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Título:
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Is it possible to explore Peccei-Quinn axions from frequency dependence radiation dimming?
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Autor/a:
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Jiménez, Raúl (Jiménez Tellado); Peña Garay, Carlos; Verde, Licia
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Otros autores:
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Universitat de Barcelona |
Abstract:
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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. |
Materia(s):
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-Estels nans -Partícules (Física nuclear) -Cromodinàmica quàntica -Dwarf stars -Particles (Nuclear physics) -Quantum chromodynamics |
Derechos:
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(c) Elsevier B.V., 2011
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Tipo de documento:
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Artículo Artículo - Versión aceptada |
Editor:
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Elsevier B.V.
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