Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990esasp.311..169k&link_type=abstract
In ESA, Plasma Astrophysics p 169-173 (SEE N91-15046 06-90)
Astronomy and Astrophysics
Astrophysics
Annihilation Reactions, Electron-Positron Plasmas, Neutron Stars, Particle Density (Concentration), Polarization (Waves), Radiation Spectra, Distribution Functions, Electron States, Electron-Positron Pairs, Landau Factor, Magnetic Fields, Power Series
Scientific paper
Intensity, polarization and cooling rate of the two photon annihilation radiations are studied in the case of one dimensional power law distributions of electron and positrons, assuming that they occupy the ground Landau level in a strong magnetic field. Simple analytical expressions for limiting cases are obtained and numerical calculations of radiations characteristics are presented. Power law electron/positron distributions are shown to generate power law spectra of the annihilation radiation with indices depending on direction of radiation. Power law-like hard tails observed in many gamma ray burst spectra may be associated with the annihilation of a magnetized plasma with the considered electron/proton distributions near the neutron star.
Kaminker A. D.
Mamradze P. G.
Pavlov George G.
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