Quantum effects in synchronization radiation of a plasma in superstrong magnetic fields of neutron stars

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Gamma Ray Bursts, Neutron Stars, Quantum Mechanics, Space Plasmas, Stellar Magnetic Fields, Synchrotron Radiation, Electron Plasma, Particle Motion, Quantum Theory

Scientific paper

Synchrotron emission in magnetic fields of neutron stars is considered on the basis of quantum theory. The quantization of transverse electron motion in a magnetic field is important for b greater than or = epsilon(epsilon - 1) where b = B/4.4 times 10 to the 13 th power G, epsilon is a typical electron energy in units of mc sq. The quantum recoil of a radiating electron is significant for b greater than or = (epsilon - 1)/epsilon sq. Quantization of electron motion leads to asymmetric peaks in the radiation spectra at the energies h omega = mcsq (root 1 + 2 n'b - root 1 + 2 nb)/sin upsilon, where n', n = 0,1, ..., and upsilon is the angle between B and the wave vector. The quantum recoil softens the spectra. The quantum effects change characteristics of maser instabilities in strongly magnetized plasmas.

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