Emission Processes

  • Gregory D. Fleishman
  • Igor N. Toptygin
Part of the Astrophysics and Space Science Library book series (ASSL, volume 388)


A classical problem of calculating the electromagnetic emission produced by a charge (or a group of charges) moving in the vacuum is formulated in terms of computing the Poynting vector flux through a closed infinitely distant surface surrounding the radiation source (Melrose 1980;Rybicki and Lightman 1986; Ginzburg 1987;Nagirner 2007b). In contrast, computing the emission from a plasma, which is an anisotropic, dispersive, and absorbing matter, is distinctly different from the classical vacuum problem. In particular, unlike the vacuum case, the polarization vectors of the eigenmodes are not arbitrary any longer, while set up by the plasma dispersion (see Chap.3). Then, the concept of the nonzero energy flux through an infinitely distant surface can only work in case of truly nonabsorbing matter, which is strictly speaking not the case for real media including astrophysical plasmas.


Synchrotron Radiation Dielectric Permittivity Lorentz Force Spatial Dispersion Fast Particle 
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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Gregory D. Fleishman
    • 1
  • Igor N. Toptygin
    • 2
  1. 1.Center for Solar-Terrestrial Research New Jersey Institute of TechnologyNewarkUSA
  2. 2.Department of Theoretical PhysicsSt. Petersburg State Polytechnical UniversitySt. PetersburgRussia

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