A radio-frequency search for WIMPs in RXC J0225.1-2928

TL;DR

This paper uses radio observations from MeerKAT to set new upper limits on WIMP dark matter annihilation in galaxy cluster RXC J0225.1-2928, achieving results comparable to the best existing constraints.

Contribution

It introduces a robust morphological analysis of MeerKAT radio data to derive competitive upper limits on WIMP annihilation cross-section in galaxy clusters.

Findings

Derived upper limits on WIMP annihilation cross-section.

Results are comparable to the most stringent limits in literature.

Demonstrated effectiveness of radio data analysis for dark matter searches.

Abstract

Recent studies focusing on the use of radio data in indirect dark matter detection have led to a set of highly competitive limits on the WIMP annihilation cross-section, especially in light of high-resolution data from instruments like ASKAP and MeerKAT. In this work we present an analysis of radio observations of the RXC J0225.1-2928 galaxy cluster, taken from the recent MeerKAT Galaxy Cluster Legacy Survey public data release. We adopt a robust morphological analysis of this source that allows us to derive a set of upper-limits on the annihilation cross-section, and in our most constraining scenario these results are comparable to the most stringent limits yet found in the literature.