Journal article
Galaxy cluster thermal x-ray spectra constrain axionlike particles
- Abstract:
- Axion-like particles (ALPs) and photons inter-convert in the presence of a magnetic field. At keV energies in the environment of galaxy clusters, the conversion probability can become unsuppressed for light ALPs. Conversion of thermal X-ray photons into ALPs can introduce a step-like feature into the cluster thermal bremsstrahlung spectrum, and we argue that existing X-ray data on galaxy clusters should be sufficient to extend bounds on ALPs in the low-mass region ma . 1 × 10−12 eV down to M ∼ 7 × 1011 GeV, and that for 1011 GeV < M . 1012 GeV light ALPs give rise to interesting and unique observational signatures that may be probed by existing and upcoming Xray (and potentially X-ray polarisation) observations of galaxy clusters.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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Access Document
- Files:
-
-
(Preview, Accepted manuscript, pdf, 781.6KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevD.93.123526
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review D More from this journal
- Volume:
- 93
- Issue:
- 12
- Article number:
- 123526
- Publication date:
- 2016-06-01
- Acceptance date:
- 2016-06-15
- DOI:
- EISSN:
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2470-0029
- ISSN:
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2470-0010
- Pubs id:
-
pubs:633438
- UUID:
-
uuid:9861caf3-7a91-4991-aa97-d707aea868ba
- Local pid:
-
pubs:633438
- Source identifiers:
-
633438
- Deposit date:
-
2016-07-12
Terms of use
- Copyright holder:
- American Physical Society
- Copyright date:
- 2016
- Notes:
- Copyright © 2016 American Physical Society. This is the accepted manuscript version of the article. The final version is available online from American Physical Society at: http://dx.doi.org/10.1103/PhysRevD.93.123526
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