The Radio-ultraviolet spectral energy distribution of the jet in 3C 273

  title={The Radio-ultraviolet spectral energy distribution of the jet in 3C 273},
  author={Sebastian Jester and H. J. Roeser and Klaus Meisenheimer and R. Perley Fermilab and Mpia Heidelberg and Nrao Socorro},
  journal={Astronomy and Astrophysics},
We present deep VLA and HST observations of the large-scale jet in 3C 273 matched to 0. �� 3 resolution. The observed spectra show a significant flattening in the infrared-ultraviolet wavelength range. The jet's emission cannot therefore be assumed to arise from a single electron population and requires the presence of an additional emission component. The observed smooth variations of the spectral indices along the jet imply that the physical conditions vary correspondingly smoothly. We… 
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