IHEP OpenIR  > 粒子天体物理中心
RADIATION MECHANISMS AND PHYSICAL PROPERTIES OF GeV-TeV BL Lac OBJECTS
Zhang, J; Liang, EW; Zhang SN(张双南); Zhang, SN; Bai, JM
2012
发表期刊ASTROPHYSICAL JOURNAL
卷号752期号:2页码:157
摘要BL Lac objects are the best candidates to study the jet properties since their spectral energy distributions (SEDs) are less contaminated by the emission from the accretion disk and external Compton processes. We compile the broadband SEDs observed with Fermi/LAT and other instruments from literature for 24 TeV BL Lac objects. Two SEDs, which are identified as a low or high state according to its flux density at 1 TeV, are available for each of 10 objects. These SEDs can be explained well with the synchrotron+synchrotron-self-Compton model. We constrain the magnetic field strength (B) and the Doppler factor (delta) of the radiation region by incorporating the chi(2)-minimization technique and the gamma-ray transparency condition. Twenty-four out of the 34 SEDs can constrain B and delta in the 1 sigma significance level, and others only present the limits for both B and delta. The typical values of B and delta are 0.1-0.6 G and 10-35, respectively. The derived values of gamma(b) are significantly different among sources and even among the low and high states of a given source. Prominent flux variations with a clear spectral shift are observed, and a tentative correlation between the ratio of the flux density at 1 TeV and the ratio of gamma(b) in the low and high states is presented, likely indicating that the relativistic shocks for the electron acceleration may be responsible for the flux variations and the spectral shift. A weak anti-correlation between the jet power and the mass of the central black hole is observed, i.e., P-jet proportional to M-BH(-1), which disfavors the scenario of a pure accretion-driven jet. Implications for the blazar sequence and the intergalactic magnetic field from our results are also briefly discussed.
关键词BL Lacertae objects: general gamma rays: galaxies radiation mechanisms: non-thermal
学科领域Astronomy & Astrophysics
DOI10.1088/0004-637X/752/2/157
收录类别SCI
WOS记录号WOS:000305738000080
引用统计
被引频次:72[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224436
专题粒子天体物理中心
推荐引用方式
GB/T 7714
Zhang, J,Liang, EW,Zhang SN,et al. RADIATION MECHANISMS AND PHYSICAL PROPERTIES OF GeV-TeV BL Lac OBJECTS[J]. ASTROPHYSICAL JOURNAL,2012,752(2):157.
APA Zhang, J,Liang, EW,张双南,Zhang, SN,&Bai, JM.(2012).RADIATION MECHANISMS AND PHYSICAL PROPERTIES OF GeV-TeV BL Lac OBJECTS.ASTROPHYSICAL JOURNAL,752(2),157.
MLA Zhang, J,et al."RADIATION MECHANISMS AND PHYSICAL PROPERTIES OF GeV-TeV BL Lac OBJECTS".ASTROPHYSICAL JOURNAL 752.2(2012):157.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
8331.pdf(1558KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhang, J]的文章
[Liang, EW]的文章
[张双南]的文章
百度学术
百度学术中相似的文章
[Zhang, J]的文章
[Liang, EW]的文章
[张双南]的文章
必应学术
必应学术中相似的文章
[Zhang, J]的文章
[Liang, EW]的文章
[张双南]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。