Department of Mechanical and Aerospace Engineering (MAE) Seminar
Dr. Keiji Hayashi
New Jersey Institute of Technology
Will present a talk titled:
Space Weather and Modeling of Solar Magnetic Evolutions
Abstract:
Although the Sun appears constant and unchanging over time, it electromagnetically varies quickly and often abruptly. Sudden changes in the magnetic field on the solar surface and in the solar corona (the atmosphere of the Sun) cause solar flares at the solar sunspot. The impact of the flares includes the eruption of the materials toward the interplanetary space. When the erupted materials reach the Earth, the Earth’s electromagnetic environment can be disturbed. Aurora is a manifestation of such geomagnetic disturbance. The infrastructures, such as artificial satellites, radio telecommunications, and power grid systems, are often disrupted by the sudden changes in the space environment. As such, it is important to understand the electromagnetic conditions in space, that is, space weather.
This seminar talk offers our investigation efforts on modeling for space weather, such as the time-dependent magnetohydrodynamics simulations of the solar active regions (sunspots) driven by the evolving sunspot magnetic field, to simulate the magnetic evolution from the solar sunspot region, the solar corona, and the interplanetary space.
Date: September 6, 2024
Location: Snell 212
Time: 11:00 am
ZOOM Link for virtual attendance:
https://clarkson.zoom.us/j/93541691606?pwd=cggjBnvRrYbr7mPOCqmmThM0lOOzOd.1
You can access this link by going to the Virtual Class & Recordings tab in Moodle.
Bio: Dr. Keiji Hayashi is a solar physicist studying the solar flare and coronal mass ejection by means of nonlinear three-dimensional time-dependent magnetohydrodynamics. He received B.S., M.S., and Ph.D. degrees from University of Tokyo. He is a research professor at Center for Computational Heliophysics, New Jersey Institute of Technology.