Statistical Description of Synchrotron Intensity Fluctuations: Studies of Astrophysical Magnetic Turbulence

Understand

We provide a theoretical description of synchrotron fluctuations arising from magnetic turbulence.

• We derive an expression that relates the correlation of synchrotron fluctuations for an arbitrary index of relativistic electrons with the correlations of squared fluctuations of magnetic field component perpendicular to the line of sight.
• The latter correlations we study assuming that the turbulence is axisymmetric.
• We obtain general relations valid for an arbitrary model of magnetic turbulence and analyse the relations for particular example of magnetic turbulence that is supported by numerical simulations.