美国佛罗里达理工学院赵璐璐博士学术报告

报告题目：Modeling the releasing and precipitation pattern of solar energetic particles in the solar corona magnetic fields

报告人：赵璐璐 美国佛罗里达理工学院

时间：11月15日（周五）10:00

地点：闻天楼南楼213室

报告摘要：We present model calculations of solar energetic particle’s (SEP) transport through the complex solar coronal magnetic fields and the subsequent interplanetary space. Three-dimensional focused transport equations are solved numerically in the reconstructed coronal magnetic fields and the ideal parker interplanetary fields. All physical processes including focusing, adiabatic cooling, gradient/curvature drift, and diffusions are considered. This model is utilized to study the long-standing wide-spread characteristics in the SEP observations. The model is applied to several solar energetic particle events including a circumsolar event, 2011 November 3, in which SEPs are observed promptly after the solar event eruption by three spacecraft (the twin Solar TErrestrial RElations Observatories (STEREO-A and STEREO-B) and ACE) separated by more than 100° in longitude from each other. Energetic electrons at the energy of 100 keV are injected on the time-dependent coronal mass ejection (CME)-driven shock surfaces. The effect of the complex coronal magnetic field structure together with the perpendicular diffusion/meandering of field lines due to the photosphere supergranular motion is investigated. Moreover, different injection scenarios, including the compact solar flare, coronal mass ejection, and extreme ultraviolet wave are examined. This model is also applied to study the nonthermal emissions generated by the collision between the energetic particles and the ambient solar wind plasma. The underlying physics of the observational facts of the long-duration gamma-rays and gamma-rays coming from regions where no solar flares or coronal mass ejections is seen will also be studied.

报告人简介：

赵璐璐博士，2015年于The University of Alabama in Huntsville获得博士学位，目前在Florida Institute of Technology从事博士后研究工作。主要研究方向为日冕和行星际中的粒子加速和传播过程。