U.S.-Japan Cooperative Science: Local-Area Helioseismology 118

美日合作科学：局域日震学 118

• 批准号: 0003813
• 负责人: Philip Scherrer
• 金额: $ 2.53万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0003813&HistoricalAwards=false
• 关键词: U.S.; Japan; Cooperative; Science; Local

0003813ScherrerThis award supports a three-year collaborative research project between Professor Phillip Scherrer of Stanford University and Professor Hiromoto Shibahashi of the University of Tokyo in Japan. The researchers will undertake a study of local-area helioseismology 118. Local-area helioseismology enables researchers to investigate subsurface flows and small-scale magnetic fields, which have been beyond the reach of 'traditional' helioseismology based on observation of normal modes of solar oscillations. Combined with 'traditional' solar physics and with 'traditional' helioseismology, local-area helioseismology can pave the way to the understanding of the solar activity cycle, and the Sun itself as an astrophysical plasma laboratory. The collaboration aims at advancing local-area helioseismology, with active American solar observation programs (GONG and MDI/SOHO) and the Japanese program (Solar-B). The proposed research is focused on developing new methods of data analyses and theoretical interpretations and inferences. First, they will develop methods of data analysis and interpretation for the local-area helioseismology and analyze the data from the currently running projects, to carry out 3D tomography for flow and sound-speed anomaly due to the magnetic field, and to detect the leakage of wave into the chromosphere. If they can detect waves that travel to the backside of the Sun and them come back, through the central region of the Sun, probing the solar core will be possible too. Second, they will investigate the possibility of local-area helioseismology using very high-resolution velocity field data such as is expected from the Solar Optical Telescope (SOT) on-board Solar-B and other future high-resolution ground-based and space projects. The project brings together the efforts of two laboratories that have complementary expertise and research capabilities. This research advances international human resources through the participation of graduate students. Through the exchange of ideas and technology, this project will broaden our base of basic knowledge and promote international understanding and cooperation. The researchers plan to publish results of their research in scientific journals and report on the findings at scientific meetings.

该奖项支持斯坦福大学的Phillip Scherrer教授和日本东京大学的Hiromoto Shibahashi教授之间为期三年的合作研究项目。研究人员将对当地的日震学进行研究。局域日震学使研究人员能够研究地下流动和小规模磁场，这些已经超出了基于对太阳振荡正常模式的观察的传统日震学的范围。与“传统”太阳物理学和“传统”日震学相结合，局部地区的日震学可以为理解太阳活动周期以及太阳本身作为天体物理等离子体实验室铺平道路。该合作旨在通过积极的美国太阳观测计划(GONG和MDI/SOHO)和日本计划(Solar-B)推进当地的日震学。拟议的研究侧重于开发新的数据分析方法和理论解释和推论。首先，他们将开发局部地区日震学的数据分析和解释方法，并分析目前正在进行的项目的数据，对磁场引起的流动和声速异常进行三维层析成像，并检测波向色球的泄漏。如果他们能探测到传播到太阳背面的波，并通过太阳的中心区域返回，那么探测太阳核心也将是可能的。其次，他们将使用非常高分辨率的速度场数据来研究局部地区日震学的可能性，例如预计来自太阳光学望远镜(SOT)机载Solar-B和其他未来高分辨率地面和空间项目的数据。该项目汇集了两个拥有互补专业知识和研究能力的实验室的努力。这项研究通过研究生的参与促进了国际人力资源的发展。通过思想和技术的交流，这个项目将扩大我们的基础知识基础，促进国际理解与合作。研究人员计划在科学期刊上发表他们的研究成果，并在科学会议上报告这些发现。