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Solutions for Chapter 11: Some Examples of Thermal and Nonthermal Radio Sources

  • Thomas L. Wilson
  • Susanne Hüttemeister
Chapter
Part of the Astronomy and Astrophysics Library book series (AAL)

Abstract

The emission measure is defined as EM \(= \int n_{\mathrm {e}}^2 \mathrm {d}r\). Thus\(\mathrm {EM} = \int _{r_0}^{\infty } \left [ 1.55 \left ( \frac {r}{r_0} \right ) ^{-6} + 2.99\left ( \frac {r}{r_0} \right )^{-16} \right ]^2\, 10^{16}\ \mathrm {d}r = 1.65 \times 10^{8}\) cm−6 pc.

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Thomas L. Wilson
    • 1
  • Susanne Hüttemeister
    • 2
  1. 1.Max-Planck-Institut für RadioastronomieBonnGermany
  2. 2.Zeiss-Planetarium BochumBochumGermany

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