Detection of a quasi-periodic oscillation in gamma-ray light curve of the high-redshift blazar B2 1520+31

doi:10.1093/mnras/stz395

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	Detection of a quasi-periodic oscillation in gamma-ray light curve of the high-redshift blazar B2 1520+31
	Gupta, Alok C.1; Tripathi, Ashutosh 2,3; Wiita, Paul J.4; Kushwaha, Pankaj 5; Zhang, Zhongli6 ; Bambi, Cosimo 2,3,7
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2019-04-01
卷号	484 期号:4 页码:5785-5790
关键词	radiation mechanisms: non-thermal galaxies: jets quasars: general quasars: individual: B2 1520+31 gamma-rays: galaxies
ISSN号	0035-8711
DOI	10.1093/mnras/stz395
英文摘要	We detected a possible quasi-periodic oscillation (QPO) of similar to 71 d in the 0.1-300 GeV gamma-ray Fermi-Large Area Telescope light curve of the high-redshift flat spectrum radio quasar B2 1520+31. We identify and confirm that quasi-period by Lomb-Scargle periodogram and weighted wavelet Z-transform analyses. Using this QPO period, and assuming it originates from accretion disc fluctuations at the innermost stable circular orbit, we estimate the central supermassive black hole mass to range between similar to 5.4 x 10(9) M-circle dot for a non-rotating black hole and similar to 3.4 x 10(10) M-circle dot for a maximally rotating black hole. We briefly discuss other possible radio-loud active galactic nuclei emission models capable of producing a gamma-ray QPO of such a period in a blazar.
资助项目	China Scholarship Council (CSC)[2016GXZR89] ; FAPESP[2015/13933-0] ; CAS Hundred-Talented program[Y787081009] ; National Natural Science Foundation of China[U1531117] ; Fudan University[IDH1512060] ; Alexander von Humboldt Foundation
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000462414400092
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/31863]
专题	中国科学院上海天文台
通讯作者	Gupta, Alok C.; Tripathi, Ashutosh; Wiita, Paul J.
作者单位	1.Aryabhatta Res Inst Observat Sci, ARIES, Naini Tal 263001, India 2.Fudan Univ, Ctr Field Theory & Particle Phys, 220 Handan Rd, Shanghai 200433, Peoples R China 3.Fudan Univ, Dept Phys, 220 Handan Rd, Shanghai 200433, Peoples R China 4.Coll New Jersey, Dept Phys, POB 7718, Ewing, NJ 08628 USA 5.Univ Sao Paulo, Dept Astron, IAG, BR-05508090 Sao Paulo, Brazil 6.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 7.Eberhard Karls Univ Tubingen, Theoret Astrophys, D-72076 Tubingen, Germany
推荐引用方式 GB/T 7714	Gupta, Alok C.,Tripathi, Ashutosh,Wiita, Paul J.,et al. Detection of a quasi-periodic oscillation in gamma-ray light curve of the high-redshift blazar B2 1520+31[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,484(4):5785-5790.
APA	Gupta, Alok C.,Tripathi, Ashutosh,Wiita, Paul J.,Kushwaha, Pankaj,Zhang, Zhongli,&Bambi, Cosimo.(2019).Detection of a quasi-periodic oscillation in gamma-ray light curve of the high-redshift blazar B2 1520+31.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,484(4),5785-5790.
MLA	Gupta, Alok C.,et al."Detection of a quasi-periodic oscillation in gamma-ray light curve of the high-redshift blazar B2 1520+31".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 484.4(2019):5785-5790.