Analysis of Radio Signatures Associated with the Origin, Nature, Dynamics and Interrelationship of Solar Transient Phenomena

这项提议的目的是利用对太阳的射电、白光和X射线观测以及就地等离子体和粒子数据，提供时间和动态约束，从而更好地从物理学角度理解影响近地空间环境的各种太阳瞬变现象(如日冕物质抛射和太阳高能粒子)的起源、性质、动力学和相互关系。PI的目标是确定太阳射电数据的解释如何从互补太阳观测施加的限制中受益，反之亦然。活动将集中在三个相互关联的领域：日冕物质抛射(CME)的起源和动力学、加速的太阳高能粒子的起源和传播，以及CME产生的射电辐射的太阳周期比较。为了进行这些调查，来自Wind、Ulysses、ISEE-3以及最终来自STEREO航天器的低频射电数据将通过地面射电观测以及软和硬X射线数据、CME高度-时间和密度数据、太阳图像以及现场太阳风等离子体和粒子数据进行扩充。将在适当的物理模型范围内对这些不同的观测结果进行分析，以实现对这些太阳瞬变现象之间的相互关系及其与空间气象的相关性的定量了解。这些综合分析将增进跟踪日冕物质系统和太阳高能粒子事件所需的知识，以改进空间天气预报，并量化11年太阳黑子周期内这些太阳瞬变的特征和动力学。由于影响范围更广，天体物理研究所将建立和维护一个关于观测到的第二/第四类无线电事件的网上公共数据库。他还将在收到这些数据时分析个别的第二类事件。这些初步分析的结果将通过电子邮件发送给其他研究人员和空间天气预报员。除了预测日冕物质抛射的速度分布和到达地球的时间外，PI的分析还将有助于将特定的太阳事件与空间天气事件联系起来。他将继续参加跨学科会议和研讨会[例如，SIRE、国际太阳周期研究(ISCS)和ELMAU/ISSI CME研讨会]，并将保持和加强他与悉尼大学理论小组，包括他们的博士生的合作。

The objective of this proposal is to use radio, white-light, and X-ray observations of the Sun, as well as in-situ plasma and particle data, to provide temporal and dynamic constraints that will lead to a better physics-based understanding of the origin, nature, dynamics, and interrelationship of individual solar transient phenomena (such as CMEs and solar energetic particles) that affect the near-Earth space environment. The PI's goal is to determine how the interpretation of solar radio data can benefit from the constraints imposed by complementary solar observations, and vice versa. The PI will focus on three interrelated areas: Coronal Mass Ejection (CME) origin and dynamics, the origin and propagation of accelerated solar energetic particles, and solar cycle comparisons of CME-generated radio emissions. To carry out these investigations, the low frequency radio data from the Wind, Ulysses, ISEE-3, and eventually STEREO spacecraft will be augmented with ground-based radio observations, as well as with soft and hard X-ray data, CME height-time and density data, solar images, and in-situ solar wind plasma and particle data. These various observations will be analyzed, within the context of appropriate physical models, to achieve a quantitative understanding of the interrelation of these solar transient phenomena and their relevance to space weather. These comprehensive analyses will advance the knowledge needed to track CMEs and solar energetic particle events to improve space weather predictions, as well as to quantify the characteristics and dynamics of these solar transients over the 11-year sunspot cycle.Contributing to broader impacts, the PI will establish and maintain a web-based public database of observed type II/IV radio events. He will also analyze individual type II events as these data are received. The results of these preliminary analyses will be e-mailed to other researchers and space weather forecasters. In addition to predicting the velocity profiles and Earth arrival times of CMEs, the PI's analyses will also help correlate particular solar events with space weather events. The PI will continue his participation in interdisciplinary conferences and workshops [e.g., SHINE, International Solar Cycle Studies (ISCS), and the Elmau/ISSI CME Workshops] and he will maintain and strengthen his collaboration with the theory group at the University of Sydney, including their Ph.D. students.