On the origin of the soft photons of the high-synchrotron-peaked blazar PKS 1424+240

doi:10.1093/mnras/stw1312

CORC > 上海天文台 > 中国科学院上海天文台

	On the origin of the soft photons of the high-synchrotron-peaked blazar PKS 1424+240
	Kang, Shi-Ju 1,4; Zheng, Yong-Gang 3; Wu, Qingwen 4; Chen, Liang 2
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016-09-11
卷号	461 期号:2 页码:1862-1867
关键词	Radiation Mechanisms: Non-thermal Bl Lacertae Objects: Individual: Pks 1424+240 (Ver j1427+23) Galaxies: Jets Gamma-rays: Galaxies
ISSN号	0035-8711
DOI	10.1093/mnras/stw1312
英文摘要	PKS 1424+240 is a distant very-high-energy gamma-ray BL Lac object with redshift z = 0.601. It has been found that models utilizing pure synchrotron self-Compton (SSC) processes normally need extreme input parameters (e.g. a very low magnetic field intensity and an extraordinarily high Doppler factor) to explain this particular object spectral energy distributions (SEDs). In order to avoid these extreme model parameters, various other models have been proposed (e.g. the two-zone SSC model or lepto-hadronic model). In this work, we employ the traditional one-zone leptonic model after including a weak external Compton component in order to explore the simultaneous multiwavelength SEDs of PKS 1424+240 in both the high (2009) and the low (2013) state. We find that the input parameters of the magnetic field and Doppler factor are roughly consistent with those of other BL Lacs if a weak external photon field from either the broad line region (BLR) or the dust torus is assumed. However, the required energy density of seed photons from the BLR or torus is about three orders of magnitude lower than that the energy density estimated from the observations in luminous quasars (e.g. flat-spectrum radio quasars, FSRQs). This result suggests that the BLR/torus in BL Lacs is much weaker than that of luminous FSRQs (but has not fully disappeared), and that the inverse-Compton process of external photons from the BLR/torus may still play a role even in high-synchrotron-peaked blazars.
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000383273600052
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32781]
专题	中国科学院上海天文台
通讯作者	Wu, Qingwen
作者单位	1.Liupanshui Normal Univ, Dept Phys & Elect Sci, Liupanshui 553004, Guizhou, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China 3.Yunnan Normal Univ, Dept Phys, Kunming 650092, Yunnan, Peoples R China 4.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Kang, Shi-Ju,Zheng, Yong-Gang,Wu, Qingwen,et al. On the origin of the soft photons of the high-synchrotron-peaked blazar PKS 1424+240[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,461(2):1862-1867.
APA	Kang, Shi-Ju,Zheng, Yong-Gang,Wu, Qingwen,&Chen, Liang.(2016).On the origin of the soft photons of the high-synchrotron-peaked blazar PKS 1424+240.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,461(2),1862-1867.
MLA	Kang, Shi-Ju,et al."On the origin of the soft photons of the high-synchrotron-peaked blazar PKS 1424+240".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 461.2(2016):1862-1867.