Internal structure of compact relativistic jets

Details Internal structure of compact relativistic jets Internal structure of compact relativistic jets

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002evn..conf..107l&link_type=abstract

6th European VLBI Network Symposium on New Developments in VLBI Science and Technology, held in Bonn, June 25th-28th 2002, proce

Astronomy and Astrophysics

Astronomy

Scientific paper

We present first direct evidence for the presence of plasma instability in an extragalactic relativistic jet, based on analysis of VSOP observation of the quasar 3C273 made at 5GHz. In the VSOP image of 3C273, the emission across the jet is resolved, revealing two threadlike patterns that form a double helix inside the jet. We have identified 5 wavelengths contributing to the appearance of the patterns inside the jet. These wavelengths are in good agreement with the predicted wavelengths of several modes of Kelvin--Helmholtz (K--H) instability developing in a light jet with Lorentz factor of 2 and Mach number of 3.5. The K--H instability description reproduces in detail the internal structure of the jet on scales of up 300 parsecs.

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