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Title:
The Synchrotron Spectrum of Diffuse Radio Sources: Effects of Particle and Field Distributions
Authors:
Eilek, Jean A.; Arendt, Paul N.
Publication:
Astrophysical Journal v.457, p.150 (ApJ Homepage)
Publication Date:
01/1996
Origin:
APJ
Astronomy Keywords:
RADIATION MECHANISMS: NONTHERMAL, RADIO CONTINUUM: GALAXIES
DOI:
10.1086/176719
Bibliographic Code:
1996ApJ...457..150E

Abstract

We present analytic and numerical calculations of the synchrotron spectrum arising from a distribution of magnetic field strengths as well as particle energies. We find that power4aw photon spectra can arise either from power4aw particle distributions, or power-law field distributions. We also find that high-frequency steepening of the photon spectrum is common; this steepening need not be due to synchrotron aging. Different underlying distributions do lead to different rates of high-frequency steepening, and this may provide observational discriminants between different physical pictures.

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