Titel
Neutron stars as photon double-lenses: Constraining resonant conversion into ALPs
Autor*in
Kyrylo Bondarenko
IFPU, Institute for Fundamental Physics of the Universe
Alexey Boyarsky
Institute Lorentz, Leiden University
... show all
Abstract
Axion-photon conversion is a prime mechanism to detect axion-like particles that share a coupling to the photon. We point out that in the vicinity of neutron stars with strong magnetic fields, magnetars, the effective photon mass receives comparable but opposite contributions from free electrons and the radiation field. This leads to an energy-dependent resonance condition for conversion that can be met for arbitrary light axions and leveraged when using systems with detected radio component. Using the magnetar SGR J1745-2900 as an exemplary source, we demonstrate that sensitivity to |gaγ|∼10−12GeV−1 or better can be gained for ma≲10−6eV, with the potential to improve current constraints on the axion-photon coupling by more than one order of magnitude over a broad mass range. With growing insights into the physical conditions of magnetospheres of magnetars, the method hosts the potential to become a serious competitor to future experiments such as ALPS-II and IAXO in the search for axion-like particles.
Stichwort
Axion-like particleAxion-photon resonant conversionMagnetar
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
phaidra.univie.ac.at/o:2071714
Erschienen in
Titel
Physics Letters B
Band
846
ISSN
0370-2693
Erscheinungsdatum
2023
Publication
Elsevier BV
Fördergeber
Europäische Union (alle Programme) — 694896
Erscheinungsdatum
2023
Zugänglichkeit
Rechte
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