... Wilson

Adjunct Astronomer, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218; awilson@stsci.edu

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... Shopbell

Present address: Department of Astronomy, Mail Code 105-24, California Institute of Technology, Pasadena, CA 91125

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... 1973

Robertson's catalog excludes Cyg A on account of its low galactic latitude

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... IRAF

IRAF is distributed by the National Optical Astronomy Observatories, which are operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation.

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... model

In the ``filament'', the energy densities of the synchrotron radiation and the microwave background are comparable.

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... spectrum.

Because we are concerned with only scattered photons below an energy of 10 keV, we assume Thomson scattering throughout i.e. $\gamma h \nu_{S} \ll m c^{2}$, where $\nu_{S}$ is the frequency of the synchrotron photon and $m c^{2}$ is the rest mass energy of the electron.

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