Abstracts, Galactic Center Workshop '98
GCNEWS
A Newsletter for Galactic Center Research
This Volume was edited by Angela Cotera & Heino Falcke
email: gcnews@aoc.nrao.edu

ABSTRACT

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Acceleration processes towards a quasi-monoenergetic electron distribution
Jauch, Z.1; Duschl, W.J.1,2
1 Institut für Theoretisch Astrophysik, Universität Heidelberg, Tiergartenstra\sse 15, 69120 Heidelberg, Germany; 2 Max Planck Institut für Radioastronomie, Auf dem Hügel 69 53121 Bonn, Germany;
ABSTRACT:
We present the results of an investigation of acceleration processes in galactic
centers
and show that a quasi-monoenergetic electron distribution (pile-up) forms in
quite a
natural way under the combined
action of diffusive shock wave acceleration, stochastic acceleration on
turbulent MHD waves
and radiation losses. We follow the temporal
evolution of both the electron and the photon distribution. This requires the
numerical solution of two kinetic equations, i.e., a fully coupled set of
nonlinear partial
integro-differential equations. We apply the results to the non-thermal radio
emission from
the Galactic Center source Sgr A^*, which we interpret as being optically thin
synchrotron
radiation from these quasi-monoenergetic electrons.
LINKS: Program, Author, zeno@ita.uni-heidelberg.de
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