DISCOVERY OF γ-RAY EMISSION FROM THE RADIO-INTERMEDIATE QUASAR III ZW 2: VIOLENT JET ACTIVITY WITH INTRADAY γ-RAY VARIABILITY

doi:10.3847/0067-0049/226/2/17

	DISCOVERY OF γ-RAY EMISSION FROM THE RADIO-INTERMEDIATE QUASAR III ZW 2: VIOLENT JET ACTIVITY WITH INTRADAY γ-RAY VARIABILITY
	Liao,Neng-Hui 1; Xin,Yu-Liang 1,2; Fan,Xu-Liang 2,3; Weng,Shan-Shan 4; Li,Shao-Kun 3; Chen,Liang 5; Fan,Yi-Zhong 1
刊名	The Astrophysical Journal Supplement Series
	2016-10-12
卷号	226 期号:2
关键词	galaxies: active galaxies: jets quasars: individual (III Zw 2)
ISSN号	0067-0049
DOI	10.3847/0067-0049/226/2/17
英文摘要	ABSTRACT III Zw 2 is the prototype of radio-intermediate quasars. Although there is the evidence of possessing strong jet, significant γ-ray emission has not been reported before. In this work, we carry out a detailed analysis of the latest Fermi-LAT Pass?8 data. No significant γ-ray signal has been detected in the time-averaged 7-year Fermi-LAT data of III Zw 2; however, we have identified two distinct γ-ray flares with isotropic luminosities of ～1045 erg s?1. Multiwavelength data analysis (also including the optical photometric observations from Yunnan Observatories) are presented and the main finding is simultaneous optical and γ-ray flares of III Zw 2 appearing in 2009 November. Violent γ-ray variability with a doubling timescale of 2.5 hr was detected in another γ-ray flare in May 2010, for which the 3-hr γ-ray peak flux is ～250 times of the average flux in 7 years. Rather similar behaviors are observed in blazars and the blazar model can reasonably reproduce the spectral energy distribution of III Zw 2 in a wide energy range, strongly suggesting that its central engine resembles that of blazars. In view of its core, which shares radio similarities with young radio sources, together with weak extended radio lobe emission, we suggest that III Zw 2 harbors a recurrent activity core and thus serves as a valuable target for investigating the fueling and triggering of the activity in radio-loud active galactic nuclei.
语种	英语
出版者	The American Astronomical Society
WOS记录号	IOP:0067-0049-226-2-17
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/23746]
专题	中国科学院紫金山天文台
作者单位	1.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China; liaonh@pmo.ac.cn, yzfan@pmo.ac.cn 2.Graduate University of Chinese Academy of Sciences, Yuquan Road 19, Beijing 100049, China 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 4.Department of Physics, Nanjing Normal University, Nanjing 210046, China 5.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China
推荐引用方式 GB/T 7714	Liao,Neng-Hui,Xin,Yu-Liang,Fan,Xu-Liang,et al. DISCOVERY OF γ-RAY EMISSION FROM THE RADIO-INTERMEDIATE QUASAR III ZW 2: VIOLENT JET ACTIVITY WITH INTRADAY γ-RAY VARIABILITY[J]. The Astrophysical Journal Supplement Series,2016,226(2).
APA	Liao,Neng-Hui.,Xin,Yu-Liang.,Fan,Xu-Liang.,Weng,Shan-Shan.,Li,Shao-Kun.,...&Fan,Yi-Zhong.(2016).DISCOVERY OF γ-RAY EMISSION FROM THE RADIO-INTERMEDIATE QUASAR III ZW 2: VIOLENT JET ACTIVITY WITH INTRADAY γ-RAY VARIABILITY.The Astrophysical Journal Supplement Series,226(2).
MLA	Liao,Neng-Hui,et al."DISCOVERY OF γ-RAY EMISSION FROM THE RADIO-INTERMEDIATE QUASAR III ZW 2: VIOLENT JET ACTIVITY WITH INTRADAY γ-RAY VARIABILITY".The Astrophysical Journal Supplement Series 226.2(2016).