X-ray spectra of PG quasars. I - The continuum from X-rays to infrared
X-ray spectra of PG quasars. I - The continuum from X-rays to infrared
复制标题
DOI：
10.1086/164683
复制
发表时间：
1986-11
期刊：
影响因子：
--
通讯作者：
M. Elvis;R. Green;J. Bechtold;M. Schmidt;G. Neugebauer
中科院分区：
文献类型：
--
作者：
M. Elvis;R. Green;J. Bechtold;M. Schmidt;G. Neugebauer
本文给出了从Palomar Bright类星体观测中选取的八个光学类星体的爱因斯坦IPC X射线光谱。类星体的平均幂定律能量斜率在五个单独的情况下与硬X射线选择标准中的值不一致，而不是光度、红移或U-B颜色。给出了这些类星体的新的IUE、光学连续谱和红外光度测量结果。这些数据被组合成对数vf(V)和对数v分布，它们支持将整个类星体光谱分解成一个幂定律加上一个可能是由于吸积盘引起的叠加的光-UV大碰撞。至少有六个类星体具有VF(V)S，它们的红外和X射线功率定律大致相同，这表明这两个区域之间存在着强烈的联系。参考文献104篇。
Einstein IPC X-ray spectra for a sample of eight optically selected quasars from the Palomar Bright Quasar survey are presented. The quasars have a mean power law energy slope which in five individual cases is inconsistent with the value found in hard X-ray selection criterion rather than luminosity, redshift, or U-B color. New IUE and optical continuum spectra and infrared photometry are presented for these quasars. The data are combined into log vf(v) and log v distributions which support the decomposition of the overall quasar spectrum into a power law plus a superposed optical-UV big bump which may be due to an accretion disk. At least six of the quasars have vf(v)s which are roughly constant between their infrared and X-ray power laws, suggesting a strong link between the two regions. 104 references.