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| Equation of state and surface thermal emission of magnetized white dwarfs | |
Gao, Zhi Fu1,2 ; Wang, Hui3; Zhao, Xin Jun2,6; Yang, Xiao Feng1,4,5
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| 2023-01 | |
| Source Publication | ASTRONOMISCHE NACHRICHTEN
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| ISSN | 0004-6337 |
| Volume | 344Issue:1-2Pages:e220112 |
| Contribution Rank | 1 |
| Abstract | 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. |
| Keyword | equation of state magnetized white dwarf magneto-thermal evolution Ohmic dissipation |
| DOI | 10.1002/asna.20220112 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | FIELD ; EVOLUTION ; STARS |
| Funding Project | Chinese National Science Foundation[12041304] ; CAS Pioneer Hundred Talents Program |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000903870100001 |
| Publisher | WILEY-V C H VERLAG GMBH |
| Funding Organization | Chinese National Science Foundation ; CAS Pioneer Hundred Talents Program |
| Conference Name | 10th International Workshop on Astronomy and Relativistic Astrophysics: from Quarks to Cosmos |
| Conference Place | Hotel Soleil La Antigua, Antigua Guatemala, Guatemala |
| Conference Date | 5-9 September 2022 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5000 |
| Collection | 射电天文研究室_脉冲星研究团组 射电天文研究室_星系宇宙学研究团组 |
| Corresponding Author | Zhao, Xin Jun |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, Xinjiang, Peoples R China 2.Yili Normal Univ, Coll Phys Sci & Technol, Xinjiang Lab Phase Transit & Microstruct Condensed, Yining, Xinjiang, Peoples R China 3.Yuncheng Univ, Dept Phys & Elect Engn, Yuncheng, Peoples R China 4.Univ Roma La Sapienza, ICRA & Dipartimento Fis, Rome, Italy 5.Int Ctr Relativist Astrophys Network, Piazza Repubbl 10, Pescara, Italy 6.Yili Normal Univ, Coll Phys Sci & Technol, Xinjiang Labortory Phase Transit & Microstruct Con, Yining 835000, Xinjiang, Peoples R China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation 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,2023,344(1-2):e220112. |
| APA | Gao, Zhi Fu,Wang, Hui,Zhao, Xin Jun,&Yang, Xiao Feng.(2023).Equation of state and surface thermal emission of magnetized white dwarfs.ASTRONOMISCHE NACHRICHTEN,344(1-2),e220112. |
| MLA | Gao, Zhi Fu,et al."Equation of state and surface thermal emission of magnetized white dwarfs".ASTRONOMISCHE NACHRICHTEN 344.1-2(2023):e220112. |
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| Gao-2023-Equation of（1864KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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