Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-10-21
Astron.Astrophys. 431 (2005) 477
Astronomy and Astrophysics
Astrophysics
28 pages, lots of figures, accepted for publication in A&A
Scientific paper
10.1051/0004-6361:20047021
We present deep VLA and HST observations of the large-scale jet in 3C 273 matched to 0.3" resolution. The observed spectra show a significant flattening in the infrared-ultraviolet wavelength range. The jet's emission cannot therefore be assumed to arise from a single electron population and requires the presence of an additional emission component. The observed smooth variations of the spectral indices along the jet imply that the physical conditions vary correspondingly smoothly. We determine the maximum particle energy for the optical jet using synchrotron spectral fits. The slow decline of the maximum energy along the jet implies particle reacceleration acting along the entire jet. In addition to the already established global anti-correlation between maximum particle energy and surface brightness, we find a weak positive correlation between small-scale variations in maximum particle energy and surface brightness. The origin of these conflicting global and local correlations is unclear, but they provide tight constraints for reacceleration models.
Jester Sebastian
Meisenheimer Klaus
Perley Rick
Roeser Hermann-Josef
No associations
LandOfFree
The radio-ultraviolet spectral energy distribution of the jet in 3C273 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 radio-ultraviolet spectral energy distribution of the jet in 3C273, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The radio-ultraviolet spectral energy distribution of the jet in 3C273 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-227587