Ultraviolet HST Observations of the Jet in M87

  title={Ultraviolet HST Observations of the Jet in M87},
  author={C. Z. Waters and Stephen E. Zepf},
  journal={arXiv: Astrophysics},
We present new ultraviolet photometry of the jet in M87 obtained from HST WFPC2 imaging. We combine these ultraviolet data with previously published photometry for the knots of the jet in radio, optical, and X-ray, and fit three theoretical synchrotron models to the full data set. The synchrotron models consistently overpredict the flux in the ultraviolet when fit over the entire dataset. We show that if the fit is restricted to the radio through ultraviolet data, the synchrotron models can… 

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