HST observations of the M 87 jet

  • J. A. Biretta
  • E. Perlman
  • W. B. Sparks
  • F. Macchetto
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 530)


We present highlights and preliminary results of our HST observing programs on the M 87 jet. We confirm previously known similarities between the radio and optical jets, but also describe a wealth of differences and new structural details. We identify numerous compact optical features, as well as new structures in the shock-like knots A and C. We also find considerable evidence for structure in the jet as a function of distance from the jet axis — evidence is seen for radial structure in the radio / optical spectrum, in the optical / optical spectrum, and in the polarimetry. Our monitoring between 1994 and 1996 shows numerous features with superluminal speeds in the range 4c to 6c, as well as the emergence of new superluminal components and rapid fading of old features.


Radio Image Radial Structure Apparent Speed Radio Polarization Eastern Component 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1999

Authors and Affiliations

  • J. A. Biretta
    • 1
  • E. Perlman
    • 1
  • W. B. Sparks
    • 1
  • F. Macchetto
    • 1
  1. 1.Space Telescope Science InstituteBaltimoreUSA

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