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arXiv · 2401.16747

Searching for Particle Dark Matter with eROSITA Early Data

Chingam Fong·Kenny C. Y. Ng·Qishan Liu
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Abstract

Many well motivated dark matter (DM) particle candidates can decay into detectable X-ray photons. We analyze the Final Equatorial Depth Survey (eFEDS) data from eROSITA early data release to search for unidentified X-ray lines that could indicate DM signals. Having discovered no anomalous signal, we set limits on DM decay rate in mass range between 1.8-18 keV, and constrain the parameter space of two DM particles: sterile neutrino and axion-like particles. Finally we also study the projected sensitivity of eROSITA full sky search, showing that eROSITA all-sky survey is expected to set the most stringent limits in the soft X-ray band.

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Chingam Fong, Kenny C. Y. Ng, Qishan Liu. 2024-01-30. Searching for Particle Dark Matter with eROSITA Early Data. https://doi.org/10.1103/f2dq-hq2j

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