NSF-CGP Fellowship: Studies of the Solar Corona Using Simultaneous X-ray and Radio Observations

NSF-CGP 奖学金：利用同步 X 射线和射电观测研究日冕

• 批准号: 9722489
• 负责人: Mukul Kundu
• 金额: $ 1.58万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-07-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9722489&HistoricalAwards=false
• 关键词: NSF; CGP; Fellowship; Studies; Solar

9722489 Kundu This award provides funds to support a three-month research visit by Dr. Mukul R. Kundu, Department of Astronomy, University of Maryland at College Park, for collaboration with Dr. Takashi Sakurai, Narikura Solar Observatory, National Astronomical Observatory, Mitaka, Japan. Their research is concerned with studies of the sun's corona and solar flares using simultaneously obtained X-ray and radio data from the Japanese Space mission Yohkoh and ground based radio telescopes, especially, the Nobeyama Radioheliograph in Japan. Three specific projects included in this research, covering a broad range of coronal phenomena are (1) a study of radio emission associated with coronal X-ray jets discovered by SXT (soft-X-ray brightenings which originate in the low corona and then propagate through the corona along magnetic loops), using both low-frequency and highfrequency radio data; and (2) a study of the evolution of active regions in terms of flare productivity; and (3) a survey of the Xray emission above sunspot umbrae, in order to determine the nature of the corona directly above sunspots; this will be combined with radio data on the magnetic fields above the same spots. Dr. Kundu has made pioneering contributions to the knowledge of the sun's corona using combined radio and X-ray imaging data. Dr.Sakurai will bring his theoretical expertise to the problem of studying solar active regions and flares from the point of view of magnetic energy storage and trigger mechanisms. Their complementary expertise is expected be an asset to their collaborative studies. The project will provide to the U.S. scientist access to unique resources, not available elsewhere in the world, for study of the sun's coronal activities. This project is supported under the Science Fellowship Program between the National Science Foundation and the Japan Foundation Center for Global Partnership. ***

9722489 Kundu该奖项提供资金支持Mukul R博士为期三个月的研究访问。Kundu，马里兰州大学帕克分校天文系，与日本三鹰国家天文台成仓太阳观测台Takashi Sakurai博士合作。 他们的研究涉及利用从日本空间使命Yohkoh和地面射电望远镜，特别是日本的Nobeyama射电日像仪同时获得的X射线和无线电数据研究日冕和太阳耀斑。这项研究包括三个具体项目，涵盖了广泛的日冕现象：（1）研究SXT发现的日冕X射线喷流的无线电发射（软X射线增亮，起源于低日冕，然后沿沿着传播通过日冕），使用低频和高频无线电数据;（2）从耀斑产生的角度研究活动区的演变;（3）测量太阳黑子本影上方的X射线辐射，以确定太阳黑子正上方日冕的性质;这将与同一地点上方磁场的无线电数据相结合。 Kundu博士利用无线电和X射线成像数据对太阳日冕的知识做出了开创性的贡献。樱井博士将把他的理论专长带到从磁能储存和触发机制的角度研究太阳活动区和耀斑的问题上。 他们互补的专业知识预计将成为他们合作研究的资产。 该项目将为美国科学家提供世界其他地方无法获得的独特资源，以研究太阳的日冕活动。 该项目得到了国家科学基金会和日本基金会全球伙伴关系中心之间的科学奖学金计划的支持。 ***