摘要
从第三期费米数据中选出235个受周围伽马射线亮源和延展源影响较小的耀变体,对其100 MeV-200 GeV伽马波段光变数据进行流量RMS与流量的相关性分析,对流量分布进行对数正态拟合,将得到的线性拟合斜率、皮尔森系数和对数正态分布的宽度按平谱射电类星体(FSRQs)和蝎虎座BL天体(BL Lacs)两类进行统计分析,结果表明FSRQs的这三个量的统计平均值均大于BL Lacs,意味着在高能波段随流量的增大FSRQs光变比BL Lacs更加剧烈.根据这一性质,推测未知类型的耀变体3FGL J0532.0-4827属于FSRQ.
Based on the Fermi Large Area Telescope Third Source Catalog,we selected 235 blazars with less polluted by surrounding gamma ray bright source and extended source.Correlation analysis of RMS and flux and lognormal fitting of flux distribution was carried out for their 100 Mev-200 Gev gamma-band optical data.The obtained slope,Pearson coefficient and lognormal distribution width were statistically analyzed by flat spectrum radio quasar(FSRQs)and BL Lacs.The result show that the statistical average values of the three quantities of FSRQs are greater than those of BL Lacs,which means that FSRQs have more drastic variability than BL Lacs in high-energy band with the increase of flux.Based on this property,we conclude that a blazar(3FGL J0532.0-4827)of the unknown type is likely to belong to FSRQs.
作者
张燕
马力
毛李胜
杨星
龚云露
黄邦蓉
易庭丰
ZHANG Yan;MA Li;MAO Li-sheng;YANG Xing;GONG Yun-lu;HUANG Bang-rong;YI Ting-feng(Department of Physics,Yunnan Normal University,Kunming 650500,China)
出处
《云南师范大学学报（自然科学版）》
2020年第6期1-6,共6页
Journal of Yunnan Normal University:Natural Sciences Edition
基金
国家自然科学基金资助项目(11863007,12063007).
