Peak of spectral energy distribution plays an important role in intra-day variability of blazars?
文献类型：期刊论文
| 作者 | Gupta, Alok C.1,2; Kalita, Nibedita2,3; Gaur, Haritma1; Duorah, Kalpana3 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2016-10-21 |
| 卷号 | 462期号:2页码:1508-1516 |
| 关键词 | Galaxies: Active Bl Lacertae Objects: General Bl Lacertae Objects: Individual: ... Galaxies: Jets Quasars: General |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stw1667 |
| 英文摘要 | Blazars can be divided into two sub-classes namely high energy and lowenergy peaked blazars. In spectral energy distribution, the first synchrotron hump of the former class peaks in UV/X-rays and in IR/optical bands for the latter class. The peak of the spectral energy distribution seems to be responsible for variability properties of these classes of blazars inX-ray and optical bands. Since, in low energy peaked blazars, the X-ray bands lies well below the synchrotron hump, one expects that the highest energy electrons available for the synchrotron emission would have slower effect of variability on X-ray intra-day time-scale. In this paper, by taking the advantage of a sample of 12 low energy peaked blazars with total 50 observations from XMM-Newton since its launch, we confirm that this class is less variable in X-ray bands. We found that out of 50 observational light curves, genuine intra-day variability is present in only two of light curves i.e 4 per cent. Similar results we obtained from our earlier optical intra-day variability studies of high energy peaked blazars where out of 144 light curves, only genuine intra-day variability was detected in 6 light curves i. e similar to 4 per cent. Since, X-ray bands lie below the peak of the spectral energy distribution of LSPs where inverse Compton mechanism is dominating rather than synchrotron radiation at the peak of the optical band, leads to slower variability in the X-ray bands. Hence, reducing their intra-day variability in X-ray bands as compared to the variability in optical bands. |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000384674100025 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://119.78.226.72/handle/331011/32747]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Gupta, Alok C.; Kalita, Nibedita; Gaur, Haritma |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China 2.Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263002, Uttarakhand, India 3.Gauhati Univ, Dept Phys, Gauhati 781014, Assam, India |
| 推荐引用方式 GB/T 7714 | Gupta, Alok C.,Kalita, Nibedita,Gaur, Haritma,et al. Peak of spectral energy distribution plays an important role in intra-day variability of blazars?[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,462(2):1508-1516. |
| APA | Gupta, Alok C.,Kalita, Nibedita,Gaur, Haritma,&Duorah, Kalpana.(2016).Peak of spectral energy distribution plays an important role in intra-day variability of blazars?.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,462(2),1508-1516. |
| MLA | Gupta, Alok C.,et al."Peak of spectral energy distribution plays an important role in intra-day variability of blazars?".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 462.2(2016):1508-1516. |
入库方式： OAI收割
来源：上海天文台
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。