Science Seminars

The Power of Magnetospheric Soft X-ray Imaging

Speaker: David Sibeck (NASA/GSFC)
Date: Thursday, Aug 13, 2020
Time: 4:00 PM
Location: Zoom

Seminar Abstract:

Heliophysicists seek to understand the complex nature of the solar wind’s global interaction with the terrestrial magnetosphere. Historically, they have employed single or multipoint local in-situ field and particle observations, made at times when spacecraft were fortuitously located (e.g., a magnetopause crossing), in conjunction with local and global simulations to gain insight into the global interaction. This presentation describes results from numerical simulations and past observations by astrophysical missions to show how soft X-ray imaging provides the perspective necessary to determine the global significance of proposed dayside and nightside interaction mechanisms, such as steady or transient, local or global reconnection, for which in-situ measurements rarely suffice. By defining the morphology of magnetospheric plasma density structures, we can routinely determine the global extent, variation, and significance of these interaction modes.