主持人：刘四明 教授

时 间：2022年10月8中午12：30

ZOOM：89607320616

题目：Solar GeV Particles and their Acceleration Processes

主讲人：Kazi Md Abul Firoz

Highest Academic Achievement

2004-2008 PhD in Cosmic Rays & Space Weather, University of Pavol Jozef Šafárik, Slovak Republic

Research Position Held

2009-2011 Korea Astronomy and Space Science Institute, South Korea

2011-2012 Worked at home while used RCMPS of Chittagong University as affiliation

2012-2013 Key Laboratory of Dark Matter & Space Astronomy, Purple Mountain Observatory, CAS, China

2013-2015 Space Research Group, University of Alcalá, Alcalá de Henares, Spain

2016-2016 Key Laboratory of Dark Matter & Space Astronomy, Purple Mountain Observatory, CAS, China

2017-2018 Space Weather Lab, Kyung Hee University, South Korea

2019-now Working at home using former institute as affiliation. Motivating students online towards research

Areas of specialization

Solar & Space Weather – Solar Particle events, Solar Flares, CME Shocks and Solar Radio bursts.

Award

2017 Razzaq-Shamsun Physics Award, Dhaka University, Bangladesh

Abstract of the Presentations:Solar GeV particle appearance is identified as a sudden, sharp and short-lived increase in the cosmic ray temporal evolution. Predictions of severe weather at near-Earth space can be performed on the ground instantly by inspecting the increased radiation exposure, which is always evident above the background of the GeV particle temporal evolution. Therefore, studying the GeV particle events is not only important for comprehension of the mechanism, but also vital for realizing the near-Earth space, and thus alarming the astronauts, pilots and aircrews in advance. Hence there is a strong demand to know why and how the GeV particle events take place. Solar flares or/and coronal mass ejection (CME)-associated shocks are the acceleration processes, which are always associated with the GeV particle events. However, there were many solar flares and CME shocks that did not cause GeV particle event. Thus, the GeV particle occurrence is still known as a mysterious event. My presentation will focus particularly on the GeV particles and their acceleration processes (e.g., flares; CME shocks) right after briefing some related issues (e.g., heliosphere; magnetosphere).