A research framework combining XRISM turbulent velocity maps with SKA rotation measure grids to break degeneracies between magnetic field strength and cosmic-ray energetics in galaxy clusters.
Probing Turbulence in the Coma Galaxy Cluster
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abstract
Spatially-resolved gas pressure maps of the Coma galaxy cluster are obtained from a mosaic of XMM-Newton observations in the scale range between a resolution of 20 kpc and an extent of 2.8 Mpc. A Fourier analysis of the data reveals the presence of a scale-invariant pressure fluctuation spectrum in the range between 40 and 90 kpc and is found to be well described by a projected Kolmogorov/Oboukhov-type turbulence spectrum. Deprojection and integration of the spectrum yields the lower limit of $\sim 10$ percent of the total intracluster medium pressure in turbulent form. The results also provide observational constraints on the viscosity of the gas.
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Unravelling Turbulence and Magnetic Fields in Galaxy Clusters with SKA and XRISM
A research framework combining XRISM turbulent velocity maps with SKA rotation measure grids to break degeneracies between magnetic field strength and cosmic-ray energetics in galaxy clusters.