Internal Structure and Kinematics of the M87 Inner Radio Jet

Details Internal Structure and Kinematics of the M87 Inner Radio Jet Internal Structure and Kinematics of the M87 Inner Radio Jet

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21011206k&link_type=abstract

American Astronomical Society Meeting 210, #112.06; Bulletin of the American Astronomical Society, Vol. 39, p.236

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M87 was the first galaxy recognized to have a relativistic jet (Sklovsky, 1963, Astron. Zh. 40, 972). Previous radio, optical, and X-ray observations show nearly identical jet structure extending some 20 arcseconds (1.6 kpc) away from the galaxy nucleus. Beyond 5 mas (0.4 pc) from the base, the jet appears to break into two trails which extend out to about 100 mas (8 pc). However, it isn’t clear if the dual appearance is due to the bifurcation of the jet or if it dual is the result of an edge brightened optically thin cone. We have also detected a faint counter-jet. Repeated observations made since 1994 trace the motion of a number of jet features. Some parts of the inner jet appear stationary while other parts move with apparent speeds only up to about 0.6 times the speed of light. This is in contrast to the much large speeds which have been reported at radio and at optical wavelengths further along the jet.

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