If you are interested in attending, please contact Jeremy Averyt (firstname.lastname at lasp.colorado.edu) to be added to the mailing list.
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Abstract:
Mesoscale dynamics are a fundamental science priority in space physics, but fall within an observational gap of current and planned missions. Particularly in the solar wind, the mesoscale (spatial scales of around 0.5 Mkm to 10’s Mkm) is crucial for understanding the connection of the corona to an observer anywhere within the heliosphere, as well as for revealing the currently unresolved physics regulating particle acceleration and transport, magnetic field topology, and the causes for variability in the composition and acceleration of solar wind plasma. Multi-point measurements with mesoscale separations are required to address this fundamental gap in our understanding, as studies using single-point observations generally do not allow for investigations into cross-scale and mesoscale solar wind dynamics and plasma variability, nor do they allow for the exploration of sub-structuring of large-scale solar wind structures such as coronal mass ejections (CMEs) and co-rotating interaction regions (CIRs). These science questions necessitate simultaneous observations from multiple spacecraft at mesoscale separations. The baseline Heliospheric Distributed In-Situ Constellation (HelioDISC) mission requires a constellation in Earth-trailing heliocentric orbits near 1 au with inter-spacecraft separations varying from 100s RE (0.5 Mkm) early in the mission to few degrees in heliographic longitude (10’s Mkm) late in the mission. Each HelioDISC spacecraft will carry an identical payload, enabling simultaneous, longitudinally-separated observations from identical and inter-calibrated instrumentation primarily focusing on in situ plasma, fields, and particle measurements. This presentation will outline the mission architecture and payload of the HelioDISC mission, and how this mission will advance our understanding of the fundamental nature of the solar wind.
The Physics Frontiers Centers (PFC) program supports university-based centers and institutes where the collective efforts of a larger group of individuals can enable transformational advances in the most promising research areas. The program is designed to foster major breakthroughs at the intellectual frontiers of physics by providing needed resources such as combinations of talents, skills, disciplines, and/or specialized infrastructure, not usually available to individual investigators or small groups, in an environment in which the collective efforts of the larger group can be shown to be seminal to promoting significant progress in the science and the education of students. PFCs also include creative, substantive activities aimed at enhancing education, broadening participation of traditionally underrepresented groups, and outreach to the scientific community and general public.