SHINE Postdoc: Interplanetary Scintillation (IPS) and Solar Mass Ejection Imager (SMEI) 3D-Reconstructions and Imaging of the Solar, Heliospheric, and INterplanetary Environment

SHINE 博士后：行星际闪烁 (IPS) 和太阳质量抛射成像仪 (SMEI) 太阳、日光层和行星际环境的 3D 重建和成像

• 批准号: 0925023
• 负责人: Bernard Jackson
• 金额: $ 16万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0925023&HistoricalAwards=false
• 关键词: SHINE; Postdoc; Interplanetary; Scintillation; IPS

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).In this work, the Principal Investigator (PI) will use interplanetary scintillation (IPS) radio data collected by an international network of ground-based radio telescopes and antenna arrays, as well as Thomson-scattered white-light observations from space-based instruments on the Solar Mass Ejection Imager (SMEI) and STEREO spacecraft, in order to develop 3D tomographic reconstructions of solar plasma structures in the inner heliosphere. Such structures include coronal mass ejections (CMEs) and co-rotating interaction regions (CIRs).The PI will extract solar wind parameters such as velocity, density, and magnetic field from his 3D reconstructions and compare these with multi-point in situ solar wind measurements from spacecraft such as ACE, STEREO, Ulysses, and Wind. The PI's 3D reconstructions can also be used to better constrain analyses of extremely-long-baseline (ELB) IPS observations, such as those recorded by the European Incoherent SCATter (EISCAT) radar, the EISCAT Svalbard Radar (ESR), and the Multi-Element Radio-Linked Interferometer Network (MERLIN) radio telescopes. This PI also has well-established links to IPS research groups at STELab in Japan and the Ootacamund Radio Telescope in India. Because of his multiple international collaborations, the PI has unique experience with such ELB analyses, which will allow the extraction of finer details in plasma spatial structure using images from spacecraft. The broader impacts of this study are manifold. The 3D reconstructions and ELB analyses planned here offer the potential to transform the field of heliospheric physics, by providing a global context for discovering the physical principles underpinning space weather phenomena that affect the Earth. The PI's technique makes visible a region between the Sun and the Earth whose behavior is difficult to forecast. The 3D reconstruction method improves space weather forecasts in this region, and will make them more accurate. The 3D reconstruction images and movies that are produced by this approach provide a valuable educational tool, as well as an aid to planning future spacecraft missions and new ground-based observatories.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。在这项工作中，首席研究员（PI）将使用由地面射电望远镜和天线阵列组成的国际网络收集的行星际闪烁（IPS）无线电数据，以及来自太阳质量弹射成像仪（SMEI）和STEREO航天器上的天基仪器的汤姆森散射白光观测，以开发太阳内日球层等离子体结构的三维层析重建。这类结构包括日冕物质抛射（cme）和同向旋转相互作用区（CIRs）。PI将从他的3D重建中提取太阳风参数，如速度、密度和磁场，并将这些参数与ACE、STEREO、尤利西斯和wind等航天器的多点原位太阳风测量结果进行比较。PI的3D重建还可以用于更好地约束对极长基线（ELB） IPS观测的分析，例如欧洲非相干散射（EISCAT）雷达、EISCAT斯瓦尔巴德雷达（ESR）和多元素无线电连接干涉仪网络（MERLIN）射电望远镜记录的观测。该项目还与日本STELab和印度Ootacamund射电望远镜的IPS研究小组建立了良好的联系。由于他的多次国际合作，PI在这种ELB分析方面拥有独特的经验，这将允许使用航天器图像提取等离子体空间结构的更精细细节。这项研究的广泛影响是多方面的。这里计划的3D重建和ELB分析提供了改变日球层物理学领域的潜力，为发现影响地球的空间天气现象的物理原理提供了一个全球背景。PI的技术使太阳和地球之间的一个区域变得可见，而这个区域的行为很难预测。三维重建方法改善了该地区的空间天气预报，并将使其更加准确。通过这种方法产生的3D重建图像和电影提供了一个有价值的教育工具，也有助于规划未来的航天器任务和新的地面天文台。