Exploratory Chandra Observations of the Three Highest Redshift Quasars Known
Exploratory Chandra Observations of the Three Highest Redshift Quasars Known
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DOI：
10.1086/340581
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发表时间：
2002-02
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影响因子：
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通讯作者：
W. Brandt;D. Schneider;Xiaohui Fan;M. Strauss;J. Gunn;G. Richards;S. Anderson;D. Berk;N. Bahcall;J. Brinkmann;R. Brunner;Bingqiu Chen;G. Hennessy;D. Lamb;W. Voges;D. York
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文献类型：
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作者：
W. Brandt;D. Schneider;Xiaohui Fan;M. Strauss;J. Gunn;G. Richards;S. Anderson;D. Berk;N. Bahcall;J. Brinkmann;R. Brunner;Bingqiu Chen;G. Hennessy;D. Lamb;W. Voges;D. York
我们报告探索钱德拉观测三个最高的红移类星体（z = 5.82，5.99和6.28），都发现在斯隆数字巡天。这些数据，结合之前XMM-牛顿观测到的z = 5.74的类星体，形成了一个完整的颜色选择，z > 5.7的类星体。所有的类星体都探测到了X射线辐射，这表明z ≥ 6的光学选择类星体的X射线与光通量之比与低红移类星体的X射线与光通量之比相似。观测结果表明，利用当前和未来的X射线探测任务获得z ≥ 6类星体的高质量X射线谱是可行的。
We report on exploratory Chandra observations of the three highest redshift quasars known (z = 5.82, 5.99, and 6.28), all found in the Sloan Digital Sky Survey. These data, combined with a previous XMM-Newton observation of a z = 5.74 quasar, form a complete set of color-selected, z > 5.7 quasars. X-ray emission is detected from all of the quasars at levels that indicate that the X-ray-to-optical flux ratios of z ≈ 6, optically selected quasars are similar to those of lower redshift quasars. The observations demonstrate that it will be feasible to obtain quality X-ray spectra of z ≈ 6 quasars with current and future X-ray missions.