SMuK 2023 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 70: Cosmic Ray III
T 70.3: Vortrag
Mittwoch, 22. März 2023, 16:20–16:35, POT/0013
Modeling of the Galactic Cosmic-Ray Antiproton Flux — •Thomas Pöschl1, Laura Fabbietti1, Maximilian Horst1, Laura Serksnyte1, and Andrew Strong2 — 1Technische Universität München, Garching, Deutschland — 2Max-Planck-Institut für extraterrestrische Physik, Garching, Deutschland
Cosmic-ray particles are an excellent probe to study processes in our galaxy and can hint at exotic sources of energetic particles, such as dark-matter annihilation. In particular, cosmic-ray antinuclei are informative since these particles are expected to be only rarely produced in conventional reactions. However, the interpretation of cosmic antinuclei measurements requires a good understanding of all involved processes of the creation and propagation of the antiparticles and a realistic estimate of the involved modeling uncertainties to distinguish potential exotic contributions from ordinary production.
In this contribution, we review the current understanding of the production and propagation of charged cosmic rays in our galaxy and the thereon-based modeling of galactic cosmic-ray fluxes, with a special focus on cosmic-ray antiprotons. We quantify systematic deviations of the modeled flux that arise due to inaccuracies of the numerical solution of the propagation equation, different models of propagation processes, and different models of the antiproton-production cross section. Based on the found systematic uncertainties, we comment on the agreement between the modeled fluxes and recent measurements.
This research is funded by the DFG under Germany's Excellence Strategy - EXC2094 - 390783311.