Speaker
Description
Core-collapse Supernovae (SNe) are considered among the most promising astrophysical laboratories to study the phenomenology of axion-like particles (ALPs). Because of the extreme condition of temperature and density reached in the core of the exploding star, ALPs can be copiously produced by means of their interactions with nuclear matter. In this talk, I will discuss how a large emission of ALPs during a SN event could induce observable signatures, as the shortening of the duration of the expected SN neutrino burst or the trigger of ALP-induced events in neutrino water Cherenkov detectors [1]. Moreover, in presence of a photon coupling, ALPs could generate unexpected gamma-ray signatures which could be constrained by observations of current and future gamma-ray detectors [2]. Finally, I will discuss how the advent of the International AXion Observatory (IAXO) could open promising perspectives for the detection of axions emitted from a future nearby SN event [3].
[1] A. Lella, G. Co', P. Carenza, G. Lucente, M. Giannotti, A. Mirizzi, T. Rauscher, ``Getting the most on supernova axions'', Phys.Rev.D 109 (2024) no.2, 023001 [arXiv:2306.01048 [hep-ph]].
[2] A. Lella, E. Ravensburg, P. Carenza, M.C.D. Marsh, ``Supernova limits on QCD axionlike particles'', Phys.Rev.D 110 (2024) no.4, 043019 [arXiv:2405.00153 [hep-ph]].
[3] P. Carenza, J. A. Garcia Pascual, M. Giannotti, I. G. Irastorza, M. Kaltschmidt, A. Lella, A. Lindner, G. Lucente, A. Mirizzi, M. J. Puyuelo, ``Detecting Supernova Axions with IAXO'', 2502.19476 [hep-ph].
