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MagneticFields

Magnetic fields are produced in the Early Universe either in inflation epoch or during phase transitions. In this later case they can be produced together with primordical gravitational waves. Produced spectrum of magnetic fields changes due to their evolution in the hot Universe. Later after recombination epoch 3D spacial distribution of magnetic fields also changes, following Large Scale Structure formation. In the present epoch, once can look for the primordial magnetic field in the voids of Large Scale Structure with gamma-ray telescopes.