Photospheric Radius Evolution of Homologous Explosions
文献类型：期刊论文
| 作者 | Liu, LD; Zhang, B ; Wang, LJ; Dai, ZG; Liu, Liang-Duan, Zhang, Bing, Wang, Ling-Jun; Dai, Zi-Gao; Wang LJ(王灵俊)
|
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2018 |
| 卷号 | 868期号:2页码:L24 |
| 关键词 | opacity supernovae: general |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/aaeff6 |
| 文献子类 | Article |
| 英文摘要 | Recent wide-field surveys discovered new types of peculiar optical transients that showed diverse behaviors of the evolution of photospheric properties. We develop a general theory of homologous explosions with constant opacity, paying special attention to the evolution of the photospheric radius R-ph. We find that regardless of the density distribution profile, R-ph always increases early on and decreases at late times. This result does not depend on the radiation and cooling processes inside the ejecta. The general rising/falling behavior of R-ph can be used to quickly diagnose whether the source originates from a supernova-like explosion. The shape of the R-ph evolution curve depends on the density profile, so the observations may be used to directly diagnose the density profile as well as the temperature profile of the ejecta. All of the well-monitored supernovae show such a R-ph rising/falling behavior, which is consistent with our theory. The recently discovered peculiar transient AT 2018cow showed a continuous decay of R-ph, for which a supernova-like explosion origin is disfavored. Our result therefore supports the interpretation of this transient as a tidal disruption event. |
| 电子版国际标准刊号 | 2041-8213 |
| WOS关键词 | ANALYTIC SOLUTIONS ; LIGHT CURVES ; SUPER-NOVAE ; TRANSIENTS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000451002200001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286990]  |
| 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 | Liu, LD,Zhang, B,Wang, LJ,et al. Photospheric Radius Evolution of Homologous Explosions[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,868(2):L24. |
| APA | Liu, LD.,Zhang, B.,Wang, LJ.,Dai, ZG.,Liu, Liang-Duan, Zhang, Bing, Wang, Ling-Jun.,...&王灵俊.(2018).Photospheric Radius Evolution of Homologous Explosions.ASTROPHYSICAL JOURNAL LETTERS,868(2),L24. |
| MLA | Liu, LD,et al."Photospheric Radius Evolution of Homologous Explosions".ASTROPHYSICAL JOURNAL LETTERS 868.2(2018):L24. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。