Elements: The TARDIS radiative transfer framework - A modeling toolkit for transients

元素：TARDIS 辐射传输框架 - 瞬态建模工具包

• 批准号: 2311323
• 负责人: Wolfgang Kerzendorf
• 金额: $ 56.55万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2311323&HistoricalAwards=false
• 关键词: Elements; TARDIS; radiative; transfer; framework

Supernovae are powerful cosmic explosions and are vital for studying galaxy evolution, heavy element production, and the dynamics of the universe. The TARDIS project aims to advance our understanding of supernovae. TARDIS is an open-science radiative transfer code, that allows scientists to model and simulate various types of supernovae, unlocking insights into their physics. With the number of supernova discoveries rising exponentially, TARDIS provides a valuable tool to comprehend these phenomena. The TARDIS project actively supports scientific education and diversity through training programs and an open-science approach. Thus TARDIS provides opportunities for individuals from varied backgrounds to engage in cutting-edge research and contribute to the scientific community. By utilizing its open-science radiative transfer code, the TARDIS project facilitates scientific progress, benefits society, and promotes inclusivity and diversity within the scientific community.The rapid increase in observational capability has led to vast increases in discovery space in the field of astrophysical transients. Theory has made large leaps due to the widespread availability of supercomputing resources enabling simulation at unprecedented detail. TARDIS is an open-science radiative transfer code that has been used to model a large variety of astrophysical transients (supernovae, superluminous supernovae, kilonovae). The transparent governance structure and equitable access have brought roughly one hundred developers to the project and earned the TARDIS community a fiscal sponsorship from the open-science foundation NUMFOCUS. TARDIS uses state-of-the-art industry-standard techniques based on the GitHub ecosystem. For ease of development and use (with a specific emphasis on including new contributors), the PYTHON language is used, enhanced by its scientific stack (including NUMPY, PANDAS, ASTROPY). The necessary computational speed for TARDIS – without sacrificing the ease of development – is achieved by using a novel Just-In-Time compiler technique provided by the NUMBA package. The distribution of TARDIS is handled via the use of industry-standard package managers for Python packages such as CONDA and PIP. This project uses a two-step approach to restructuring and adding a new time-dependent mode that will enable the use of TARDIS in an order of magnitude more science cases than the current version. It will modularize the TARDIS code base by separating it into state objects and plasma/transport solvers, then adds full-time dependence to the model solver, transport solvers, and plasma steps. These additions to TARDIS will increase the applicability of this open-science code to many more science cases and will also faciliitate a more rapid approach to adding new microphysics directions.This award by the NSF Office of Advanced Cyberinfrastructure is jointly supported by the NSF Division of Astronomical Sciences.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

超新星是强大的宇宙爆炸，对研究星系演化、重元素产生和宇宙动力学至关重要。TARDIS项目旨在促进我们对超新星的了解。TARDIS是一个开放科学的辐射传输代码，它允许科学家建模和模拟各种类型的超新星，解锁对其物理特性的见解。随着超新星发现的数量呈指数级增长，TARDIS为理解这些现象提供了一个有价值的工具。TARDIS项目通过培训项目和开放科学方法积极支持科学教育和多样性。因此，TARDIS为来自不同背景的个人提供了参与前沿研究并为科学界做出贡献的机会。通过利用其开放科学的辐射转移代码，TARDIS项目促进了科学进步，造福社会，并促进了科学界的包容性和多样性。观测能力的迅速提高导致了天体物理瞬变领域的发现空间的巨大增加。由于超级计算资源的广泛可用性使模拟达到前所未有的细节，理论已经取得了巨大的飞跃。TARDIS是一种开放科学辐射传输代码，已被用于模拟各种天体物理瞬态（超新星、超亮超新星、千新星）。透明的管理结构和公平的访问为该项目带来了大约100名开发人员，并为TARDIS社区赢得了开放科学基金会NUMFOCUS的财政赞助。TARDIS使用基于GitHub生态系统的最先进的行业标准技术。为了便于开发和使用（特别强调包括新的贡献者），使用了PYTHON语言，并通过其科学堆栈（包括NUMPY， PANDAS， ASTROPY）进行了增强。TARDIS所需的计算速度——不牺牲开发的便利性——是通过使用NUMBA包提供的一种新颖的即时编译器技术来实现的。TARDIS的分发是通过使用Python包（如CONDA和PIP）的行业标准包管理器来处理的。该项目采用了两步的方法来重组和添加一个新的时间依赖模式，这将使TARDIS在比当前版本更多的科学案例中使用。它将通过将TARDIS代码库分为状态对象和等离子体/传输求解器来模块化它，然后在模型求解器、传输求解器和等离子体步骤中添加全时依赖性。这些对TARDIS的补充将增加这一开放科学代码对更多科学案例的适用性，也将促进一种更快速的方法来添加新的微物理方向。该奖项由美国国家科学基金会高级网络基础设施办公室颁发，并由美国国家科学基金会天文科学部联合支持。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。