Calvera: A Low-mass Strangeon Star Torqued by Debris Disk?
文献类型：期刊论文
| 作者 | Ge MY(葛明玉) ; Wang, WY; Li, YY; Xu, RX; Tong, H; Liu, XW; Ge, MY
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2018 |
| 卷号 | 854期号:2页码:165 |
| ISSN号 | 0004-637X |
| 关键词 | accretion, accretion disks pulsars: individual (Calvera1RXS J141256.0+792204) stars: neutron |
| DOI | 10.3847/1538-4357/aaa671 |
| 文献子类 | Article |
| 英文摘要 | Calvera is a unique 59 ms 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 0.67 keV, possess a small stellar radius, R less than or similar to 4 km, presumably have a small magnetic field, B less than or similar to 10(11) G, and is probably braked by the fallback disk accretion. Future advanced facilities may provide unique opportunities to understand the real nature of Calvera. |
| 电子版国际标准刊号 | 1538-4357 |
| WOS关键词 | ISOLATED NEUTRON-STARS ; X-RAY PULSARS ; 1RXS J141256.0+792204 CALVERA ; CENTRAL COMPACT OBJECTS ; SOFT GAMMA-REPEATERS ; LONG-TERM EVOLUTION ; MAGNETIC-FIELDS ; BLACK-HOLE ; SPIN-DOWN ; RADIO PULSARS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000425961400002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285669]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Ge MY,Wang, WY,Li, YY,et al. Calvera: A Low-mass Strangeon Star Torqued by Debris Disk?[J]. ASTROPHYSICAL JOURNAL,2018,854(2):165. |
| APA | 葛明玉.,Wang, WY.,Li, YY.,Xu, RX.,Tong, H.,...&Ge, MY.(2018).Calvera: A Low-mass Strangeon Star Torqued by Debris Disk?.ASTROPHYSICAL JOURNAL,854(2),165. |
| MLA | 葛明玉,et al."Calvera: A Low-mass Strangeon Star Torqued by Debris Disk?".ASTROPHYSICAL JOURNAL 854.2(2018):165. |
入库方式： OAI收割
来源：高能物理研究所
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