The origin and evolution of solar energetic particles
Abstract
Particle acceleration by shocks is a fundamental physical process found throughout the Universe, but the acceleration mechanism is poorly understood. Astrophysical shock structure, how they accelerate thermal particles to high energy, and how those energetic particles evolve tend to be studied using simulations. The solar atmosphere (the corona) with its low density plasma threaded by magnetic field, offers a local laboratory for studying shock acceleration of particles at resolutions superior to that found elsewhere in the Universe. This proposed project will combine multi scale imaging and spectroscopic observations with in-situ measurements from the Parker Solar Probe and Solar Orbiter spacecraft to quantify the origin of energetic particles (particularly electrons) in the solar atmosphere and understand how they evolve from the Sun into the solar system. A unique combination of individual case studies and large-scale statistical analysis will enable the development of rigorous analysis techniques and provide scientific insight into the different particle acceleration mechanisms operating in the solar atmosphere. This project offers a novel approach to answering the fundamental problems of particle acceleration andtransport, and has significant implications for space weather forecasting of near-Earth space.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 05, 2025
- Source ID
- FA86552417392
Entities
People
- Peter T. Gallagher
Organizations
- Air Force Office of Scientific Research
- Dublin Institute for Advanced Studies
- United States Air Force