Probing Dark Energy with the Kunlun Dark Universe Survey Telescope

Probing Dark Energy with the Kunlun Dark Universe Survey Telescope
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用昆仑暗宇宙巡天望远镜探测暗能量

DOI:
10.1086/660801
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发表时间:
2010-05
影响因子:
3.5
通讯作者:
Zhang, Xinmin
Zhang, Xinmin
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhao, Gong-Bo;Zhan, Hu;Wang, Lifan;Fan, Zuhui;Zhang, Xinmin

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暗能量是许多即将到来的大规模调查的重要科学驱动力。南极洲的穹窿A具有小而稳定的观测和低热红外背景,为揭示有关宇宙的基本问题提供了一个独特的机会。我们表明,在ugrizyJH波段进行10000 deg2的深度、高分辨率成像调查,可以利用Ia型超新星、重子声学振荡和弱透镜技术,为暗能量状态方程参数提供竞争约束。昆仑暗宇宙巡天望远镜(KDUST)在5000 - 10000℃以上的yJH波段和大型天气巡天望远镜(ugrizy波段)在同一区域的协同努力,可以部分实现这样的巡天。此外,联合调查可以利用圆顶A的高分辨率成像,进一步收紧对暗能量的限制,并通过强透镜效应以及星系/星系弱透镜效应测量暗物质的性质。
Dark energy is an important science driver of many upcoming large-scale surveys. With small, stable seeing, and low thermal infrared background, Dome A, Antarctica, offers a unique opportunity for shedding light on fundamental questions about the universe. We show that a deep, high-resolution imaging survey of 10,000 deg2 in ugrizyJH bands can provide competitive constraints on dark energy equation-of-state parameters using Type Ia supernovae, baryon acoustic oscillations, and weak-lensing techniques. Such a survey may be partially achieved with a coordinated effort of the Kunlun Dark Universe Survey Telescope (KDUST) in yJH bands over 5000–10,000 deg2 and the Large Synoptic Survey Telescope in ugrizy bands over the same area. Moreover, the joint survey can take advantage of the high-resolution imaging at Dome A to further tighten the constraints on dark energy and to measure dark matter properties with strong lensing, as well as galaxy/galaxy weak lensing.
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