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The Madala hypothesis was proposed by members of the Wits-ATLAS group toaccount for several anomalies in both ATLAS and CMS data at the LHC. Thishypothesis extends the standard model through the addition of two scalar bosonsand a hidden sector that can provide a dark matter candidate. This hiddensector interacts with the standard model only through the mediation of one ofthese scalars S. The couplings of S are not amenable to investigation incurrent collider data and so are assumed to be Higgs-like to reduce theparameter space of the model. Our previous work (Beck & Colafrancesco 2016) hasshown that these couplings can be limited via indirect dark matter detectionexperiments in gamma-rays (for resonant annihilations into S). Here we willtreat the dark matter and S masses independently, and we generalise ourprevious work and examine what fraction of the cosmological dark matterabundance can be accounted for by particles in the hidden sector of the Madalahypothesis dark matter when these annihilate to standard model products via aHiggs-like S. We will also extend our gamma-ray analysis of Madala hypothesisdark matter to include the constraints of diffuse radio data from the Comagalaxy cluster in addition to the Fermi-LAT gamma-ray data from both thistarget and the Reticulum II dwarf galaxy.  Our analysis indicates that either the Madala hypothesis cannot provide thebulk of cosmological dark matter, or the S boson cannot be simply Higgs-like.These apply unless the candidate particle exceeds a mass of 200 GeV. Both thesescenarios may reduce the attractiveness of the hypothesis as the second casewill imply that many free parameters must be added to describe S, greatlyweakening fits for the model. To investigate the full consequences of thisfurther work will necessitate using larger astrophysical data sets to stronglyconstrain details about S.

Exploring the Potential of the Dark Matter Candidate from the Madala Hypothesis with Multi-frequency Indirect Detection