Equation of state and surface thermal emission of magnetized white dwarfs
文献类型：期刊论文
| 作者 | Gao, Zhi Fu5,6 ; Wang, Hui4; Zhao, Xin Jun1,5; Yang, Xiao Feng2,3,6
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| 刊名 | ASTRONOMISCHE NACHRICHTEN
 |
| 出版日期 | 2022-12-25 |
| 页码 | 9 |
| 关键词 | equation of state magnetized white dwarf magneto-thermal evolution Ohmic dissipation |
| ISSN号 | 0004-6337 |
| DOI | 10.1002/asna.20220112 |
| 通讯作者 | Zhao, Xin Jun(zhaoxinjunzxj@163.com) |
| 英文摘要 | The observation and theoretical study of massive magnetized white dwarfs is one of the most important topics in the field of astronomy. This paper aims to obtain a coupled magneto-thermal evolution model of magnetized white dwarfs (B-WDs). As a fiducial model, we choose a non-magnetized WD with a baryonic mass M-0 = 1.37 M-? (M-? is the solar mass) for comparison with the magnetized cases. Firstly, we give an overview of the WD cooling, then study the equation of the state of a B-WD. We find that the WD mass increases with magnetic field strength B, while its radius decreases with B, and the minimum of B required to reach the Chandrasecka limit is about 3.2 x 10(14) G. Finally, by introducing the magnetic-to-thermal conversion coefficient xi, and taking the temperature effect on the stellar radius into consideration, we calculate the luminosities of thermal photons L-ph and surface effective temperature, T-eff due to Ohmic dissipation for B-WDs. According to our calculations, magnetic field decay can definitely maintain a long-term thermal evolution for massive B-WDs. This study will be useful for the study of internal thermal evolution and internal stability of B-WDs in the future. |
| WOS关键词 | FIELD ; EVOLUTION ; STARS |
| 资助项目 | Chinese National Science Foundation[12041304] ; CAS Pioneer Hundred Talents Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000903870100001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | Chinese National Science Foundation ; CAS Pioneer Hundred Talents Program |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/4999]  |
| 专题 | 脉冲星研究团组 星系宇宙学研究团组 |
| 通讯作者 | Zhao, Xin Jun |
| 作者单位 | 1.Yili Normal Univ, Coll Phys Sci & Technol, Xinjiang Labortory Phase Transit & Microstruct Con, Yining 835000, Xinjiang, Peoples R China 2.Int Ctr Relativist Astrophys Network, Piazza Repubbl 10, Pescara, Italy 3.Univ Roma La Sapienza, ICRA & Dipartimento Fis, Rome, Italy 4.Yuncheng Univ, Dept Phys & Elect Engn, Yuncheng, Peoples R China 5.Yili Normal Univ, Coll Phys Sci & Technol, Xinjiang Lab Phase Transit & Microstruct Condensed, Yining, Xinjiang, Peoples R China 6.Chinese Acad Sci, Xinjiang Astron Observ, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Zhi Fu,Wang, Hui,Zhao, Xin Jun,et al. Equation of state and surface thermal emission of magnetized white dwarfs[J]. ASTRONOMISCHE NACHRICHTEN,2022:9. |
| APA | Gao, Zhi Fu,Wang, Hui,Zhao, Xin Jun,&Yang, Xiao Feng.(2022).Equation of state and surface thermal emission of magnetized white dwarfs.ASTRONOMISCHE NACHRICHTEN,9. |
| MLA | Gao, Zhi Fu,et al."Equation of state and surface thermal emission of magnetized white dwarfs".ASTRONOMISCHE NACHRICHTEN (2022):9. |
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来源：新疆天文台
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