Calvera: a low-mass strangeon star torqued by debris disk?
文献类型：期刊论文
| 作者 | Li,Yunyang1; Wang,Weiyang1,2,3; Ge,Mingyu4; Liu,Xiongwei5; Tong,Hao6; Xu,Renxin1,7 |
| 刊名 | The astrophysical journal
 |
| 出版日期 | 2018-02-23 |
| 卷号 | 854期号:2 |
| 关键词 | Accretion, accretion disks Pulsars: individual (calvera1rxs j141256.0+792204) Stars: neutron |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/aaa671 |
| 英文摘要 | Abstract calvera is a unique isolated pulsar, because it cannot be detected by radio, optical, and gamma-rays; however, it is detectable through the purely thermal emission in soft x-rays. it is suggested that calvera could be an ordinary middle-aged pulsar with significant magnetospheric activity at a large distance. alternatively, it is proposed in this paper that calvera is a low-mass strangeon star with an inactive magnetosphere (dead). in this scenario, we jointly fit the spectra obtained by the xmm-newton observatory and the chandra x-ray observatory with the strangeon star atmosphere model. the spectral model is successful in explaining the radiation properties of calvera and x-ray dim isolated neutron stars, both of which show similar observation features. within the dead pulsar picture, calvera might have a high temperature at , possess a small stellar radius, , presumably have a small magnetic field, , and is probably braked by the fallback disk accretion. future advanced facilities may provide unique opportunities to understand the real nature of calvera. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-854-2-AAA671 |
| 出版者 | The American Astronomical Society |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175752 |
| 专题 | 高能物理研究所 |
| 作者单位 | 1.School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China; liyunyang@pku.edu.cn 2.Key Laboratory of Computational Astrophysics, National Astronomical Observatories, CAS, Beijing 100012, People's Republic of China 3.School of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 4.Key Laboratory for Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China 5.School of Physics and Space Science, China West Normal University, Nanchong 637002, People's Republic of China 6.School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, People's Republic of China 7.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China |
| 推荐引用方式 GB/T 7714 | Li,Yunyang,Wang,Weiyang,Ge,Mingyu,et al. Calvera: a low-mass strangeon star torqued by debris disk?[J]. The astrophysical journal,2018,854(2). |
| APA | Li,Yunyang,Wang,Weiyang,Ge,Mingyu,Liu,Xiongwei,Tong,Hao,&Xu,Renxin.(2018).Calvera: a low-mass strangeon star torqued by debris disk?.The astrophysical journal,854(2). |
| MLA | Li,Yunyang,et al."Calvera: a low-mass strangeon star torqued by debris disk?".The astrophysical journal 854.2(2018). |
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