CAIXA：XMM-牛顿档案II中的AGN目录。多波长相关
CAIXA: a Catalogue of AGN In the XMM-Newton Archive II. Multiwavelength correlations
摘要：
我们在一篇配套论文中介绍了CAIXA，XMM-牛顿档案中的活动星系核目录。在这里，系统的搜索之间的相关性的X射线光谱特性和多波长数据进行CAIXA的源。所有的显着（>99.9%的置信水平）的相关性进行了讨论，以及它们对目前的活动星系核模型的物理意义。本文讨论了两个主要的相关性：（1）H $β$光线的半高宽与软硬X射线亮度之比之间存在很强的反相关性。尽管在文献中已经讨论了光学线宽和X射线光谱陡度之间的类似反相关性（参见例如，Laor et al. 1994，Boller et al. 1996，Brandt et al. 1997），我们认为本文提出的公式更基本，因为它联系了模型无关的量。再加上V与硬X射线通量比和H $β$ FHWM之间的强反相关性，它支持活动星系核中软过剩的起源，这需要强抑制硬X射线发射; b）X射线光度和黑洞质量之间的强（和预期的）相关性。它的斜率小于1，与爱丁顿比率相关的辐射热校正一致，例如Vasudevan和Fabian（2009）最近提出的。此外，我们通过各种统计检验，严格审查的作用，距离偏差发挥强射电X射线光度相关性在CAIXA和其他地方发现，我们得出的结论是，只有完整的，无偏的样本（如最近发表的Behar和Laor，2008年）应被用来绘制观测约束的无线电发射的起源在无线电宁静活动星系核。
英文摘要：
We presented CAIXA, a Catalogue of AGN in the XMM-Newton Archive, in a companion paper. Here, a systematic search for correlations between the X-ray spectral properties and the multiwavelength data was performed for the sources in CAIXA. All the significant (>99.9% confidence level) correlations are discussed along with their physical implications on current models of AGN. Two main correlations are discussed in this paper: a) a very strong anti-correlation between the FWHM of the H$β$ optical line and the ratio between the soft and the hard X-ray luminosity. Although similar anti-correlations between optical line width and X-ray spectral steepness have already been discussed in the literature (see e.g., Laor et al. 1994, Boller et al. 1996, Brandt et al. 1997), we consider the formulation we present in this paper is more fundamental, as it links model-independent quantities. Coupled with a strong anti-correlation between the V to hard X-ray flux ratio and the H$β$ FHWM, it supports scenarios for the origin of the soft excess in AGN, which require strong suppression of the hard X-ray emission; b) a strong (and expected) correlation between the X-ray luminosity and the black hole mass. Its slope, flatter than 1, is consistent with Eddington ratio-dependent bolometric corrections, such as that recently proposed by Vasudevan & Fabian (2009). Moreover, we critically review through various statistical tests the role that distance biases play in the strong radio to X-ray luminosity correlation found in CAIXA and elsewhere; we conclude that only complete, unbiased samples (such as that recently published by Behar & Laor, 2008) should be used to draw observational constraints on the origin of radio emission in radio-quiet AGN.
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