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• W3105352021 endingPage "026" @default.
• W3105352021 startingPage "026" @default.
• W3105352021 abstract "We show that the soft X-ray excess in the Coma cluster can be explained by a cosmic background of relativistic axion-like particles (ALPs) converting into photons in the cluster magnetic field. We provide a detailed self-contained review of the cluster soft X-ray excess, the proposed astrophysical explanations and the problems they face, and explain how a 0.1- 1 keV axion background naturally arises at reheating in many string theory models of the early universe. We study the morphology of the soft excess by numerically propagating axions through stochastic, multi-scale magnetic field models that are consistent with observations of Faraday rotation measures from Coma. By comparing to ROSAT observations of the 0.2- 0.4 keV soft excess, we find that the overall excess luminosity is easily reproduced for gaγγ ∼ 2 × 10-13 Ge -1. The resulting morphology is highly sensitive to the magnetic field power spectrum. For Gaussian magnetic field models, the observed soft excess morphology prefers magnetic field spectra with most power in coherence lengths on (3 kpc) scales over those with most power on (12 kpc) scales. Within this scenario, we bound the mean energy of the axion background to 50 eV≲ ⟨ Ea ⟩ ≲ 250 eV, the axion mass to ma ≲ 10-12 eV, and derive a lower bound on the axion-photon coupling gaγγ ≳ √(0.5/Δ Neff) 1.4 × 10-13 Ge -1." @default.
• W3105352021 created "2020-11-23" @default.
• W3105352021 creator A5000818951 @default.
• W3105352021 creator A5016289121 @default.
• W3105352021 creator A5029522252 @default.
• W3105352021 creator A5057549902 @default.
• W3105352021 creator A5082979114 @default.
• W3105352021 date "2014-09-16" @default.
• W3105352021 modified "2023-09-26" @default.
• W3105352021 title "Soft X-ray excess in the Coma cluster from a Cosmic Axion Background" @default.
• W3105352021 cites W1547394035 @default.
• W3105352021 cites W1636404785 @default.
• W3105352021 cites W1659569605 @default.
• W3105352021 cites W1786963201 @default.
• W3105352021 cites W1938235276 @default.
• W3105352021 cites W1966519460 @default.
• W3105352021 cites W1970164547 @default.
• W3105352021 cites W1973887615 @default.
• W3105352021 cites W1974880491 @default.
• W3105352021 cites W1976306728 @default.
• W3105352021 cites W1977427402 @default.
• W3105352021 cites W1980937846 @default.
• W3105352021 cites W1982564673 @default.
• W3105352021 cites W1987984224 @default.
• W3105352021 cites W2000037069 @default.
• W3105352021 cites W2000555914 @default.
• W3105352021 cites W2001512228 @default.
• W3105352021 cites W2001750276 @default.
• W3105352021 cites W2001900713 @default.
• W3105352021 cites W2006888235 @default.
• W3105352021 cites W2007136268 @default.
• W3105352021 cites W2007415924 @default.
• W3105352021 cites W2014661987 @default.
• W3105352021 cites W2015582868 @default.
• W3105352021 cites W2016671168 @default.
• W3105352021 cites W2018690730 @default.
• W3105352021 cites W2021598093 @default.
• W3105352021 cites W2023491074 @default.
• W3105352021 cites W2023954600 @default.
• W3105352021 cites W2028649412 @default.
• W3105352021 cites W2030479277 @default.
• W3105352021 cites W2031249134 @default.
• W3105352021 cites W2032937327 @default.
• W3105352021 cites W2036314206 @default.
• W3105352021 cites W2039299930 @default.
• W3105352021 cites W2041249774 @default.
• W3105352021 cites W2042691992 @default.
• W3105352021 cites W2042887613 @default.
• W3105352021 cites W2050423273 @default.
• W3105352021 cites W2052926897 @default.
• W3105352021 cites W2054266069 @default.
• W3105352021 cites W2056683758 @default.
• W3105352021 cites W2060898192 @default.
• W3105352021 cites W2063898848 @default.
• W3105352021 cites W2065693920 @default.
• W3105352021 cites W2077471779 @default.
• W3105352021 cites W2085094651 @default.
• W3105352021 cites W2085785055 @default.
• W3105352021 cites W2095220758 @default.
• W3105352021 cites W2097335313 @default.
• W3105352021 cites W2098931512 @default.
• W3105352021 cites W2099504389 @default.
• W3105352021 cites W2100198528 @default.
• W3105352021 cites W2102182691 @default.
• W3105352021 cites W2107675258 @default.
• W3105352021 cites W2109290777 @default.
• W3105352021 cites W2114870168 @default.
• W3105352021 cites W2115618186 @default.
• W3105352021 cites W2119869058 @default.
• W3105352021 cites W2120274945 @default.
• W3105352021 cites W2124089317 @default.
• W3105352021 cites W2126979387 @default.
• W3105352021 cites W2139937287 @default.
• W3105352021 cites W2141623727 @default.
• W3105352021 cites W2141846045 @default.
• W3105352021 cites W2152458035 @default.
• W3105352021 cites W2155678178 @default.
• W3105352021 cites W2160931504 @default.
• W3105352021 cites W2162351375 @default.
• W3105352021 cites W2163617323 @default.
• W3105352021 cites W2166283712 @default.
• W3105352021 cites W2166504775 @default.
• W3105352021 cites W2597415892 @default.
• W3105352021 cites W2777120277 @default.
• W3105352021 cites W3036549998 @default.
• W3105352021 cites W3098049439 @default.
• W3105352021 cites W3098754223 @default.
• W3105352021 cites W3099150453 @default.
• W3105352021 cites W3099230304 @default.
• W3105352021 cites W3099244201 @default.
• W3105352021 cites W3099411440 @default.
• W3105352021 cites W3099484314 @default.
• W3105352021 cites W3099672527 @default.
• W3105352021 cites W3099855490 @default.
• W3105352021 cites W3100348208 @default.
• W3105352021 cites W3100420207 @default.
• W3105352021 cites W3100734881 @default.
• W3105352021 cites W3100983796 @default.

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