Other
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.303..779e&link_type=abstract
Nature (ISSN 0028-0836), vol. 303, June 30, 1983, p. 779-781. Research supported by the Alfred P. Sloan Foundation and Universit
Other
11
Astronomical Models, Elliptical Galaxies, Galactic Structure, Plasma Jets, Radio Galaxies, Shock Wave Propagation, Propagation Velocity, Relativistic Electron Beams, Relativistic Velocity, Very Large Array (Vla)
Scientific paper
The implications of the geometric features of the jet in M87 observed with the Very Large Array are discussed. Attention was focused on the 'knots' of the one-sided jet and the effect the viewing angle of the observer has on the perceptions of the physical configuration of the jet. Knot A was about 1 kpc from the nucleus with a beam power to velocity ratio of at least up to 10 to the 33rd erg/sq cm. Conditions under which the viewing is edge-on are explored, together with perturbations in the internal velocity structure that would produce shocks. Two models are defined, one that involves a quasi-steady Mach shock disk, the other requiring a relativistic shock with the maximum apparent velocity for any given angle of observation. Evidence against the relativistic beaming version of the model is cited.
Eichler David
Smith Marcie
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