  We study electromagnetic radiation by a fast particle carrying electric
charge in chiral medium. The medium is homogeneous and isotropic and supports
the chiral magnetic current which renders the fermion and photon states
unstable. The instability manifests as the chirality-dependent resonances in
the bremsstrahlung cross section, which enhance the energy loss in the chiral
medium. We compute the corresponding cross sections in the single scattering
approximation and derive the energy loss in the high energy approximation.
