LONG-TERM MONITORING OF THE TeV EMISSION FROM Mrk 421 WITH THE ARGO-YBJ EXPERIMENT
文献类型：期刊论文
| 作者 | ARGO-YBJ Collaboration |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2011 |
| 卷号 | 734期号:2 |
| 关键词 | BL-LAC OBJECTS ACTIVE GALAXY MARKARIAN-421 GAMMA-RAY OBSERVATION AIR-SHOWER ARRAY MULTIWAVELENGTH OBSERVATIONS CRAB-NEBULA CORRELATED VARIABILITY BLAZAR MARKARIAN-421 GALACTIC NUCLEI DETECTOR |
| 通讯作者 | Bartoli, B (reprint author), Univ Naples Federico II, Dipartimento Fis, Complesso Univ Monte St Angelo,Via Cinthia, I-80126 Naples, Italy. |
| 英文摘要 | ARGO-YBJ is an air shower detector array with a fully covered layer of resistive plate chambers. It is operated with a high duty cycle and a large field of view. It continuously monitors the northern sky at energies above 0.3 TeV. In this paper, we report a long-term monitoring of Mrk 421 over the period from 2007 November to 2010 February. This source was observed by the satellite-borne experiments Rossi X-ray Timing Explorer and Swift in the X-ray band. Mrk 421 was especially active in the first half of 2008. Many flares are observed in both X-ray and gamma-ray bands simultaneously. The gamma-ray flux observed by ARGO-YBJ has a clear correlation with the X-ray flux. No lag between the X-ray and gamma-ray photons longer than 1 day is found. The evolution of the spectral energy distribution is investigated by measuring spectral indices at four different flux levels. Hardening of the spectra is observed in both X-ray and gamma-ray bands. The gamma-ray flux increases quadratically with the simultaneously measured X-ray flux. All these observational results strongly favor the synchrotron self-Compton process as the underlying radiative mechanism. |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000291386500038 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213058]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | ARGO-YBJ Collaboration. LONG-TERM MONITORING OF THE TeV EMISSION FROM Mrk 421 WITH THE ARGO-YBJ EXPERIMENT[J]. ASTROPHYSICAL JOURNAL,2011,734(2). |
| APA | ARGO-YBJ Collaboration.(2011).LONG-TERM MONITORING OF THE TeV EMISSION FROM Mrk 421 WITH THE ARGO-YBJ EXPERIMENT.ASTROPHYSICAL JOURNAL,734(2). |
| MLA | ARGO-YBJ Collaboration."LONG-TERM MONITORING OF THE TeV EMISSION FROM Mrk 421 WITH THE ARGO-YBJ EXPERIMENT".ASTROPHYSICAL JOURNAL 734.2(2011). |
入库方式： OAI收割
来源：高能物理研究所
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