2009/05/18 by M. G. Kim, Kim, M. G., Fumio Takahara +2
Engineering · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Particle Accelerators and Free-Electron Lasers #Particle accelerators and beam dynamics #astro-ph.CO
paper · pdf · doi:10.48550/arxiv.0905.2818
7 pages, 8 figures, submitted to MNRAS
openalex publication_date 2009/05/18 · arxiv created 2009/05/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate apparent internal structure of kiloparsec scale jets of AGNs arising from the energy dependent cooling of accelerated electrons and light travel time effect for relativistically moving sources. Using a simple cylindrical shell model, we find that the offsets between the peaks of X-ray, optical and radio brightness distributions observed for many cases are basically explained with this model. Assuming that electrons in the moving shell are instantaneously accelerated, X-rays are emitted for a shorter time scale and observed at the side nearer to the nucleus, while radio emission continues to the far side of the nucleus because of longer cooling time. The resultant offset turns out to be order of the jet diameter owing to the light travel time effect.