[IGPP Everyone] Tomorrow: Space Physics Seminar - Fri. Feb. 26th - 3:30pm - The HelioSwarm MIDEX Mission Concept: Unraveling the Nature of Turbulence in Space Plasmas (H. Spence, UNH)

[Emmanuel V. Masongsong]

SPACE PHYSICS SEMINAR 




DEPARTMENT OF EARTH, PLANETARY, AND SPACE SCIENCES 

DEPARTMENT OF ATMOSPHERIC AND OCEANIC SCIENCES 

UNIVERSITY OF CALIFORNIA, LOS ANGELES 




ZOOM Link: https://ucla.zoom.us/j/94454128469?pwd=Qm9OSmZZekN5S0RoVTFITEs0N296QT09 

Meeting ID: 944 5412 8469 Passcode: 263337 



The HelioSwarm MIDEX Mission Concept: Unraveling the Nature of Turbulence in Space Plasmas 

Harlan Spence 
Univ. New Hampshire 

Plasmas are ubiquitous in the universe and are governed by highly dynamic, coupled physical processes operating on a vast range of scales from the microphysical (electron kinetics) to the galactic (magnetohydrodynamics). Characterizing how turbulence transfers energy across these scales and studying its eventual dissipation are open challenges in understanding heliospheric and astronomical objects; resolving the behavior of these complex three-dimensional, multi-scale turbulent structures requires contemporaneous spatially and temporally distributed measurements. HelioSwarm (HS) is a NASA MIDEX mission in formulation that will deploy eight co-orbiting instrumented “node” satellites from an instrumented communications “hub" to investigate turbulence in the solar wind, which serves as a natural laboratory for understanding this fundamental, universal process. HelioSwarm focuses on a currently poorly understood portion of the space plasma energy cascade, the part in which turbulent eddies transition from the MHD scale to the sub-MHD scale where the turbulence dissipates through ion heating. 

This talk will begin by providing scientific motivations for the HelioSwarm mission, leading next to the overarching science question, two science goals, and six science objectives. The next part of the presentation will focus on HelioSwarm's science implementation, including an overview of how the mission architecture meets the requirements needed to achieve science closure. It will describe various mission elements, including: the science payload, flight dynamics strategies needed to achieve multi scale separations of the swarm spacecraft, the choice of orbit, etc. Finally, the talk will describe expected HelioSwarm data products and solicit community feedback. 



Friday, February 26, 2021 

3:30 - 5:00 PM 




In-Charge: Vassilis Angelopoulos 

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