Far-UV STIS Imaging of the M87 Jet

Details Far-UV STIS Imaging of the M87 Jet Far-UV STIS Imaging of the M87 Jet

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999hst..prop.8140b&link_type=abstract

HST Proposal ID #8140

Physics

Hst Proposal Id #8140 Agn Physics

Scientific paper

We propose far-UV STIS imaging observations as part of our ongoing investigation of the M87 jet. The proposed observations will give the high-frequency spectral shape and cut-off frequency throughout the jet; these are expected to respond sensitively to the acceleration and energy loss mechanisms at work in extragalactic jets. Our cycle 4-7 monitoring program reveals striking evolution in the jet structure. Many components vary significantly with time; new ones emerge, while others fade from view over just a few years. Numerous superluminal components are seen with speeds between 2c and 6c. STIS observations will give us the unique opportunity to study the evolution of the high-frequency spectrum as these new features are born and fade away. Current models place the M87 synchrotron cut-off frequency near 1500Angstrom, making far-UV observations essential.

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