The Fermi blazars' divide based on the diagnostic of the SEDs peak frequencies
The Fermi blazars' divide based on the diagnostic of the SEDs peak frequencies
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DOI：
10.1063/1.3395999
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发表时间：
2010-02
期刊：
影响因子：
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通讯作者：
A. Tramacere;E. Cavazzuti;P. Giommi;N. Mazziotta;C. Monte;F. C. Collaboration
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文献类型：
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作者：
A. Tramacere;E. Cavazzuti;P. Giommi;N. Mazziotta;C. Monte;F. C. Collaboration
我们将Fermi和Swift数据与射电近红外光学和硬X/伽马射线数据相结合，研究了LAT明亮AGN样本（LBAS）数据采集周期三个月内探测到的48颗LBAS耀变体的准同步光谱能量分布（SED）。利用这些准同步SEDs，对blazars宽带发射的低能峰和高能峰进行采样，我们能够应用基于同步加速器(S)和逆康普顿（IC）组件峰值频率估计的诊断工具。我们的分析显示费米耀变体的分裂是基于SED的峰值频率。结果表明，同步自康普顿（SSC）区域分为两个νpS−γpSSC平面。在该区域内或以下，可能通过SSC过程辐射的天体是高频峰值BL - Lac天体（HBL），或低/中频峰值BL - Lac天体（LBL/IBL）。在SSC区域内或以下的所有IBLs/LBLs都不是康普顿主导的。位于SSC区域上方的物体…
We have studied the quasi‐simultaneous Spectral Energy Distributions (SED) of 48 LBAS blazars, detected within the three months of the LAT Bright AGN Sample (LBAS) data taking period, combining Fermi and Swift data with radio NIR‐Optical and hard‐ X/gamma‐ray data.Using these quasi‐simultaneous SEDs, sampling both the low and the high energy peak of the blazars broad band emission, we were able to apply a diagnostic tool based on the estimate of the peak frequencies of the synchrotron (S) and Inverse Compton (IC) components.Our analysis shows a Fermi blazar’s divide based on the peak frequencies of the SED. The robust result is that the Synchrotron Self Compton (SSC) region divides in two the νpS−γpSSC plane. Objects within or below this region, radiating likely via the SSC process, are high‐frequency‐peaked BL Lac object (HBL), or low/intermediate‐frequency‐peaked BL Lac object (LBL/IBL). All of the IBLs/LBLs within or below the SSC region are not Compton dominated. The objects lying above the SSC region...