摘要
收集了252个费米耀变体的观测数据,分别使用二次函数和三次函数拟合源的(准)同时性宽带能谱,发现耀变体(准)同时性数据的完整程度对两种方法的拟合结果有一定的影响.基于二次函数的拟合结果,运用线性回归法分析耀变体峰值参量和谱指数之间的相关性,发现(1)同步峰峰值频率与同步峰峰值光度、逆康普顿峰峰值频率与逆康普顿峰峰值光度之间的序列统计特征只存在于整个样本中,并不存在于平谱射电类星体和蝎虎天体样本;(2)同步峰峰值频率与康普顿主导因子之间的序列统计特征同时存在于耀变体整个样本、单独的平谱射电类星体和蝎虎天体样本;(3)耀变体分群的统计特征消失了.
The observation data of 252 Fermi blazars are collected,and the quadratic function and cubic function are respectively used to fit the(quasi)simultaneity spectral energy distribution of the source.It is found that the completeness of the(quasi)simultaneity data of blazars has certain influence on the fitting results of the two methods.Based on the fitting results of the quadratic function,the correlation between the peak parameters and spectral indices of blazars is analyzed by linear regression method.It is found that(1)the sequence statistical characteristics between synchronous peak frequency and synchronous peak luminosity,inverse Compton peak frequency and inverse Compton peak luminosity exist only in the whole sample,not in the flat spectrum radio quasar and BL Lacertae samples;(2)The sequence statistical characteristics between the synchronous peak frequency and Compton dominant factor exist simultaneously in the whole sample of blazars,individual flat spectrum radio quasar and BL Lacertae samples;(3)The statistical features of blazars′divide disappeared.
作者
李仁旭
梁继华
彭瑞
谭灿
杜雷鸣
LI Ren-xu;LIANG Ji-hua;PENG Rui;TAN Can;DU Lei-ming(School of Physics and Electronic Information,Yunnan Normal University,Kunming 650500,China;The 3rd Middle School,Suzhou 234000,China)
出处
《云南师范大学学报（自然科学版）》
2020年第4期1-5,共5页
Journal of Yunnan Normal University:Natural Sciences Edition
基金
国家自然科学基金资助项目(U1431123)
云南省自然科学基金资助项目(2017FD072).
关键词
活动星系核
耀变体
能谱
统计
Active Galaxies Nuclei
Blazar
Energy spectrum
Statistics
