Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...274l..27b&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 274, Nov. 1, 1983, p. L27-L30. NSF-supported resear
Astronomy and Astrophysics
Astronomy
84
Galactic Radio Waves, Plasma Jets, Radio Sources (Astronomy), Confinement, Image Resolution, Shock Waves
Scientific paper
Observations of the M87 jet made at 15 GHz with 0.12 resoution are presented. At this resolution, all of the knots are clearly resolved both along and across the jet. Most of the knots are smooth in appearance and show no evidence of shocklike discontinuities. The brightest knot and the innermost knot are exceptions to this. The brightest knot (knot A) seems consistent with a shock caused by unsteady flow in the jet. Models for this feature are discussed. Combining these data with X-ray data suggests that the jet is neither freely expanding, thermally confined, nor ram pressure confined. The jet may be magnetically confined.
Biretta John A.
Hardee Philip E.
Owen Frazer N.
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