Probing Dark Energy with Type 1a Supernovae

该项目的目的是对最近完成的所有Ia型超新星（SN Ia）调查进行全面分析，并从中得出可靠的宇宙学约束。研究人员将与理论学家合作，开发最先进的Ia超新星爆炸三维模拟，根据观测数据测试模型，其长期目标是开发理论上知情的SN距离估计。此外，该项目将优化设计和开发新的分析工具，为未来的大型SN调查，特别是开发无光谱识别和红移的SN宇宙学分析方法。所有这些工具都将成为一个灵活的公共软件包SNANA的一部分，提案人已经并将继续开发并与社区分享。这项工作的广泛影响包括培训本科生和研究生，将超新星数据纳入b谷歌Sky，发布供社区使用的软件，以及发展本科生天文学实验室。

The aim of this project is to carry out a comprehensive analysis of all the recently completed Supernova Type Ia (SN Ia) surveys and derive robust cosmological constraints from them. The investigators will collaborate with theorists developing state-of-the-art 3-d simulations of SN Ia explosions to test the models against observational data, with the long-term goal of developing theoretically-informed SN distance estimates. In addition, the project will optimize the design of and develop new analysis tools for future large SN surveys, in particular developing methods for SN cosmology analysis without spectroscopic identification or redshifts. All these tools will be part of a flexible, public software package, SNANA, that the proposers have and will continue to develop and share with the community.Broader impacts of the work include training of undergraduate and graduate students, incorporating supernova data into Google Sky, release of software for use by the community, and development of undergraduate astronomy labs.