Formation of Annihilation-Cyclotron Lines in Strong Magnetic Fields Near Neutron Stars |
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| Authors: | Belyanin A A Kocharovsky V V Kocharovsky Vl V |
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| Institution: | (1) Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia |
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| Abstract: | We study cyclotron and polarization spectral features in magnetized vacuum at frequencies near the one-photon annihilation resonance in a subcritical magnetic field. On the basis of this study, we propose a new method for determination of the neutron-star magnetic field. Using the dipole-field model, we show that detection of the annihilation line in absorption and an additional line in emission at MeV energies is evidence of the existence of a magnetic field (2.8-3.6)· 1012G on the surface of a neutron star. |
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