湖南文理学院学报（自然科学版）
湖南文理學院學報（自然科學版）
호남문이학원학보（자연과학판）
JOURNAL OF HUNAN UNIVERSITY OF ARTS AND SCIENCE(SCIENCE AND TECHNOLOGY)
2011年
3期
27-32
,共6页
活动星系核%蝎虎天体%类星体%伽玛射线辐射
活動星繫覈%蝎虎天體%類星體%伽瑪射線輻射
활동성계핵%갈호천체%류성체%가마사선복사
Active galactic nuclei (AGNs)%BL Lacs%Quasars%γ-ray emissions
以费米伽玛射线空间望远镜运行来最初3个月观测的Blazar为样本,给出了74个(46个平谱射电类星体,28个BL Lac天体)伽玛射线噪Blazar天体的射电(5 GHz)和伽玛射线流量,计算了射电到伽玛射线辐射的有效谱指数αRγ.研究了有效谱指数及射电光度与伽玛射线光度的关系.结果表明:对于射电和伽玛射线光度都有一个相同序列,即:FSRQs、RBLs、XBLs,RBLs似乎为FSRQs和RBLs的中间状态.发现射电和伽玛射线光度强线性相关,相关系数r=0.93,或然概率p＜0.000 1.表明伽玛射线辐射和射电辐射有很好地关联,伽玛射线辐射应来自同步自康普顿辐射.我们还发现,在αRγ对vLγ图中,能用直线log(vLγ)=46 erg·s-1较好地将FSRQs和BL Lacs分离.
以費米伽瑪射線空間望遠鏡運行來最初3箇月觀測的Blazar為樣本,給齣瞭74箇(46箇平譜射電類星體,28箇BL Lac天體)伽瑪射線譟Blazar天體的射電(5 GHz)和伽瑪射線流量,計算瞭射電到伽瑪射線輻射的有效譜指數αRγ.研究瞭有效譜指數及射電光度與伽瑪射線光度的關繫.結果錶明:對于射電和伽瑪射線光度都有一箇相同序列,即:FSRQs、RBLs、XBLs,RBLs似乎為FSRQs和RBLs的中間狀態.髮現射電和伽瑪射線光度彊線性相關,相關繫數r=0.93,或然概率p＜0.000 1.錶明伽瑪射線輻射和射電輻射有很好地關聯,伽瑪射線輻射應來自同步自康普頓輻射.我們還髮現,在αRγ對vLγ圖中,能用直線log(vLγ)=46 erg·s-1較好地將FSRQs和BL Lacs分離.
이비미가마사선공간망원경운행래최초3개월관측적Blazar위양본,급출료74개(46개평보사전류성체,28개BL Lac천체)가마사선조Blazar천체적사전(5 GHz)화가마사선류량,계산료사전도가마사선복사적유효보지수αRγ.연구료유효보지수급사전광도여가마사선광도적관계.결과표명:대우사전화가마사선광도도유일개상동서렬,즉:FSRQs、RBLs、XBLs,RBLs사호위FSRQs화RBLs적중간상태.발현사전화가마사선광도강선성상관,상관계수r=0.93,혹연개솔p＜0.000 1.표명가마사선복사화사전복사유흔호지관련,가마사선복사응래자동보자강보돈복사.아문환발현,재αRγ대vLγ도중,능용직선log(vLγ)=46 erg·s-1교호지장FSRQs화BL Lacs분리.
In this work,the radio and γ-ray emissions are compiled for a sample of 74 γ-ray loud blazars (46 fiat spectrum radio quasars,28 BL Lac objects) to calculate the radio - γ-ray effective spectrum index αRγ.Also the correlations between αRγ and γ-ray luminosity,and radio and γ-ray luminosity are investigated.Results are as follows:For radio and γ-ray luminosity,there is a consequence for FSRQs,RBLs,and XBLs.RBLs seem the bridge connect FSRQs to XBLs.A strong correlation between radio and γ-ray luminosity is found,with a correlation coefficient of r =0.93,and a chance probability p ＜ 0.000 1.It supports that the γ-ray is associated well with the radio emissions,and the γ-ray emissions likely from the SSC process.We also found that FSRQs and BL Lacs can be divided partially at log(vLγ) =46 erg·s-1 in the plan of radio to γ-ray effective spectrum index vs γ-ray lominosity.
