Rapid optical flare in the extreme teraelectronvolt blazar 1ES 0229+200 on intraday timescales with the Transiting Exoplanet Survey Satellite
文献类型：期刊论文
| 作者 | Kishore, S.1,2; Gupta, A. C.1,3; Wiita, P. J.4; Tiwari, S. N.2 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2024-10-10 |
| 卷号 | 690页码:A223 |
| 关键词 | galaxies: active BL Lacertae objects: general BL Lacertae objects: individual: 1ES 0229+200 galaxies: jets |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202449888 |
| 产权排序 | 3 |
| 英文摘要 | Context. The extreme teraelectronvolt (TeV) blazar 1ES 0229+200 is a high-frequency-peaked BL Lacertae object. It has not shown intraday variability in extensive optical and X-ray observations, nor has it shown any significant variability on any measurable timescale in the 1-100 GeV energy range over a 14-year span; however, variations in the source flux around its average are present in the energy range above 200 GeV. Aims. We aim to search for intraday optical variability in 1ES 0229+200 as part of an ongoing project to search for variability and quasi-periodic oscillations in the high-cadence (2 min), nearly uniformly sampled optical light curves of blazars provided by the Transiting Exoplanet Survey Satellite (TESS). Methods. 1ES 0229+200 was monitored by TESS in its Sectors 42, 43, and 44. We analysed the data of all these three sectors both with the TESS-provided lightkurve software and the eleanor reduction pipeline. We detected a strong, essentially symmetric flare that lasted about 6 h in Sector 42. We fitted the flare's rising and declining phases to exponential functions. We also analysed the light curve of Sector 42 using the Lomb-Scargle periodogram (LSP) and continuous auto-regressive moving average (CARMA) methods. Results. The optical light curve of Sector 42 of the TESS observations displayed in the present work provides the first evidence of a strong, rapid, short-lived optical flare on the intraday timescale in the TeV blazar 1ES 0229+200. The variability timescale of the flare provides the upper limit for the size of the emission region to be within (3.3 +/- 0.2-8.3 +/- 0.5)x10(15) cm. Away from the flare, the slope of the periodogram's power spectrum is fairly typical of many blazars (alpha < 2), but the nominal slopes for the flaring regions are very steep (alpha similar to 4.3), which may indicate that the electron distribution undergoes a sudden change. We discuss possible emission mechanisms that could explain this substantial and rapid flare. |
| WOS关键词 | ACTIVE GALACTIC NUCLEI ; BL LACERTAE OBJECTS ; SPECTRAL VARIABILITY ; LIGHT CURVES ; OJ 287 ; POLARIZATION VARIABILITY ; TEV VARIABILITY ; RADIO ; MULTIWAVELENGTH ; FLUX |
| 资助项目 | NASA[NAS 526555] ; CAS Light of West China Program[2021-XBQNXZ-005] ; Xinjiang Tianshan Talents Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001336485200016 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | NASA ; CAS Light of West China Program ; Xinjiang Tianshan Talents Program |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7083]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Kishore, S.; Gupta, A. C.; Wiita, P. J. |
| 作者单位 | 1.Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263001, India 2.DDU Gorakhpur Univ, Dept Phys, Gorakhpur 273009, India 3.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 4.Coll New Jersey, Dept Phys, 2000 Pennington Rd, Ewing, NJ 08628 USA |
| 推荐引用方式 GB/T 7714 | Kishore, S.,Gupta, A. C.,Wiita, P. J.,et al. Rapid optical flare in the extreme teraelectronvolt blazar 1ES 0229+200 on intraday timescales with the Transiting Exoplanet Survey Satellite[J]. ASTRONOMY & ASTROPHYSICS,2024,690:A223. |
| APA | Kishore, S.,Gupta, A. C.,Wiita, P. J.,&Tiwari, S. N..(2024).Rapid optical flare in the extreme teraelectronvolt blazar 1ES 0229+200 on intraday timescales with the Transiting Exoplanet Survey Satellite.ASTRONOMY & ASTROPHYSICS,690,A223. |
| MLA | Kishore, S.,et al."Rapid optical flare in the extreme teraelectronvolt blazar 1ES 0229+200 on intraday timescales with the Transiting Exoplanet Survey Satellite".ASTRONOMY & ASTROPHYSICS 690(2024):A223. |
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