Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 89: Axions/ALPs III

T 89.4: Vortrag

Freitag, 4. April 2025, 09:45–10:00, VG 0.110

Solar axion couplings from the Nuclear Spectroscopic Telescope Array — •Jaime Ruz and Julia Vogel — Fakultät für Physik. Technische Universität Dortmund. Dortmund, D-44221, Germany

Data from the Nuclear Spectroscopic Telescope Array (NuSTAR) collected during the 2020 solar minimum, along with advanced solar atmospheric magnetic field models, establish a new limit on the axion-photon coupling strength g_aγ 6.9× 10⁻¹² GeV⁻¹ at 95% C.L. for axion masses m_a 2× 10⁻⁷ eV. This constraint surpasses current ground-based experimental limits, studying previously unexplored regions of the axion-photon coupling parameter space up to masses of m_a 5× 10⁻⁴ eV. These findings mark a significant advancement in our ability to probe axion properties and strengthen indirect searches for dark matter candidates.

Keywords: axion; ALP; NuSTAR; solar