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

9819917Kundu该奖项提供资金支持马里兰大学天文学系Mukul R. Kundu博士与日本国家天文台太阳物理部的Takashi Sakurai博士和其他科学家进行为期12个月的研究访问。这项研究将为参观者提供访问几台日本望远镜收集的优秀数据的机会，即Yohkoh卫星上的软x射线和硬x射线望远镜以及Nobeyama射电日像仪，工作在17和34 GHz。这些数据集将与其他相关的地基或天基数据一起用于研究太阳日冕。在这次合作中，美国访客将提供他在日冕研究方面的专业知识，而日本科学家将提供计算外推日冕磁场以进行太阳黑子大气建模的理论专业知识，以及获取Yohkoh x射线数据和地面光学数据的专业知识。利用日本数据设计的具体活动涵盖了广泛的日冕现象，包括(1)太阳黑子本影上方的x射线发射；(2)与日冕x射线射流相关的射电发射；(3)活跃区在耀斑生产力方面的演化；(4)在极日冕洞观测到毫米和微波增亮；(5)极地日冕羽喷发的微波和米波对应。该项目将是互惠互利的，因为合作者的专业知识互补，这将有助于本研究计划的思想、技能和技术的双向交流。本项目由美国国家科学基金会和日本财团全球伙伴关系中心科学奖学金计划资助

9819917KunduThis award provides funds to support a 12-month research visit by Dr. Mukul R. Kundu, Department of Astronomy, University of Maryland, for collaboration with Dr. Takashi Sakurai and other scientists in the Solar Physics Division, National Astronomical Observatory of Japan. This research will provide access of the visitor to the excellent data collected by several Japanese telescopes, namely the soft X-ray and hard X-ray telescopes on the Yohkoh satellite and the Nobeyama radioheliograph operating at 17 and 34 GHz. Together with other pertinent ground-based or space-based data, these data sets will be used for studies of the solar corona. In this collaboration, the U.S. visitor will provide his expertise in solar coronal research while the Japanese scientists will provide theoretical expertise in computing extrapolated coronal magnetic fields for sunspot atmosphere modeling, as well as expertise in accessing Yohkoh X-ray data and ground based optical data.The specific activities designed to take advantage of the Japanese data cover a broad range of coronal phenomena, including (1) X-ray emission above sunspot umbrae; (2) radio emission associated with coronal X-ray jets; (3) the evolution of active regions in terms of flare productivity; (4) millimeter and microwave brightening observed in the polar coronal holes; and (5) the microwave and meterwave counterparts of the erupting polar coronal plumes. The project will be mutually beneficial because of the complementary expertise of the collaborators which will contribute to the two-way exchanges of ideas, skills, and techniques planned for this research. This project is supported under the Science Fellowship Program between the National Science Foundation and the Japan Foundation Center for Global Partnership.***