HIGH ENERGY GAMMA RAYS. “However, the presence of interstellar medium makes the difference. Namely, accretion of interstellar gas on the MNS with O matter core can only heat it and induce X-ray emission. However, in the case of AMNS, the accreted gas will annihilate on the antimatter core producing gamma-rays with energies up to a GeV or so.” (MNS = mirror neutron stars; AMNS = anti-mirror neutron stars; (O = ordinary).
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