Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-08-20
Astroph.J.Lett. 668 (2007), 27-30
Astronomy and Astrophysics
Astrophysics
4 pages, 2 color figures, 1 table, accepted for publication in the Astrophysical Journal Letters; a typo in a reference has be
Scientific paper
10.1086/522603
We report new 2 cm VLBA images of the inner radio jet of M87 showing a limb brightened structure and unambiguous evidence for a faint 3 mas long counter-feature which also appears limb brightened. Multi-epoch observations of seven separate jet features show typical speeds of less than a few percent of the speed of light, despite the highly asymmetric jet structure and the implications of the canonical relativistic beaming scenario. The observed morphology is consistent with a two stream spine-sheath velocity gradient across the jet, as might be expected from the recently discovered strong and variable TeV emission as well as from numerical modeling of relativistic jets. Considering the large jet to counter-jet flux density ratio and lack of observed fast motion in the jet, we conclude that either the inner part of the M87 jet is intrinsically asymmetric or that the bulk plasma flow speed is much greater than any propagation of shocks or other pattern motions.
Homan Daniel C.
Kellermann Kenneth I.
Kovalev Yu. Yu.
Lister Matthew L.
No associations
LandOfFree
The Inner Jet of the Radio Galaxy M87 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Inner Jet of the Radio Galaxy M87, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Inner Jet of the Radio Galaxy M87 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-533511