耀变体的峰频估计（英文）  

Peak frequency estimations for blazars

作　　者：张丽霞[1] 林潮[1,2,3] 樊军辉[1,2,3] 杨江河[4] Zhang Lixia;Lin Chao;Fan Junhui;Yang Jianghe(School for Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, China;Center for Astrophysics, Guangzhou University, Guangzhou 510006, China;Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province, Guangzhou 510006, China;Department of Physics and Electronics, Hunan University of Arts and Science, Changde 415000, China)

机构地区：[1]广州大学物理与电子工程学院,广东广州510006 [2]广州大学天体物理中心,广东广州510006 [3]广东省教育厅天文科学与技术实验室,广东广州510006 [4]湖南文理学院物理与电子科学学院,湖南常德415000

出　　处：《湖南文理学院学报（自然科学版）》2017年第1期13-18,34,共7页Journal of Hunan University of Arts and Science(Science and Technology)

基　　金：国家自然科学基金(U1531245,U1431112,11203007,11403006,10633010,11173009);广州大学创新基金(IFGZ);广东省珠江学者项目(GDUPS)(2009);羊城学者(10A027S);广东省和广州市重点学科;广东省创新团队(2014KCXTD014)

摘　　要：收集了60个耀变体样本,考察了有效谱指数(α_(RO),α_(OX)和α_(RX))与同步峰频(logv_p^s)之间的关系。斯皮尔曼秩检验的结果显示有效谱指数与同步峰频之间有很好的反相关。根据两者的相关给出了同步峰频与有效谱指数关联的经验公式。通过该公式用α_(RO)和α_(OX)估算了耀变体的同步峰频,所得结果与文献的经验公式结果进行了比较,发现本文公式的结果更精确。A sample of60blazars is collected to investigate the correlation between the effective spectral indexes(αRO,αOX,andαRX)and the synchrotron peak frequency(logvps).The Spearman rank correlation analysis resultsindicate that there are strong anti-correlations between the effective spectral indexes and the synchrotron peakfrequency,and those relations mainly follow the blazar sequence.Then,a new empirical relationship between thesynchrotron peak frequency(logvps)and the effective spectral indexes(αRO andαOX)is obtained.The empiricalrelationship can be used to estimate logvps of blazars using the correspondingαRO andαOX.Comparing of the peakfrequency estimated by present empirical relationship with those of previous works,it is found out that presentempirical relationship is more accurate than theirs.

关 键 词：活动星系核 耀变体 同步峰频 

分 类 号：P157.7[天文地球—天文学]