The spectral energy distribution of AO 0235+164 during two active optical phases
文献类型：期刊论文
| 作者 | Chen, YJ; Jiang, DR |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2001-09-01 |
| 卷号 | 376期号:1页码:69-76 |
| 关键词 | galaxies : active galaxies : BL Lacertae objects : individual : AO 0235+164 radiation mechanisms : non-thermal |
| 英文摘要 | We investigate the spectral variability of the source AO 0235+164 during two active phases. We find that the peak frequencies in the Spectral Energy Distributions (SED) are variable with time within a range of an order of magnitude, which does not cause the source to make a transition from Low-energy peaked BL Lac objects to High-energy peaked BL Lac objects. The correlation of peak frequency and peak flux either for an individual outburst or the combination of several individual outbursts is significant. Our research reveals that in many physical properties AO 0235+164 is much closer to at-spectrum radio quasars, rather than to High-energy peaked BL Lacs, which in turn implies that Comptonization of external radiation may play quite an important role in gamma -ray emission. There are indications that the observed variability may be due to superposition of intrinsic and propagation effects, which is in agreement with the conclusion of Kraus et al. (1999). We also explore the possible origin of the two outbursts and suggest that intrinsic variability, not including the shock effect, probably accounts for the two outbursts. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | BL-LACERTAE OBJECT ; EXTRAGALACTIC RADIO-SOURCES ; X-RAY ; BLAZARS ; VARIABILITY ; MODELS ; AO-0235+164 ; EMISSION ; PHOTOMETRY ; FREQUENCY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000170646600012 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12357]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, YJ,Jiang, DR. The spectral energy distribution of AO 0235+164 during two active optical phases[J]. ASTRONOMY & ASTROPHYSICS,2001,376(1):69-76. |
| APA | Chen, YJ,&Jiang, DR.(2001).The spectral energy distribution of AO 0235+164 during two active optical phases.ASTRONOMY & ASTROPHYSICS,376(1),69-76. |
| MLA | Chen, YJ,et al."The spectral energy distribution of AO 0235+164 during two active optical phases".ASTRONOMY & ASTROPHYSICS 376.1(2001):69-76. |
入库方式： OAI收割
来源：上海天文台
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