SIMBAD references

2019MNRAS.484.3573C - Mon. Not. R. Astron. Soc., 484, 3573-3581 (2019/April-2)

Improving statistical sensitivity of X-ray searches for axion-like particles.


Abstract (from CDS):

X-ray observations of bright AGNs in or behind galaxy clusters offer unique capabilities to constrain axion-like particles. Existing analysis technique relies on measurements of the global goodness of fit. We develop a new analysis methodology that improves the statistical sensitivity to ALP-photon oscillations by isolating the characteristic quasi-sinusoidal modulations induced by ALPs. This involves analysing residuals in wavelength space allowing the Fourier structure to be made manifest as well as a machine learning approach. For telescopes with microcalorimeter resolution, simulations suggest these methods give an additional factor of 2 in sensitivity to ALPs compared to previous approaches.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): astroparticle physics - elementary particles

Simbad objects: 5

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