Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-10-28
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
4 pages, 4 figures. To appear in Proceedings of IAU Symposium 275 "Jets at all Scales", 13-17 September 2010, Buenos Aires, Ar
Scientific paper
The question of the collimation of relativistic jets is the subject of a lively debate in the community. We numerically compute the apparent velocity and the Doppler factor of a non homokinetic jet using different velocity profile, to study the effect of collimation on the appearance of relativistic jets (apparent velocity and Doppler factor). We argue that if the motion is relativistic, the high superluminal velocities are possible only if the geometrical collimation is smaller than the relativistic beaming angle $\gamma^{-1}$. In the opposite case, the apparent image will be dominated by the part of the jet traveling directly towards the observer resulting in a smaller apparent velocity. Furthermore, getting rid of the homokinetic hypothesis yields a complex relation between the observing angle and the Doppler factor, resulting in important consequences for the numerical computation of AGN population and unification scheme model.
Boutelier Timothé
Henri Gilles
Petrucci Pierre Olivier
No associations
LandOfFree
The influence of collimation on the appearance of relativistic jets 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 influence of collimation on the appearance of relativistic jets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The influence of collimation on the appearance of relativistic jets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-583447