论文标题
三重翻转：在大奖重力镜头后面的Z〜6处第三个乘积的源
A Triple Rollover: A third multiply-imaged source at z~6 behind the Jackpot gravitational lens
论文作者
论文摘要
我们与Muse进行了五个小时的自适应辅助观察，我们在Redshift 5.975的Z = 0.222镜头Galaxy J0946+1006（'The Jackpot'）后面确定了一个双重成像的Ly Alpha源。源分离意味着〜2.5 Arcsec的爱因斯坦半径。与该镜头中的两个先前已知的爱因斯坦环（Radii 1.4 Arcsec在z = 0.609时Arcsec和z〜2.4时为2.1 Arcsec），现在是一个独特的星系尺度尺度三源式平面镜头。我们表明，J0946+1006的现有镜头模型成功地将两个新观察到的图像映射到Z = 5.975源平面上的一个共同点。新来源将对镜头和两个先前已知来源的质量分布提供进一步的限制。第三个来源还探测了两个对宇宙宇宙参数敏感的新距离缩放因子。我们表明，在对该深度的观察中，对新的乘积成像发射线来源的检测并不意外。其他已知镜头的类似数据应揭示出用于宇宙学和其他应用的多图像平面系统的较大样本。
UUsing a five-hour adaptive-optics-assisted observation with MUSE, we have identified a doubly-imaged Ly alpha source at redshift 5.975 behind the z=0.222 lens galaxy J0946+1006 ('the Jackpot'). The source separation implies an Einstein radius of ~2.5 arcsec. Combined with the two previously-known Einstein rings in this lens (radii 1.4 arcsec at z = 0.609 and 2.1 arcsec at z ~ 2.4), this system is now a unique galaxy-scale triple-source-plane lens. We show that existing lensing models for J0946+1006 successfully map the two new observed images to a common point on the z=5.975 source plane. The new source will provide further constraints on the mass distribution in the lens and in the two previously known sources. The third source also probes two new distance scaling factors which are sensitive to the cosmological parameters of the Universe. We show that detection of a new multiply imaged emission-line source is not unexpected in observations of this depth; similar data for other known lenses should reveal a larger sample of multiple-image-plane systems for cosmography and other applications.
