Multiwavelength study of the pre-eruption dip in the recurrent nova T Coronae Borealis preceding imminent nova eruption
文献类型：期刊论文
| 作者 | Pei, Songpeng9; Zhang, Xiaowan9; Su, Renzhi4; Cai YZ(蔡永志)5,6,7; Ou, Ziwei8; Li, Qiang1,2; Ren, Xiaoqin1,2; Yang, Taozhi3; Li, Mingyue1,2 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2026-02-03 |
| 卷号 | 706 |
| 关键词 | accretion accretion disks binaries: symbiotic novae cataclysmic variables stars: individual: T CrB white dwarfs X-rays: binaries |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202557346 |
| 产权排序 | 第3完成单位 |
| 文献子类 | Article |
| 英文摘要 | We present a multiwavelength study of the symbiotic recurrent nova T Coronae Borealis (T CrB), using the Swift Burst Alert Telescope (BAT)/ X-Ray Telescope (XRT) / UltraViolet Optical Telescope (UVOT) and American Association of Variable Stars Observers (AAVSO) observations from 2005 to 2025. Our analysis spans quiescent, high, and pre-eruption dip states. We find that brightening amplitudes increase toward shorter wavelengths in both the optical and UV bands, while the UV and X-ray fluxes are generally anticorrelated throughout all phases. During the 2023-2024 pre-eruption dip, soft and hard X-rays increased as optical and UV brightness declined, consistent with a transition from an optically thick to an optically thin boundary layer driven by a reduction in the accretion rate. We also report, for the first time, a second, lower-amplitude dip occurring between September 2024 and February 2025 following the primary 2023-2024 pre-eruption dip. The observed variability supports an accretion-variation scenario as a unifying explanation for both the high and dip states and may signal an imminent nova eruption. |
| 学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| WOS关键词 | X-RAY-EMISSION ; SWIFT OBSERVATIONS ; BINARY PARAMETERS ; SYMBIOTIC STARS ; IA SUPERNOVAE ; WHITE-DWARFS ; CRB ; EVOLUTION ; STATE |
| 资助项目 | High-level Talents Research Start-up Fund Project of Liupanshui Normal University[LPSSYKYJJ202208]; Science and Technology Foundation of Guizhou Province; Science Research Project of University (Youth Project) of the Department of Education of Guizhou Province; Discipline-Team of Liupanshui Normal University[LPSSY2023XKTD11]; Liupanshui Science and Technology Development Project[52020-2024-PT-01]; Liupanshui Science and Technology Development Project[52020-2025-0-2-08]; Liupanshui Science and Technology Development Project[52020-2025-0-2-13]; National Natural Science Foundation of China[12303054]; National Natural Science Foundation of China[12393853]; National Natural Science Foundation of China[12003020]; National Key Research and Development Program of China[2024YFA1611603]; Yunnan Fundamental Research Projects[202401AU070063]; Yunnan Fundamental Research Projects[202501AS070078]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; Shaanxi Fundamental Science Research Project for Mathematics and Physics[23JSY015]; China Postdoctoral Science Foundation[2024M752979] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001681274600017 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | High-level Talents Research Start-up Fund Project of Liupanshui Normal University[LPSSYKYJJ202208] ; Science and Technology Foundation of Guizhou Province[[2023]442] ; Science Research Project of University (Youth Project) of the Department of Education of Guizhou Province[[2022]348] ; Discipline-Team of Liupanshui Normal University[LPSSY2023XKTD11] ; Liupanshui Science and Technology Development Project[52020-2024-PT-01, 52020-2025-0-2-08, 52020-2025-0-2-13] ; National Natural Science Foundation of China[12303054, 12393853, 12003020] ; National Key Research and Development Program of China[2024YFA1611603] ; Yunnan Fundamental Research Projects[202401AU070063, 202501AS070078] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; Shaanxi Fundamental Science Research Project for Mathematics and Physics[23JSY015] ; China Postdoctoral Science Foundation[2024M752979] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28934]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 通讯作者 | Pei, Songpeng |
| 作者单位 | 1.School of Physics and Electronic Science, Qiannan Normal University for Nationalities Duyun 558000, China; 2.Qiannan Key Laboratory of Radio Astronomy, Guizhou Province Duyun 558000, China; 3.Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi’an Jiaotong University 710049 Xi’an, China 4.Shanghai Astronomical Observatory, Chinese Academy of Sciences 80 Nandan Road Shanghai 200030, China; 5.Yunnan Observatories, Chinese Academy of Sciences Kunming 650216, China; 6.International Centre of Supernovae, Yunnan Key Laboratory Kunming 650216, China; 7.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences Kunming 650216, China; 8.Tsung-Dao Lee Institute, Shanghai Jiao Tong University Shanghai 201210, China; 9.School of Physics and Electrical Engineering, Liupanshui Normal University, Liupanshui Guizhou 553004, China; |
| 推荐引用方式 GB/T 7714 | Pei, Songpeng,Zhang, Xiaowan,Su, Renzhi,et al. Multiwavelength study of the pre-eruption dip in the recurrent nova T Coronae Borealis preceding imminent nova eruption[J]. ASTRONOMY & ASTROPHYSICS,2026,706. |
| APA | Pei, Songpeng.,Zhang, Xiaowan.,Su, Renzhi.,蔡永志.,Ou, Ziwei.,...&Li, Mingyue.(2026).Multiwavelength study of the pre-eruption dip in the recurrent nova T Coronae Borealis preceding imminent nova eruption.ASTRONOMY & ASTROPHYSICS,706. |
| MLA | Pei, Songpeng,et al."Multiwavelength study of the pre-eruption dip in the recurrent nova T Coronae Borealis preceding imminent nova eruption".ASTRONOMY & ASTROPHYSICS 706(2026). |
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来源：云南天文台
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