Possible Quasiperiodic Oscillation Signals in the Unique Event of GRB 250702DBE/EP250702a?
文献类型：期刊论文
| 作者 | Song, Fei-Fan1,4; Mao, Jirong1,2,3 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2025-11-20 |
| 卷号 | 994期号:1页码:11 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae129e |
| 通讯作者 | Mao, Jirong(jirongmao@mail.ynao.ac.cn) |
| 英文摘要 | GRB 250702DBE was time consequently triggered by the Gamma-ray Burst Monitor (GBM) on board the Fermi satellite. It is uncertain which celestial catalog is suitable for this special ultralong event to belong to. In this paper, we comprehensively investigate the lightcurves obtained by Fermi GBM detectors. In the energy band of 8-1000 keV, no quasiperiodic oscillation (QPO) signals are found in the lightcurve of the first burst 250702D, a possible QPO signal of 0.046 Hz corresponding to a period of 21.7 s is found in the lightcurve of the second burst 250702B, and a possible QPO signal of 0.024 Hz corresponding to a period of 41.7 s is found in the lightcurve of last burst 250702E. The significance level of the possible QPO signals is comprehensively examined. In addition, we examine the spectral properties of the sources. In general, a broken power law is suitable for modeling the spectral data from 8 keV to 40 MeV. We qualitatively suggest some kinds of celestial object with the periodic characteristic that might be the progenitors of this unique event. |
| WOS关键词 | GAMMA-RAY BURST ; TIDAL DISRUPTION EVENTS ; CATALOG |
| 资助项目 | the National Key R&D program of China[2023YFE0101200] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001613433400001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | the National Key R&D program of China |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28760]  |
| 专题 | 云南天文台_中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Mao, Jirong |
| 作者单位 | 1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China 2.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China 3.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Fei-Fan,Mao, Jirong. Possible Quasiperiodic Oscillation Signals in the Unique Event of GRB 250702DBE/EP250702a?[J]. ASTROPHYSICAL JOURNAL,2025,994(1):11. |
| APA | Song, Fei-Fan,&Mao, Jirong.(2025).Possible Quasiperiodic Oscillation Signals in the Unique Event of GRB 250702DBE/EP250702a?.ASTROPHYSICAL JOURNAL,994(1),11. |
| MLA | Song, Fei-Fan,et al."Possible Quasiperiodic Oscillation Signals in the Unique Event of GRB 250702DBE/EP250702a?".ASTROPHYSICAL JOURNAL 994.1(2025):11. |
入库方式： OAI收割
来源：云南天文台
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