Supernova axions convert to gamma-rays in magnetic fields of progenitor stars
| Autor: | Manzari, Claudio Andrea, Park, Yujin, Safdi, Benjamin R., Savoray, Inbar |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | It has long been established that axions could have been produced through the Primakoff process within the nascent proto-neutron-star formed following the type II supernova SN1987A, escaped the star due to their weak interactions, and then converted to gamma-rays in the Galactic magnetic fields; the non-observation of a gamma-ray flash coincident with the neutrino burst leads to strong constraints on the axion-photon coupling for axion masses $m_a \lesssim 10^{-10}$ eV. In this work we use SN1987A to constrain, for the first time, higher mass axions, all the way to $m_a \sim 10^{-3}$ eV, by accounting for axion-photon conversion on the still-intact magnetic fields of the progenitor star. Moreover, we show that gamma-ray observations of the next Galactic supernova, leveraging the magnetic fields of the progenitor star, could detect quantum chromodynamics axions for masses above roughly $50$ $\mu$eV, depending on the supernova. We propose a new full-sky gamma-ray satellite constellation that we call the GALactic AXion Instrument for Supernova (GALAXIS) to search for such future signals along with related signals from extragalactic neutron star mergers. Comment: 10+18 pages, 3+20 figures, video abstract at https://youtu.be/QiNonlkARps |
| Databáze: | arXiv |
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