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T: Fachverband Teilchenphysik
T 60: Gamma astronomy 3
T 60.4: Vortrag
Mittwoch, 6. März 2024, 16:45–17:00, Geb. 30.22: kl. HS A
Uncovering axion-like particles in supernova gamma-ray spectra — •Giuseppe Lucente1,2,6,7, Francesca Calore3, Pierluca Carenza4, Christopher Eckner3, Maurizio Giannotti5, Alessandro Mirizzi6,7, and Francesco Sivo6,7 — 1Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, 69120, Heidelberg, Germany — 2Universität Heidelberg, Kirchhoff-Institut für Physik, Im Neuenheimer Feld 227, 69120 Heidelberg, Germany — 3LAPTh, CNRS, F-74000 Annecy, France — 4The Oskar Klein Centre, Department of Physics, Stockholm University, Stockholm 106 91, Sweden — 5Centro de Astroparticulas y Fisica de Altas Energias (CAPA), Universidad de Zaragoza, Zaragoza, 50009, Spain — 6Dipartimento Interateneo di Fisica “Michelangelo Merlin”, Via Amendola 173, 70126 Bari, Italy. — 7Istituto Nazionale di Fisica Nucleare - Sezione di Bari, Via Orabona 4, 70126 Bari, Italy.
A future Galactic Supernova (SN) explosion can lead to a gamma-ray signal induced by ultralight Axion-Like Particles (ALPs) thermally produced in the SN core and converted into high-energy photons in the Galactic magnetic field. The detection of such a signal is in the reach of the Large Area Telescope aboard the Fermi Gamma-Ray Space Telescope. The observation of gamma-ray emission from a future SN has a sensitivity to gaγ 4× 10−13 GeV−1 for a SN at fiducial distance of 10 kpc and would allow us to reconstruct the ALP-photon coupling within a factor of ∼2, mainly due to the uncertainties on the modeling of the Galactic magnetic field.
Keywords: axion-like particles; Fermi-LAT; gamma ray telescopes; supernova; axion-photon conversion