Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations
ASASSN-14ko is a periodically repeating nuclear transient. We conducted high-cadence, multiwavelength observations of this source, revealing several recurrent early bumps and rebrightenings in its UV/optical light curves. The energy released during these bumps and rebrightenings shows a diminishing...
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/ade795 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849245559492182016 |
|---|---|
| author | Shifeng Huang Tinggui Wang Ning Jiang Rong-Feng Shen Zhaohao Chen Yuanming Wang Jiazheng Zhu Yibo Wang Yunguo Jiang Xinwen Shu Hucheng Ding Xiongjun Fang Yifan Wang Jie Lin Jingran Xu Xu Chen Zheyu Lin Zhenfeng Sheng |
| author_facet | Shifeng Huang Tinggui Wang Ning Jiang Rong-Feng Shen Zhaohao Chen Yuanming Wang Jiazheng Zhu Yibo Wang Yunguo Jiang Xinwen Shu Hucheng Ding Xiongjun Fang Yifan Wang Jie Lin Jingran Xu Xu Chen Zheyu Lin Zhenfeng Sheng |
| author_sort | Shifeng Huang |
| collection | DOAJ |
| description | ASASSN-14ko is a periodically repeating nuclear transient. We conducted high-cadence, multiwavelength observations of this source, revealing several recurrent early bumps and rebrightenings in its UV/optical light curves. The energy released during these bumps and rebrightenings shows a diminishing trend in recent UV/optical outbursts, which we monitored through multiwavelength observations. These features can be ascribed to the interaction between stream debris and the expanded disk in the repeated partial tidal disruption event. The X-ray light curve exhibits an inverse pattern compared to the UV/optical bands, displaying sporadic outbursts. Furthermore, our observations demonstrate that the blackbody temperature and radius in each outburst increase with the UV/optical luminosity, and such evolution resembles that observed in X-ray quasiperiodic eruptions, distinguishing it from typical tidal disruption events. |
| format | Article |
| id | doaj-art-e8f002ef3e2f457aabeea79925216ac7 |
| institution | Kabale University |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-e8f002ef3e2f457aabeea79925216ac72025-08-20T03:58:45ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01988223710.3847/1538-4357/ade795Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength ObservationsShifeng Huang0https://orcid.org/0000-0001-7689-6382Tinggui Wang1https://orcid.org/0000-0002-1517-6792Ning Jiang2https://orcid.org/0000-0002-7152-3621Rong-Feng Shen3https://orcid.org/0000-0001-5012-2362Zhaohao Chen4https://orcid.org/0009-0006-5497-8049Yuanming Wang5https://orcid.org/0000-0003-0203-1196Jiazheng Zhu6https://orcid.org/0000-0003-3824-9496Yibo Wang7https://orcid.org/0000-0003-4225-5442Yunguo Jiang8https://orcid.org/0000-0003-2679-0445Xinwen Shu9https://orcid.org/0000-0002-7020-4290Hucheng Ding10https://orcid.org/0009-0001-8733-2088Xiongjun Fang11https://orcid.org/0000-0002-4270-3332Yifan Wang12https://orcid.org/0000-0001-7142-7667Jie Lin13https://orcid.org/0000-0003-3965-6931Jingran Xu14https://orcid.org/0000-0003-2477-3430Xu Chen15https://orcid.org/0000-0001-5603-7521Zheyu Lin16https://orcid.org/0000-0003-4959-1625Zhenfeng Sheng17https://orcid.org/0000-0001-6938-8670Department of Astronomy, University of Science and Technology of China , Hefei, 230026, People’s Republic of China ; sfhuang999@ustc.edu.cn, twang@ustc.edu.cn, jnac@ustc.edu.cn; School of Astronomy and Space Sciences, University of Science and Technology of China , Hefei, 230026, People’s Republic of ChinaDepartment of Astronomy, University of Science and Technology of China , Hefei, 230026, People’s Republic of China ; sfhuang999@ustc.edu.cn, twang@ustc.edu.cn, jnac@ustc.edu.cn; School of Astronomy and Space Sciences, University of Science and Technology of China , Hefei, 230026, People’s Republic of ChinaDepartment of Astronomy, University of Science and Technology of China , Hefei, 230026, People’s Republic of China ; sfhuang999@ustc.edu.cn, twang@ustc.edu.cn, jnac@ustc.edu.cn; School of Astronomy and Space Sciences, University of Science and Technology of China , Hefei, 230026, People’s Republic of ChinaSchool of Physics and Astronomy, Sun Yat-sen University , Zhuhai 519082, People’s Republic of China; CSST Science Center for the Guangdong-Hong Kong-Macau Greater Bay Area, Sun Yat-sen University , Zhuhai 519082, People’s Republic of ChinaShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University , Weihai 264209, People’s Republic of ChinaCentre for Astrophysics and Supercomputing, Swinburne University of Technology , Hawthorn, Victoria, 3122, Australia; ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) , Hawthorn, Victoria, 3122, AustraliaDepartment of Astronomy, University of Science and Technology of China , Hefei, 230026, People’s Republic of China ; sfhuang999@ustc.edu.cn, twang@ustc.edu.cn, jnac@ustc.edu.cn; School of Astronomy and Space Sciences, University of Science and Technology of China , Hefei, 230026, People’s Republic of ChinaDepartment of Astronomy, University of Science and Technology of China , Hefei, 230026, People’s Republic of China ; sfhuang999@ustc.edu.cn, twang@ustc.edu.cn, jnac@ustc.edu.cn; School of Astronomy and Space Sciences, University of Science and Technology of China , Hefei, 230026, People’s Republic of ChinaShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University , Weihai 264209, People’s Republic of ChinaDepartment of Physics, Anhui Normal University , Wuhu, Anhui, 241002, People’s Republic of ChinaDepartment of Physics, Anhui Normal University , Wuhu, Anhui, 241002, People’s Republic of ChinaDepartment of Physics, Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Synergetic Innovation Center for Quantum Effects and Applications, Institute of Interdisciplinary Studies, Hunan Normal University , Changsha 410081, People’s Republic of ChinaCollege of Physics and Electronic Information, Dezhou University , Dezhou 253023, People’s Republic of ChinaDepartment of Astronomy, University of Science and Technology of China , Hefei, 230026, People’s Republic of China ; sfhuang999@ustc.edu.cn, twang@ustc.edu.cn, jnac@ustc.edu.cn; School of Astronomy and Space Sciences, University of Science and Technology of China , Hefei, 230026, People’s Republic of ChinaShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University , Weihai 264209, People’s Republic of ChinaShandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University , Weihai 264209, People’s Republic of ChinaDepartment of Astronomy, University of Science and Technology of China , Hefei, 230026, People’s Republic of China ; sfhuang999@ustc.edu.cn, twang@ustc.edu.cn, jnac@ustc.edu.cn; School of Astronomy and Space Sciences, University of Science and Technology of China , Hefei, 230026, People’s Republic of ChinaInstitute of Deep Space Sciences , Deep Space Exploration Laboratory, Hefei, 230026, People’s Republic of ChinaASASSN-14ko is a periodically repeating nuclear transient. We conducted high-cadence, multiwavelength observations of this source, revealing several recurrent early bumps and rebrightenings in its UV/optical light curves. The energy released during these bumps and rebrightenings shows a diminishing trend in recent UV/optical outbursts, which we monitored through multiwavelength observations. These features can be ascribed to the interaction between stream debris and the expanded disk in the repeated partial tidal disruption event. The X-ray light curve exhibits an inverse pattern compared to the UV/optical bands, displaying sporadic outbursts. Furthermore, our observations demonstrate that the blackbody temperature and radius in each outburst increase with the UV/optical luminosity, and such evolution resembles that observed in X-ray quasiperiodic eruptions, distinguishing it from typical tidal disruption events.https://doi.org/10.3847/1538-4357/ade795Tidal disruptionSupermassive black holesBlack hole physicsAccretion |
| spellingShingle | Shifeng Huang Tinggui Wang Ning Jiang Rong-Feng Shen Zhaohao Chen Yuanming Wang Jiazheng Zhu Yibo Wang Yunguo Jiang Xinwen Shu Hucheng Ding Xiongjun Fang Yifan Wang Jie Lin Jingran Xu Xu Chen Zheyu Lin Zhenfeng Sheng Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations The Astrophysical Journal Tidal disruption Supermassive black holes Black hole physics Accretion |
| title | Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations |
| title_full | Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations |
| title_fullStr | Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations |
| title_full_unstemmed | Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations |
| title_short | Unveiling the Cosmic Dance of Repeated Nuclear Transient ASASSN-14ko: Insights from Multiwavelength Observations |
| title_sort | unveiling the cosmic dance of repeated nuclear transient asassn 14ko insights from multiwavelength observations |
| topic | Tidal disruption Supermassive black holes Black hole physics Accretion |
| url | https://doi.org/10.3847/1538-4357/ade795 |
| work_keys_str_mv | AT shifenghuang unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT tingguiwang unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT ningjiang unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT rongfengshen unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT zhaohaochen unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT yuanmingwang unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT jiazhengzhu unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT yibowang unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT yunguojiang unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT xinwenshu unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT huchengding unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT xiongjunfang unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT yifanwang unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT jielin unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT jingranxu unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT xuchen unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT zheyulin unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations AT zhenfengsheng unveilingthecosmicdanceofrepeatednucleartransientasassn14koinsightsfrommultiwavelengthobservations |