Probing dark energy with the Kunlun Dark Universe Survey Telescope

• Published in: Publications of the Astronomical Society of the Pacific
• Main Authors: Zhao, Gong-Bo, Zhan, Hu, Wang, Lifan, Fan, Zuhui, Zhang, Xinmin
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2011
• Subjects: astro-ph.CO; cosmological parameters; distance scale; gravitational lensing; large-scale structure of universe; Antarc*; Antarctica
• Online Access: https://doi.org/10.1086/660801; https://researchportal.port.ac.uk/portal/en/publications/probing-dark-energy-with-the-kunlun-dark-universe-survey-telescope(99525366-3064-48b6-946e-5566c96ee84b).html

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 deg 2 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 deg 2 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.