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费米耀变体光学波段色指数变化的研究
Alternative TitleStudy on Color Index of the Fermi Blazars
李富婷1; 张雄1; 熊定荣2; 徐小林1; 任国伟1; 晏培琳1
Source Publication天文研究与技术 (Astronomical Research & Technology)
2020
DOI10.14005/j.cnki.issn1672-7673.20200508.004
ClassificationP157
Contribution Rank第2完成单位
Indexed ByCSCD
Keyword耀变体 色指数 多普勒因子 相关关系 Bwb趋势
Abstract

本文利用调整流量基准面的方法修正19个费米Blazars的光学波段流量与色指数,通过对比修正前后色指数与星等相关关系,研究多普勒因子对于色指数变化机制的影响。研究表明:(1)修正前,只有5个源呈现明显的BWB趋势,2个源呈现明显的RWB趋势;(2)经过修正后,有9个源呈现明显的BWB趋势,6个源呈现弱的BWB趋势,只有4个源的色指数与星等不存在相关关系;(3)大约有一半的源的色变机制受到多普勒聚束效应的影响,在修正后,这些源的色指数与星等的相关性增强;(4)多普勒因子的变化可能是造成BWB趋势变弱的原因。通过研究色指数和星等的相关关系,能进一步解释Blazars的辐射机制。 

Other Abstract

In this paper, the optical band flux and color index of 19 Fermi Blazars are corrected by modulating the flux base-level. By comparing the correlation between the color index and the magnitude before and after the correction, the effect of the Doppler factor on the color index change mechanism is studied. Studies show that: (1) only five sources showed a clear BWB trend before the correction, and two sources showed a clear RWB trend; (2) after the correction, nine sources showed a clear BWB trend, and six sources showed a weak BWB trend, only the color indices of 4 sources have no correlation with the magnitude; (3) The color change mechanism of about half of the sources is affected by the Doppler beamforming effect. After correction, the correlation between the color index and magnitude of these sources is enhanced; (4) The change of the Doppler factor may be the cause of the weakening of the BWB trend. By studying the correlation between the color index and the magnitude, the radiation mechanism of Blazars can be further explained.

Funding Project国家自然科学基金重点项目[U1231203] ; 国家自然科学基金资助项目[11663009] ; 云南省高校高能天体物理重点实验室资助;
Funding Organization国家自然科学基金重点项目[U1231203] ; 国家自然科学基金资助项目[11663009] ; 云南省高校高能天体物理重点实验室资助;
Language中文
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
ISSN1672-7673
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/23275
Collection丽江天文观测站(南方基地)
Corresponding Author张雄
Affiliation1.云南师范大学物理与电子信息学院, 云南, 昆明, 650500
2.中国科学院云南天文台, 云南, 昆明, 650500
Recommended Citation
GB/T 7714
李富婷,张雄,熊定荣,等. 费米耀变体光学波段色指数变化的研究[J]. 天文研究与技术 (Astronomical Research & Technology),2020.
APA 李富婷,张雄,熊定荣,徐小林,任国伟,&晏培琳.(2020).费米耀变体光学波段色指数变化的研究.天文研究与技术 (Astronomical Research & Technology).
MLA 李富婷,et al."费米耀变体光学波段色指数变化的研究".天文研究与技术 (Astronomical Research & Technology) (2020).
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