The Axion Signature of a Strange Quark Star in SGR 0501+4516

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Abstract

We study the axion effects on quark matter and quark-matter cores in strange quark magnetars using a three-flavor Nambu-Jona-Lasinio model to represent the charge-parity violating effects through the axion field. Here, axions decay to gamma rays in a very strong magnetic field, which the Fermi Large Area Telescope (Fermi-LAT), Imaging X-ray Polarimetry Explorer (IXPE), and XMM-Newton will be able to detect.

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europepmc
last seen: 2026-05-20T01:45:00.602351+00:00
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last seen: 2026-05-26T02:00:01.498150+00:00
License: CC-BY-4.0