2026-04-17T14:29:32Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1175872025-12-05T16:16:49Zcom_2072_1057col_2072_478904col_2072_478917

Is it possible to explore Peccei-Quinn axions from frequency dependence radiation dimming? Jiménez, Raúl (Jiménez Tellado) Peña Garay, Carlos Verde, Licia Estels nans Partícules (Física nuclear) Cromodinàmica quàntica Dwarf stars Particles (Nuclear physics) Quantum chromodynamics We explore how the Peccei-Quinn (PQ) axion parameter space can be constrained by the frequency-dependence dimming of radiation from astrophysical objects. To do so we perform accurate calculations of photon-axion conversion in the presence of a variable magnetic field. We propose several tests where the PQ axion parameter space can be explored with current and future astronomical surveys: the observed spectra of isolated neutron stars, occultations of background objects by white dwarfs and neutron stars, the light-curves of eclipsing binaries containing a white dwarf. We find that the lack of dimming of the light-curve of a detached eclipsing white dwarf binary recently observed, leads to relevant constraints on the photon-axion conversion. Current surveys designed for Earth-like planet searches are well matched to strengthen and improve the constraints on the PQ axion using astrophysical objects radiation dimming. 2017-11-09T15:57:03Z 2017-11-09T15:57:03Z 2011 2017-11-09T15:57:03Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0370-2693 https://hdl.handle.net/2445/117587 606092 eng Versió postprint del document publicat a: https://doi.org/10.1016/j.physletb.2011.08.019 Physics Letters B, 2011, vol. 703, num. 3, p. 232-236 https://doi.org/10.1016/j.physletb.2011.08.019 info:eu-repo/grantAgreement/EC/FP7/240117/EU//PHYS.LSS info:eu-repo/grantAgreement/EC/FP7/202182/EU//ACT (c) Elsevier B.V., 2011 info:eu-repo/semantics/openAccess 5 p. application/pdf Elsevier B.V. Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))