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Hunting Dark Matter Lines in the Infrared Background with the James Webb Space Telescope

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arxiv 2310.15395 v1 pith:RHY53EZ5 submitted 2023-10-23 hep-ph

Ryan Janish , Elena Pinetti This is my paper · ORCID
classification hep-ph
keywords darkmatterobservationsblankcasecdotdecaygamma
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Dark matter particles with a mass around 1 eV can decay into near-infrared photons. Utilising available public blank sky observations from the NIRSpec IFU on the James Webb Space Telescope (JWST), we search for a narrow emission line due to decaying dark matter and derive leading constraints in the mass range 0.8-3 eV on the decay rate to photons, and more specifically, on the axion-photon coupling for the case of axion-like particles. We exclude $\tau < 6.7\cdot 10^{26}$ s at $m_{\rm DM} \simeq 0.9$ eV and, in the case of axions, $g_{a \gamma \gamma} > 9.4 \cdot 10^{-12}$ GeV$^{-1}$ for $m_a = 2.15$ eV. Our results do not rely on dedicated observations, rather we use blank sky observations intended for sky subtraction, and thus our reach may be automatically strengthened as JWST continues to observe.

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Cited by 11 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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