Multiwavelength view of SPT-CL J2106-5844

SPT-CL J2106-5844 is among the most massive galaxy clusters at z>1 yet discovered. While initially used in cosmological tests to assess compatibility with $\Lambda$CDM cosmology of such a virialized object this redshift, more recent studies indicate undergoing major merger, and not an isolated system singular, well-defined halo. We use sensitive, high spatial resolution measurements from ALMA ACA thermal SZ effect reconstruct pressure distribution intracluster medium system. These are coupled radio observations EMU pilot survey, using ASKAP ATCA search for diffuse nonthermal emission. Further, better constrain thermodynamic structure cluster, we complement our analysis reprocessed archival $Chandra$ observations. fit ALMA+ACA data $uv$-space Bayesian forward modelling technique. The processed imaged specifically highlight any potential In data, reliably identify significance two main gas components associated mass clumps inferred weak lensing. Our statistical test excludes ~9.9$\sigma$ level possibility describing single component. had been difficult X-ray alone, find that bimodal supported by hardness distribution. reveal ~400 kpc projected extent along northwest-southeast direction, indicative strong activity active galactic nucleus within brightest cluster galaxy. Interestingly, putative optical star-forming filamentary detected HST image excellent alignment structure, albeit on smaller scale.