Characterizing turbulence in galaxy clusters: Defining turbulent energies and assessing multi-scale versus fixed-scale filters
The research used real-space filtering operators to separate bulk motion from turbulence in galaxy cluster simulations. It found that turbulent pressure fractions are low, peaking at 5% near merger cores and decaying later. The study advocates for fixed-scale filtering over iterative methods to reliably define consistent kinetic and magnetic energies.