Detecting fluorescent dark matter with X-ray lasers.
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Publication Date
2018Journal Title
Eur Phys J C Part Fields
ISSN
1434-6044
Publisher
Springer Science and Business Media LLC
Volume
78
Issue
6
Pages
512
Language
eng
Type
Article
Physical Medium
Print-Electronic
Metadata
Show full item recordCitation
Day, F., & Fairbairn, M. (2018). Detecting fluorescent dark matter with X-ray lasers.. Eur Phys J C Part Fields, 78 (6), 512. https://doi.org/10.1140/epjc/s10052-018-5994-7
Abstract
Fluorescent dark matter has been suggested as a possible explanation of both the 3.5 keV excess in the diffuse emission of the Perseus Cluster and of the deficit at the same energy in the central active galaxy within that cluster, NGC 1275. In this work we point out that such a dark matter candidate can be searched for at the new X-ray laser facilities that are currently being built and starting to operate around the world. We present one possible experimental set up where the laser is passed through a narrow cylinder lined with lead shielding. Fluorescent dark matter would be excited upon interaction with the laser photons and travel across the lead shielding to decay outside the cylinder, in a region which has been instrumented with X-ray detectors. For an instrumented length of 7 cm at the LCLS-II laser we expect O (1-10) such events per week for parameters which explain the astronomical observations.
Sponsorship
Peterhouse
Funder references
Science and Technology Facilities Council (ST/P000681/1)
Identifiers
External DOI: https://doi.org/10.1140/epjc/s10052-018-5994-7
This record's URL: https://www.repository.cam.ac.uk/handle/1810/284107
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