Hotspots, Jets and Environments
M. J. Hardcastle
TL;DR
This paper explores the nature of hotspots and jet knots in powerful radio galaxies, emphasizing jet-environment interactions and new evidence on particle acceleration mechanisms in hotspots of FRIIs.
Contribution
It provides new observational insights into the particle acceleration processes at hotspots of FRIIs and discusses jet-environment interactions in FRI sources.
Findings
Evidence for jet-environment interactions in FRI sources
New observational data on particle acceleration in FRIIs hotspots
Analysis of the relationship between jet knots and hotspots
Abstract
I discuss the nature of `hotspots' and `jet knots' in the kpc-scale structures of powerful radio galaxies and their relationship to jet-environment interactions. I describe evidence for interaction between the jets of FRI sources and their local environments, and discuss its relationship to particle acceleration, but the main focus of the paper is the hotspots of FRIIs and on new observational evidence on the nature of the particle acceleration associated with them.
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Radio Astronomy Observations and Technology · Astrophysics and Cosmic Phenomena