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arXiv · 2306.03925

Uncovering axion-like particles in supernova gamma-ray spectra

Francesca Calore·Pierluca Carenza·Christopher Eckner·Maurizio Giannotti·Giuseppe Lucente·Alessandro Mirizzi·Francesco Sivo
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Abstract

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 \emph{Fermi} Gamma-Ray Space Telescope. The observation of gamma-ray emission from a future SN has a sensitivity to $g_{a\gamma}\gtrsim 4\times 10^{-13}$ 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 $\sim2$, mainly due to the uncertainties on the modeling of the Galactic magnetic field.

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Francesca Calore, Pierluca Carenza, Christopher Eckner, Maurizio Giannotti, Giuseppe Lucente, Alessandro Mirizzi, Francesco Sivo. 2023-06-06. Uncovering axion-like particles in supernova gamma-ray spectra. https://doi.org/10.1103/physrevd.109.043010

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