标题： 射电通过$γ$-射线光谱能量分布的已知耀变体综合统计描述 显示英文标题

标题： A Comprehensive Statistical Description of Radio-Through-$γ$-Ray Spectral Energy Distributions of All Known Blazars

摘要： 我们结合了来自Roma-BZCAT目录的耀星多波长数据，并分析了数百个X射线光谱。 我们给出了最终样本中2214个耀星在从射电到$\gamma$-rays的12个频率波段中的通量和能谱分布（SEDs）。 使用一种与模型无关的统计方法，我们寻找SEDs中的系统性趋势；最显著的趋势涉及耀星的射电光度和X射线光谱指数。 我们使用主成分分析（PCA），以确定耀星SEDs的基础向量，并为了最大化样本大小，使用K最近邻方法填补缺失的通量。 我们使用的数据量比Fossati等人在1997年和1998年首次报告耀星光度与SED形状趋势时多出一个数量级以上，我们确认了射电光度与同步辐射峰值频率之间的反相关关系，尽管其离散程度比小样本中看到的更大。 同样可以在全波段光度与同步辐射峰值频率之间看到这一趋势。 最后，我们使用所有可用的耀星数据来确定一个仅依赖于1.4~GHz处的射电光度和红移的经验SED描述。 我们验证了这种统计上显著的关系并非由于通量限制样本中自然存在的光度-光度相关性（即，相关性实际上是由于红移而非光度引起的）。 显示英文摘要

摘要： We combined multi-wavelength data for blazars from the Roma-BZCAT catalog and analyzed hundreds of X-ray spectra. We present the fluxes and Spectral Energy Distributions (SEDs), in 12 frequency bands from radio to $\gamma$-rays, for a final sample of 2214 blazars. Using a model-independent statistical approach, we looked for systematic trends in the SEDs; the most significant trends involved the radio luminosities and X-ray spectral indices of the blazars. We used a Principal Component Analysis (PCA), to determine the basis vectors of the blazar SEDs and, in order to maximize the size of the sample, imputed missing fluxes using the K-nearest neighbors method. Using more than an order of magnitude more data than was available when Fossati et al. (1997, 1998) first reported trends of SED shape with blazar luminosity, we confirmed the anti-correlation between radio luminosity and synchrotron peak frequency, although with greater scatter than was seen in the smaller sample. The same trend can be seen between bolometric luminosity and synchrotron peak frequency. Finally, we used all available blazar data to determine an empirical SED description that depends only on the radio luminosity at 1.4~GHz and the redshift. We verified that this statistically significant relation was not a result of the luminosity-luminosity correlations that are natural in flux-limited samples (i.e., where the correlation is actually caused by the redshift rather than the luminosity).