Presented By: Climate and Space Sciences and Engineering
CLASP Seminar Series: Lulu Zhao, of U-M CLASP
Lulu Zhao, of U-M CLASP will give a virtual lecture as part of the CLASP Seminar Series. Please join us!
This is a Zoom virtual event.
Zoom link: https://umich.zoom.us/j/92764378588?pwd=VE8zZWpGOTBjaWd1N2VvNWZvNmN0QT09
Meeting ID: 927 6437 8588
Passcode: 421507
TITLE: Solar Energetic Particles
ABSTRACT: Solar flares and coronal mass ejections are the most powerful solar explosive events occurred on the Sun. In large solar flares, a wide range of electromagnetic waves ranging from the kilometric radio wave to the Gamma-rays are released in a short period of time and a gigantic amount of ionized gas is ejected in the coronal mass ejections. In those processes, solar energetic particles can be accelerated to near-relativistic energies and injected into the interplanetary space. When traveling in the interplanetary space, they impose a serious radiation hazard to human lives on the earth, the orbiting astronauts, spacecraft, and our future space exploration missions. However, the underlying acceleration mechanisms in those events and the particles’ transport process from the sun to the interplanetary space is still under debate. I investigate the behaviors of those energetic particles with observational analysis, and model their behavior using numerical simulations. In particular, I modeled the acceleration and transport process of energetic particles by solving the Fokker-Planck equation numerically and evaluate the temporal and spatial distribution profiles, energy spectra, and element abundances of energetic particles with the measurement made by various spacecraft. Because of their great impact to the space radiation environment and the growing demand for space travel and exploration, a successful forecast of the occurrence and flux of solar energetic particles is urgent. Both numerical models and machine learning techniques are utilized in my current approach to predict the occurrence and flux of solar energetic particles.
This is a Zoom virtual event.
Zoom link: https://umich.zoom.us/j/92764378588?pwd=VE8zZWpGOTBjaWd1N2VvNWZvNmN0QT09
Meeting ID: 927 6437 8588
Passcode: 421507
TITLE: Solar Energetic Particles
ABSTRACT: Solar flares and coronal mass ejections are the most powerful solar explosive events occurred on the Sun. In large solar flares, a wide range of electromagnetic waves ranging from the kilometric radio wave to the Gamma-rays are released in a short period of time and a gigantic amount of ionized gas is ejected in the coronal mass ejections. In those processes, solar energetic particles can be accelerated to near-relativistic energies and injected into the interplanetary space. When traveling in the interplanetary space, they impose a serious radiation hazard to human lives on the earth, the orbiting astronauts, spacecraft, and our future space exploration missions. However, the underlying acceleration mechanisms in those events and the particles’ transport process from the sun to the interplanetary space is still under debate. I investigate the behaviors of those energetic particles with observational analysis, and model their behavior using numerical simulations. In particular, I modeled the acceleration and transport process of energetic particles by solving the Fokker-Planck equation numerically and evaluate the temporal and spatial distribution profiles, energy spectra, and element abundances of energetic particles with the measurement made by various spacecraft. Because of their great impact to the space radiation environment and the growing demand for space travel and exploration, a successful forecast of the occurrence and flux of solar energetic particles is urgent. Both numerical models and machine learning techniques are utilized in my current approach to predict the occurrence and flux of solar energetic particles.
Explore Similar Events
-
Loading Similar Events...
