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Exploring the origin of broad-band emissions of Mrk 501 with a two-zone model
Lei MC(雷买昌)1,2,3; Yang CY(杨初源)1,2,3; Wang JC(王建成)1,2,3; Yang XL(杨晓林)1,2,3; Lei MC(雷买昌), Email: maichanglei83@ynao.ac.cn
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2018-06-01
卷号70期号:3
DOI10.1093/pasj/psy035
产权排序第1完成单位
收录类别SCI
关键词Bl Lacertae Objects: Individual (Markarian 501) Galaxies: Active Galaxies: Jets Radiation Mechanisms: General
摘要We propose a two-zone synchrotron self-Compton (SSC) model, including an inner gamma-ray emitting region with spherical shape and a conical radio emitting region located at the extended jet, to alleviate the long-standing "bulk Lorentz factor crisis" in blazars. In this model, the spectral energy distributions (SEDs) of blazars are produced by considering the gamma-ray emitting region inverse Compton scattering of both the synchrotron photons itself and the ambient photons from the radio emitting region. Applying the model to Mrk 501, we obtain that the radio emitting region has a comoving length of similar to 0.15 pc and is located at sub-parsec scale from the central engine by modeling the radio data; the flux of the Compton scattering of the ambient photons is so low that it can be neglected safely. The characteristic hard gamma-ray spectrum can be explained by the superposition of two SSC processes, and the model can approximately explain the very high energy (VHE) data. The insights into the spectral shape and the inter-band correlations under the flaring state will provide us with a diagnostic for the bulk Lorentz factor of radio emitting region, where the low and upper limits of 8 and 15 are preferred, and for the two-zone SSC model itself. In addition, our two-zone SSC model shows that the gamma-ray emitting region creates flare on the timescale of merely a few hours, and the long time outbursts more likely originate from the extended radio emitting region.
项目资助者National Natural Science Foundation of China(11661161010, 11573060, 11673060) ; Strategic Priority Research Program, the Emergence of Cosmological Structures of the Chinese Academy of Sciences(XDB09000000)
语种英语
学科领域天文学
文章类型Article
ISSN0004-6264
URL查看原文
WOS记录号WOS:000439655600016
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]BL-LACERTAE OBJECTS ; ACTIVE GALACTIC NUCLEI ; SELF-COMPTON MODEL ; GAMMA-RAY EMISSION ; TEV BLAZARS ; LAC OBJECTS ; JET MODEL ; BACKGROUND-RADIATION ; ENERGY-DISTRIBUTIONS ; BRIGHT BLAZARS
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/17386
专题高能天体物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Lei MC(雷买昌), Email: maichanglei83@ynao.ac.cn
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China
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Lei MC,Yang CY,Wang JC,et al. Exploring the origin of broad-band emissions of Mrk 501 with a two-zone model[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2018,70(3).
APA Lei MC,Yang CY,Wang JC,Yang XL,&Lei MC.(2018).Exploring the origin of broad-band emissions of Mrk 501 with a two-zone model.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,70(3).
MLA Lei MC,et al."Exploring the origin of broad-band emissions of Mrk 501 with a two-zone model".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 70.3(2018).
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