Microwave gyrosynchrotron radio emission generated by nonthermal electrons intwisted magnetic loops is modelled using the recently developed simulation toolGX Simulator. We consider isotropic and anisotropic pitch-angle distributions.The main scope of the work is to understand impact of the magnetic fieldtwisted topology on resulted radio emission maps. We have found that nonthermalelectrons inside twisted magnetic loops produce gyrosynchrotron radio emissionwith peculiar polarization distribution. The polarization sign inversion lineis inclined relatively to the axis of the loop. Radio emission source is morecompact in the case of less twisted loop, considering anisotropic pitch-angledistribution of nonthermal electrons.
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