Mathematics – Probability
Scientific paper
Nov 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977natur.270...37j&link_type=abstract
Nature, vol. 270, Nov. 3, 1977, p. 37, 38.
Mathematics
Probability
7
Electron-Positron Pairs, Hadrons, Pair Production, Particle Acceleration, Photoabsorption, Photonuclear Reactions, Pulsars, Stellar Magnetic Fields, Electrons, Emission Spectra, Magnetic Flux, Photons, Positrons, Radioactive Decay
Scientific paper
Two models for the acceleration of positive charged particles near the magnetic polar caps of a pulsar are considered, and an alternative process is suggested. According to this model, for surface magnetic flux densities greater than or equal to 10 to the twelfth G, the nature and mode of acceleration of the plasma moving outwards along open magnetic flux lines are determined by the occurrence of hadronic photoabsorption reactions in the electromagnetic showers produced by ultrarelativistic electrons incident on the stellar surface. It is shown that photons of the energy necessary for conversion in a magnetic flux density of 10 to the twelfth G are emitted with high probability in hadronic photoabsorption reactions. An equation is obtained for the acceleration potential difference in a one-dimensional model of electron-positron pair creation at the magnetic polar cap.
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