Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989plap.work..243s&link_type=abstract
In ESA, Proceedings of an International School and Workshop on Plasma Astrophysics, Volume 1 p 243-246 (SEE N89-24910 18-75)
Astronomy and Astrophysics
Astrophysics
Particle Acceleration, Protons, Radiation Sources, X Ray Binaries, Magnetohydrodynamic Waves, Neutron Stars, Plasma Density, Stellar Models, Synchrotron Radiation
Scientific paper
A model for the proton acceleration connected with accreting X-ray binaries is proposed. Acceleration is assumed to occur on the closed (dipole) field lines of the neutron star where the density is low and collisional losses of the energetic protons are small. Protons can be mirrored at the poles and become trapped, affording time for them to be accelerated gradually. Eventually, high energy protons escape by diffusing onto open field lines. It is postulated that potential energy of the matter accreting on the open field lines is transferred to Alfven waves that accelerate the protons on the closed field lines. Proton synchrotron radiation may be detectable from the GeV gamma-ray region to the infrared.
Katz Jonathan I.
Smith Ian A.
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