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The very high-redshift Lya forest at high resolution

机译:高度分辨率的高射频Lya森林

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We present new Keck/HIRES observations of seven of the highest-redshift known quasars. These include four with zqso ^5.8 and two with zqso ^ 6.3. The data will be used to produced a complete statistical description of the Lya forest at z > 5, allowing us to better assess the significance of the strong absorption seen at z > 6 2, We introduce the statistics of transmission gaps as a means of characterising the high-redshift evolution of the forest. In addition, we identify several clear absorption lines of low optical depth in the quasar proximity regions and briefly discuss using these to place constraints on the thermal history of the IGM at z > 5.
机译:我们展示了新的keck /雇用七个最高红移众所周知的额外标准的观察结果。这些包括ZQSO ^ 5.8和ZQSO ^ 6.3的两个。这些数据将用于在Z> 5的LYA森林中产生完整的统计描述,使我们能够更好地评估在Z> 6 2处看到的强吸收的重要性,我们介绍了传输差距作为表征的手段的统计森林的高红移演化。此外,我们在准接近区域中识别出几种清晰的低光学深度的透明吸收线,并简要讨论使用这些来施加对Z> 5的IgM的热历史上的约束。

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