Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...238..462f&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 238, no. 1-2, Nov. 1990, p. 462-464. Research supported by DFG.
Astronomy and Astrophysics
Astrophysics
Dirac Equation, Electrons, Equations Of Motion, Lorentz Transformations, Pulsars, Electromagnetic Fields, Particle Trajectories, Positrons, Vacuum
Scientific paper
The current crude estimates of the range of applicability of the classical Lorentz-Dirac equation severely restrict or even prohibit its use to study the motion of electrons in pulsar vacuum fields due to the high values of typical field strengths and particle energies. It is shown that these estimates can be improved if the particle trajectories are known and radiation damping is taken into account. In contrast to former results, the estimates obtained here do not contain the particle energies. For particles of given mass and charge they only restrict the admissible field strengths. Since for electrons or positrons and all currently known pulsar fields the derived conditions are satisfied, the Lorentz-Dirac equation may be applied to these particles without limitations.
Finkbeiner Bernd
Herold Heinz
Ruder Hanns
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