INSPIRE: Modeling the Magnetic Interactions between Stars and Planets

INSPIRE：模拟恒星和行星之间的磁相互作用

• 批准号: 1461918
• 负责人: David Alexander
• 金额: $ 100万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-10-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1461918&HistoricalAwards=false
• 关键词: INSPIRE; Modeling; Magnetic; Interactions; between

This INSPIRE (Integrated NSF Support Promoting Interdisciplinary Research and Education) project is jointly funded by the Division of Astronomical Sciences in the Directorate for Mathematical and Physical Sciences, by the Geospace Section of the Division of Atmospheric and Geospace Sciences in the Directorate for Geosciences, by the Office of Multidisciplinary Activities in the Directorate of Mathematical and Physical Sciences, and by the Office of International and Integrative Activities. Currently, more than 1800 confirmed planetary systems beyond our solar system (i.e. extrasolar planets or exoplanets) have been discovered through ground and space-based astronomical techniques, with an additional 3600 candidate systems yet to be confirmed. These recent discoveries have resulted in dramatic growth in research related to the study of exoplanets with the ultimate objective being the discovery and characterization of habitable Earth-sized systems. The primary goal of this project is to improve our understanding of the interactions between stars and their planets, in particular the role of magnetic fields, to ultimately provide information on the habitability of exoplanet systems. The project's objectives are particularly well-matched to the interdisciplinary goals of the INSPIRE program. First, the project will attack a problem of significance to a broad scientific community, namely the characterization and identification of habitable exoplanets. Second, this research will provide an improved understanding of the Sun's interaction with the planets of our solar system. Furthermore, this project has potential for significant societal impact with regards to the search for life elsewhere in the Universe.This interdisciplinary project will apply techniques and methods drawn from the space physics community to the traditionally astrophysical research area of exoplanets. The project team has significant expertise in computational modeling of the magnetospheres of rocky planets like the Earth and gas giants like Jupiter and Saturn. They will combine their magnetospheric code with available magneto-hydrodynamic (MHD) models of the heliosphere in order to model interactions of the solar wind with planetary magnetospheres. A key aspect of the project is to apply these combined models to a much broader class of star-planet interactions by scaling the models to simulate a wide range of stellar parameters. Once the star-planet interactions are modeled, then given varying levels of stellar activity and planetary magnetospheric characteristics, the models will be used predict radio emission for a wide range of systems. These predictions can then be used to target specific systems for further observation and characterization as to their potential habitability.

这个INSPIRE（美国国家科学基金会促进跨学科研究和教育的综合支持）项目是由数学和物理科学理事会天文科学部、地球科学理事会大气和地球空间科学部地球空间科、数学和物理科学理事会多学科活动办公室以及国际和综合活动办公室共同资助的。目前，通过地面和天基天文技术，已经发现了超过1800个太阳系外的行星系统（即太阳系外行星或系外行星），还有3600个候选系统有待确认。这些最近的发现导致了与系外行星研究相关的研究的急剧增长，最终目标是发现和表征可居住的地球大小的系统。该项目的主要目标是提高我们对恒星与其行星之间相互作用的理解，特别是磁场的作用，最终提供有关系外行星系统可居住性的信息。该项目的目标与INSPIRE计划的跨学科目标特别吻合。首先，该项目将解决一个对广泛科学界具有重要意义的问题，即可居住系外行星的表征和识别。其次，这项研究将使我们更好地了解太阳与太阳系行星的相互作用。此外，这个项目对于寻找宇宙中其他地方的生命有潜在的重大社会影响。这个跨学科的项目将把空间物理界的技术和方法应用到系外行星的传统天体物理学研究领域。该项目团队在地球等岩石行星和木星、土星等气态巨行星的磁层计算建模方面具有重要的专业知识。他们将把他们的磁层代码与现有的日球层磁流体动力学（MHD）模型结合起来，以模拟太阳风与行星磁层的相互作用。该项目的一个关键方面是通过缩放模型来模拟大范围的恒星参数，将这些组合模型应用于更广泛的恒星-行星相互作用。一旦建立了恒星-行星相互作用的模型，然后给出不同水平的恒星活动和行星磁层特征，这些模型将用于预测广泛系统的无线电发射。然后，这些预测可用于针对特定系统进行进一步观察和表征，以确定其潜在的可居住性。