Location of gamma-ray flaring region in quasar 4C+21.35

	Location of gamma-ray flaring region in quasar 4C+21.35
	Lei MC(雷买昌)1,2 ; Wang JC(王建成)1,2
刊名	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2015-08
卷号	67 期号:4
关键词	galaxies: active gamma rays: general quasars: individual (4C+21.35) radiation mechanisms: non-thermal
ISSN号	0004-6264
通讯作者	Lei, MC (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	4C+21.35 is a flat-spectrum-radio-quasar-type blazar, in which the rapid variability of very high energy (VHE, E-gamma greater than or similar to 100 GeV) emission as short as similar to 10 min was observed by MAGIC Cherenkov telescopes, and the VHE spectrum extends up to at least 400 GeV. In this paper, by using a flat broad-line region (BLR) structure, we study the location and properties of the gamma-ray-emitting region of 4C+21.35 under the constraints of multiwavelength data. We fit three quasi-simultaneous spectral energy distributions using a homogeneous one-zone leptonic model, in which a flat BLR with aperture angle alpha = 25 degrees and a spherically symmetric hot dusty torus with a temperature of T-sub = 1200 K are assumed. The results show that the jet structure of 4C+21.35 is nearly conical with a half-opening angle of theta(j) similar or equal to 0 degrees.29-0 degrees.6. Furthermore, the emitting region is located within the BLR clouds and approaches the outer radius of the BLR during the flaring states, while it is well beyond the dusty torus in quiescent state. The quiescent high-energy emission is dominated by the synchrotron self-Compton process, the high-energy emission during the flaring periods is dominated by Compton scattering of BLR and dusty torus photons with a value of the Compton-dominance parameter of about 30. Moreover, the fit to optical/ultraviolet data provides further support that the central black hole mass of 4C+21.35 is 6x10(8) M-circle dot.
学科主题	Astronomy & Astrophysics
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 OBJECTS ; ACTIVE GALACTIC NUCLEI ; HIGH-ENERGY EMISSION ; BROAD-LINE REGION ; BLACK-HOLE MASS ; PKS 1222+216 ; RELATIVISTIC JETS ; COMPTON ANALYSIS ; HOT DUST ; BLAZARS
收录类别	SCI
原文出处	http://pasj.oxfordjournals.org/content/67/4/79
语种	英语
WOS记录号	WOS:000359649800023
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5044]
专题	云南天文台_高能天体物理研究组云南天文台_中国科学院天体结构与演化重点实验室
作者单位	1.Yunnan Observatory, 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
推荐引用方式 GB/T 7714	Lei MC,Wang JC. Location of gamma-ray flaring region in quasar 4C+21.35[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2015,67(4).
APA	Lei MC,&Wang JC.(2015).Location of gamma-ray flaring region in quasar 4C+21.35.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,67(4).
MLA	Lei MC,et al."Location of gamma-ray flaring region in quasar 4C+21.35".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 67.4(2015).