论文标题
高斯copula的红移进化X射线和紫外线亮度关系
Redshift-evolutionary X-ray and UV luminosity relation of quasars from Gaussian copula
论文作者
论文摘要
我们构建了一个三维和红移进化的X射线和紫外线（$ l_x-l_ {uv} $）的光度关系，即来自称为copula的强大统计工具的类星体关系，并发现构建的$ l_x-l_ {uv} $与copula的关系比copula比标准的$更可行，而不是标准的$ nouth $ nosevations $ nosevations $ yvary $ redshift $ redshift $ redshift-evritation varrion varrion varrion varrion varrion varrion varrion varriant varrion v。 Akaike和Bayes信息标准表明，类星体数据强烈支持三维$ L_X-L_ {UV} $关系。我们的结果表明，如果$ L_X-L_ {UV} $从Copula使用来校准类星体数据，则可以将类星体视为宇宙距离的可靠指标。
We construct a three-dimensional and redshift-evolutionary X-ray and ultraviolet ($L_X-L_{UV}$) luminosity relation for quasars from the powerful statistic tool called copula, and find that the constructed $L_X-L_{UV}$ relation from copula is more viable than the standard one and the observations favor the redshift-evolutionary relation more than $3σ$. The Akaike and Bayes information criterions indicate that the quasar data support strongly the three-dimensional $L_X-L_{UV}$ relation. Our results show that the quasars can be regarded as a reliable indicator of the cosmic distance if the $L_X-L_{UV}$ relation from copula is used to calibrate quasar data.
