Triggering the Untriggered: The First Einstein Probe-detected Gamma-Ray Burst 240219A and Its Implications
文献类型：期刊论文
| 作者 | Yin, Yi-Han Iris26,27; Zhang, Bin-Bin25,26,27; Yang, Jun26,27 ; Sun, Hui24; Zhang, Chen24; Shao, Yi-Xuan26,27; Hu, You-Dong23; Zhu, Zi-Pei24; Xu, Dong24; An, Li21,22
|
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 975期号:2页码:L27 |
| ISSN号 | 2041-8205 |
| DOI | 10.3847/2041-8213/ad8652 |
| 产权排序 | 25 |
| 英文摘要 | The Einstein Probe (EP) achieved its first detection and localization of a bright X-ray flare, EP240219a, on 2024 February 19, during its commissioning phase. Subsequent targeted searches triggered by the EP240219a alert identified a faint, untriggered gamma-ray burst (GRB) in the archived data of Fermi Gamma-ray Burst Monitor (GBM), Swift Burst Alert Telescope (BAT), and Insight-HXMT/HE. The EP Wide-field X-ray Telescope (WXT) light curve reveals a long duration of approximately 160 s with a slow decay, whereas the Fermi/GBM light curve shows a total duration of approximately 70 s. The peak in the Fermi/GBM light curve occurs slightly later with respect to the peak seen in the EP/WXT light curve. Our spectral analysis shows that a single cutoff power-law (PL) model effectively describes the joint EP/WXT-Fermi/GBM spectra in general, indicating coherent broad emission typical of GRBs. The model yielded a photon index of similar to-1.70 +/- 0.05 and a peak energy of similar to 257 +/- 134 keV. After detection of GRB 240219A, long-term observations identified several candidates in optical and radio wavelengths, none of which was confirmed as the afterglow counterpart during subsequent optical and near-infrared follow-ups. The analysis of GRB 240219A classifies it as an X-ray-rich GRB (XRR) with a high peak energy, presenting both challenges and opportunities for studying the physical origins of X-ray flashes, XRRs, and classical GRBs. Furthermore, linking the cutoff PL component to nonthermal synchrotron radiation suggests that the burst is driven by a Poynting flux-dominated outflow. |
| WOS关键词 | FLASHES ; MAGNETIZATION ; LUMINOSITY ; COMPONENTS ; EFFICIENT ; BEPPOSAX ; LAGS |
| 资助项目 | National Key Research and Development Programs of China[2022YFF0711404] ; National Key Research and Development Programs of China[2022SKA0130102] ; National Key Research and Development Programs of China[2021YFA0718500] ; National SKA Program of China[2022SKA0130100] ; National Natural Science Foundation of China[11833003] ; National Natural Science Foundation of China[U2038105] ; National Natural Science Foundation of China[U1831135] ; National Natural Science Foundation of China[12121003] ; National Natural Science Foundation of China[12393811] ; National Natural Science Foundation of China[13001106] ; China Manned Space Project[CMS-CSST-2021-B11] ; Fundamental Research Funds for the Central Universities[D050102] ; Fundamental Research Funds for the Central Universities[HA 1850/28-1] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001347485800001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | National Key Research and Development Programs of China ; National SKA Program of China ; National Natural Science Foundation of China ; China Manned Space Project ; Fundamental Research Funds for the Central Universities |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7120]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Zhang, Bin-Bin; Zhang, Chen |
| 作者单位 | 1.Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China 3.ESTEC, European Space Agcy, Keplerlaan 1, NL-2201 AZ Noordwijk, Netherlands 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 5.Univ Copenhagen, Niels Bohr Inst, DK-2200 Copenhagen, Denmark 6.Cosm Dawn Ctr DAWN, DK-2200 Copenhagen, Denmark 7.Radboud Univ Nijmegen, Dept Astrophys, IMAPP, NL-6500 GL Nijmegen, Netherlands 8.INAF, Via Parco del Mellini, Rome, Italy 9.Univ RomeTor Vergata, Dept Phys, Via Ric Sci 1, I-00133 Rome, Italy 10.Univ Leicester, Sch Phys & Astron, Univ Rd, Leicester LE1 7RH, England |
| 推荐引用方式 GB/T 7714 | Yin, Yi-Han Iris,Zhang, Bin-Bin,Yang, Jun,et al. Triggering the Untriggered: The First Einstein Probe-detected Gamma-Ray Burst 240219A and Its Implications[J]. ASTROPHYSICAL JOURNAL LETTERS,2024,975(2):L27. |
| APA | Yin, Yi-Han Iris.,Zhang, Bin-Bin.,Yang, Jun.,Sun, Hui.,Zhang, Chen.,...&Zhang, Shuang-Nan.(2024).Triggering the Untriggered: The First Einstein Probe-detected Gamma-Ray Burst 240219A and Its Implications.ASTROPHYSICAL JOURNAL LETTERS,975(2),L27. |
| MLA | Yin, Yi-Han Iris,et al."Triggering the Untriggered: The First Einstein Probe-detected Gamma-Ray Burst 240219A and Its Implications".ASTROPHYSICAL JOURNAL LETTERS 975.2(2024):L27. |
入库方式： OAI收割
来源：新疆天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。