b) completely meet the criterion of Porb? |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-890-1-AB698B |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/53968]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 1.School of Astronomy and Space Science, Nanjing University, Nanjing 210023, People's Republic of China; hyf@nju.edu.cn, gengjinjun@nju.edu.cn, lompa46@163.com 2.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210023, People's Republic of China 3.Department of Physics, Nanjing University, Nanjing 210093, People's Republic of China 4.Department of Physics, Anhui Normal University, Wuhu, Anhui 241000, People's Republic of China 5.Nanjing Proton Source Research and Design Center, Nanjing 210093, People's Republic of China 6.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Kuerban,Abudushataer,Geng,Jin-Jun,Huang,Yong-Feng,et al. Close-in Exoplanets as Candidates for Strange Quark Matter Objects[J]. The Astrophysical Journal,2020,890(1). |
| APA | Kuerban,Abudushataer,Geng,Jin-Jun,Huang,Yong-Feng,Zong,Hong-Shi,&Gong,Hang.(2020).Close-in Exoplanets as Candidates for Strange Quark Matter Objects.The Astrophysical Journal,890(1). |
| MLA | Kuerban,Abudushataer,et al."Close-in Exoplanets as Candidates for Strange Quark Matter Objects".The Astrophysical Journal 890.1(2020). |
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来源：国家天文台
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