YNAO OpenIR  > 高能天体物理研究组
A Method for Locating a High-energy Dissipation Region in a Blazar
Yan DH(闫大海)1,2; Wu, Qingwen3; Fan, Xuliang3; Wang JC(王建成)1,2; Zhang, Li4
Source PublicationASTROPHYSICAL JOURNAL
2018-06-01
Volume859Issue:2
DOI10.3847/1538-4357/aac20a
Contribution Rank第1完成单位
Indexed BySCI
KeywordGalaxies: Jets Gamma Rays: Galaxies Radiation Mechanisms: Non-thermal
Abstract

The production site of gamma-rays in a blazar jet is an unresolved problem. We present a method to locate a gamma-ray emission region in the framework of a one-zone emission model. From measurements of the core-shift effect, the relation between the magnetic field strengths (B') in the radio cores of the jet and the distances (R) of these radio cores from the central supermassive black hole (SMBH) can be inferred. Therefore, once the magnetic field strength in the gamma-ray emission region (B-diss') is obtained, one can use the relation of B'-R to derive the distance (R-diss) of the gamma-ray emission region from the SMBH. Here, we evaluate the lower limit of B-diss' by using the criteria that the optical variability timescale t(var) should be longer than or equal to the synchrotron radiation cooling timescale of the electrons that emit optical photons. We test the method with the observations of PSK 1510-089 and BL Lacertae, and derive R-diss< 0.15 delta(1/3)(D)(1+ A)(2/3) pc for PSK 1510-089 with t(var) similar to a few hours and R-diss< 0.003 delta(1/3)(D)(1+ A)(2/3) pc for BL Lacertae with t(var) similar to a few minutes. Here, delta(D) is the Doppler factor and A is the Compton dominance (i.e., the ratio of the Compton to the synchrotron peak luminosities).

Funding ProjectNational Natural Science Foundation of China[NSFC-11573026] ; National Natural Science Foundation of China[NSFC-11573060] ; National Natural Science Foundation of China[NSFC-1161161010] ; National Natural Science Foundation of China[NSFC-11673060] ; National Natural Science Foundation of China[NSFC-U1738124] ; National Natural Science Foundation of China[NSFC-11622324] ; National Natural Science Foundation of China[NSFC-11573009] ; CAS "Light of West China" Program
Funding OrganizationNational Natural Science Foundation of China[NSFC-11573026, NSFC-11573060, NSFC-1161161010, NSFC-11673060, NSFC-U1738124, NSFC-11622324, NSFC-11573009] ; CAS "Light of West China" Program
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000434375800004
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSPECTRUM RADIO QUASARS ; ACTIVE GALACTIC NUCLEI ; GAMMA-RAY FLARES ; BL-LAC OBJECTS ; BRIGHT FERMI BLAZARS ; BROAD-LINE REGION ; 3C 279 ; RELATIVISTIC JETS ; MULTIWAVELENGTH OBSERVATIONS ; PHYSICAL-PROPERTIES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/12394
Collection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
Corresponding AuthorYan DH(闫大海)
Affiliation1.Key Laboratory for the Structure and Evolution of Celestial Objects, Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, People's Republic of China
3.School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
4.Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yan DH,Wu, Qingwen,Fan, Xuliang,et al. A Method for Locating a High-energy Dissipation Region in a Blazar[J]. ASTROPHYSICAL JOURNAL,2018,859(2).
APA Yan DH,Wu, Qingwen,Fan, Xuliang,Wang JC,&Zhang, Li.(2018).A Method for Locating a High-energy Dissipation Region in a Blazar.ASTROPHYSICAL JOURNAL,859(2).
MLA Yan DH,et al."A Method for Locating a High-energy Dissipation Region in a Blazar".ASTROPHYSICAL JOURNAL 859.2(2018).
Files in This Item:
File Name/Size DocType Version Access License
A Method for Locatin(286KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yan DH(闫大海)]'s Articles
[Wu, Qingwen]'s Articles
[Fan, Xuliang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yan DH(闫大海)]'s Articles
[Wu, Qingwen]'s Articles
[Fan, Xuliang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yan DH(闫大海)]'s Articles
[Wu, Qingwen]'s Articles
[Fan, Xuliang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: A Method for Locating a High-energy Dissipation Region in a Blazar.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.