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arXiv 0904.0468astro-ph.CO
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BigBOSS:地面阶段IV暗能量实验

BigBOSS: The Ground-Based Stage IV Dark Energy Experiment

David J. Schlegel, Chris Bebek, Henry Heetderks, Shirley Ho, Michael Lampton, Michael Levi, Nick Mostek, Nikhil Padmanabhan, Saul Perlmutter, Natalie Roe, Micha… 展开作者

David J. Schlegel, Chris Bebek, Henry Heetderks, Shirley Ho, Michael Lampton, Michael Levi, Nick Mostek, Nikhil Padmanabhan, Saul Perlmutter, Natalie Roe, Michael Sholl, George Smoot, Martin White, Arjun Dey, Tony Abraham, Buell Jannuzi, Dick Joyce, Ming Liang, Mike Merrill, Knut Olsen, Samir Salim

摘要:

BigBOSS实验是美国能源部和国家科学基金会提议的第四阶段地面暗能量实验,目的是研究重子声学振荡(BAO)和结构的增长,并进行全天星系红移测量。该项目旨在利用NOAO运营的现有地面设施解开暗能量的奥秘。一个新的4000光纤R=5000光谱仪覆盖3度直径的领域将测量BAO和红移空间扭曲的星系和氢气的分布跨越红移从0.2<z<3.5。该实验的暗能量任务组优值(DETF FoM)预计将等于BAO的JDEM任务,具有较低的风险和成本,典型的地基实验。该项目将通过现有的NOAO设施为美国社区提供前所未有的多目标光谱能力。美国社区将可以直接使用这种仪器/望远镜组合,以及访问BAO关键项目将创建的遗留档案。

英文摘要:

The BigBOSS experiment is a proposed DOE-NSF Stage IV ground-based dark energy experiment to study baryon acoustic oscillations (BAO) and the growth of structure with an all-sky galaxy redshift survey. The project is designed to unlock the mystery of dark energy using existing ground-based facilities operated by NOAO. A new 4000-fiber R=5000 spectrograph covering a 3-degree diameter field will measure BAO and redshift space distortions in the distribution of galaxies and hydrogen gas spanning redshifts from 0.2<z<3.5. The Dark Energy Task Force figure of merit (DETF FoM) for this experiment is expected to be equal to that of a JDEM mission for BAO with the lower risk and cost typical of a ground-based experiment. This project will enable an unprecedented multi-object spectroscopic capability for the U.S. community through an existing NOAO facility. The U.S. community would have access directly to this instrument/telescope combination, as well as access to the legacy archives that will be created by the BAO key project.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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