中国科学院紫金山天文台机构知识库
Advanced  
PMO OpenIR  > 暗物质和空间天文实验室  > 期刊论文
题名: Rapid variability of BL Lac 0925+504: interstellar scintillation induced?
作者: Liu, Jun1; Liu, Xiang1, 2
刊名: ASTROPHYSICS AND SPACE SCIENCE
出版日期: 2015-06-01
卷号: 357, 期号:2
关键词: Galaxies: active ; BL Lacertae objects: individual: 0925+504 ; ISM: structure ; Methods: data analysis
DOI: 10.1007/s10509-015-2393-5
文章类型: Article
英文摘要: Analysis of rapid variability at 4.85 GHz for the BL Lac object 0925+504 is presented and discussed. The structure functions (SF) are investigated with both refractive and weak interstellar scintillation (RISS/WISS) models analytically. Parameters obtained with these models are quantitatively compared, suggesting that the emission region of IDV is remarkably compact and the responsible interstellar scintillation medium (ISM) lies very close to the observer. Furthermore possible evidence of annual modulation of the variability timescales is detected in this source. Our findings indicate that the observed rapid variability in 0925+504 is predominantly caused by a scattering screen located along the line of sight to the source, at a distance of similar to 110 pc to the observer.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: EXTRAGALACTIC RADIO-SOURCES ; INTRADAY VARIABILITY ; PULSAR SCINTILLATION ; LACERTAE OBJECTS ; FERMI ; TELESCOPE ; BLAZARS ; SAMPLE ; VLBI ; 1ST
收录类别: SCI
语种: 英语
WOS记录号: WOS:000357338700012
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16000
Appears in Collections:暗物质和空间天文实验室_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Liu, Jun]'s Articles
[Liu, Xiang]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Liu, Jun]‘s Articles
[Liu, Xiang]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

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

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院紫金山天文台 - Feedback
Powered by CSpace