Statistics – Computation
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...410..761u&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 410, no. 2, p. 761-763.
Statistics
Computation
16
Emission Spectra, Pulsars, White Dwarf Stars, X Ray Stars, Computational Astrophysics, Gamma Ray Astronomy, Particle Acceleration, Stellar Luminosity, Stellar Magnetic Fields, Stellar Rotation, Thermal Emission
Scientific paper
The X-ray pulsar 1E 2259+586 may be a single fast-rotating white dwarf with a strong magnetic field. In this case strong electric fields are generated in its magnetosphere. The outflowing electrons are accelerated by these electric fields to the ultrarelativistic energies and generate gamma-rays by means of both the curvature radiation and Compton scattering. The expected flux of gamma-rays from 1E 2259+586 is estimated. The flux of gamma-rays with energies of about 100-1000 MeV may be high enough to be detected by EGRET. Positrons are created in the magnetosphere of the white dwarf in the process of interaction between photons and ultrarelativistic electrons. These positrons move to the white dwarf surface and heat the gas near the polar caps. Most probably, the X-ray emission of 1E 2259+586 is generated by the hot gas which is heated by the back flux of positrons.
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