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arXiv 1602.01480astro-ph.IMastro-ph.CO
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SPOKES:一个用于光谱宇宙学观测的端到端模拟设备

SPOKES: an End-to-End Simulation Facility for Spectroscopic Cosmological Surveys

B. Nord, A. Amara, A. Refregier, La. Gamper, Lu. Gamper, B. Hambrecht, C. Chang, J. E. Forero-Romero, S. Serrano, C. Cunha, O. Coles, A. Nicola, M. Busha, A. Ba… 展开作者

B. Nord, A. Amara, A. Refregier, La. Gamper, Lu. Gamper, B. Hambrecht, C. Chang, J. E. Forero-Romero, S. Serrano, C. Cunha, O. Coles, A. Nicola, M. Busha, A. Bauer, W. Saunders, S. Jouvel, D. Kirk, R. Wechsler

摘要:

暗物质、暗能量和大尺度引力的本质是当今宇宙学中最紧迫的问题。这些基本问题需要高度精确的测量,目前正在设计一些宽视场光谱测量仪器来满足这一要求。在这些实验中的一个关键组成部分是一个模拟工具的开发,预测科学性能,定义需求流程,优化实施,论证可行性,并为开发做准备。我们提出了SPOKES(SPectroOscopic KEN模拟),一个端到端的光谱宇宙学调查的模拟设施,旨在解决这一挑战。SPOKES基于集成的基础设施、模块化功能组织、一致的数据处理和快速的数据访问。这些关键功能允许流水线运行的可再现性,实现易用性,并提供更新流水线内功能的灵活性。管道的循环性质提供了使科学输出成为设计优化和可行性测试的有效措施的可能。我们提出的体系结构,第一科学,和模拟管道的计算性能结果。该框架是通用的,但对于基准测试,我们使用暗能量光谱仪(DESpec),这是即将到来的项目暗能量光谱仪(DESI)的早期概念之一。我们讨论了如何SPOKES框架,使一个严格的过程来优化和利用光谱调查实验,以获得高精度的宇宙学测量最佳。

英文摘要:

The nature of dark matter, dark energy and large-scale gravity pose some of the most pressing questions in cosmology today. These fundamental questions require highly precise measurements, and a number of wide-field spectroscopic survey instruments are being designed to meet this requirement. A key component in these experiments is the development of a simulation tool to forecast science performance, define requirement flow-downs, optimize implementation, demonstrate feasibility, and prepare for exploitation. We present SPOKES (SPectrOscopic KEn Simulation), an end-to-end simulation facility for spectroscopic cosmological surveys designed to address this challenge. SPOKES is based on an integrated infrastructure, modular function organization, coherent data handling and fast data access. These key features allow reproducibility of pipeline runs, enable ease of use and provide flexibility to update functions within the pipeline. The cyclic nature of the pipeline offers the possibility to make the science output an efficient measure for design optimization and feasibility testing. We present the architecture, first science, and computational performance results of the simulation pipeline. The framework is general, but for the benchmark tests, we use the Dark Energy Spectrometer (DESpec), one of the early concepts for the upcoming project, the Dark Energy Spectroscopic Instrument (DESI). We discuss how the SPOKES framework enables a rigorous process to optimize and exploit spectroscopic survey experiments in order to derive high-precision cosmological measurements optimally.

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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