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Synthesis of Small and Large scale Dynamos
Kandaswamy Subramanian
Using a closure model for the evolution of magnetic correlations, we uncover an interesting plausible saturated state of the small-scale fluctuation dynamo (SSD) and a novel anolog…
Cosmic Microwave Background Polarization Signals from Tangled Magnetic Fields
T. R. Seshadri, Kandaswamy Subramanian
Tangled, primordial cosmic magnetic fields create small rotational velocity perturbations on the last scattering surface (LSS) of the cosmic microwave background radiation (CMBR).…
The helicity constraint in turbulent dynamos with shear
Axel Brandenburg, Alberto Bigazzi, Kandaswamy Subramanian
The evolution of magnetic fields is studied using simulations of forced helical turbulence with strong imposed shear. After some initial exponential growth, the magnetic field deve…
Large scale dynamos with ambipolar diffusion nonlinearity
Axel Brandenburg, Kandaswamy Subramanian
It is shown that ambipolar diffusion as a toy nonlinearity leads to very similar behaviour of large scale turbulent dynamos as full MHD. This is demonstrated using both direct simu…