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19-06-2014
Today's Colloquium: Numerical Simulations of Relativistic AGN Jets at Different Scales: Spectral Evolution of Blazar Jets and Heating of the Intracluster Medium
| Submitter: | Manel Perucho (Universitat de Valencia) |
| Description: | Note that this colloquium will start earlier than usual, i.e. at 14:00 (because of the Midsummer Barbecue) I will review recent results from numerical simulations of relativistic jets in the context of parsec-scale jets and long-term evolution in the kiloparsec scales, both using the code Ratpenat. The first part of my talk will be devoted to parsec-scale jets. We have investigated the interaction between travelling shock waves and standing recollimation shocks in the context of a detailed observational work of the blazar CTA 102. In order to compare our simulations with the observed evolution, we have computed synthetic light curves and VLBI maps, accounting for both synchrotron and adiabatic losses. Our results show that the observed spectral evolution of the source can be qualitatively explained by shock-shock interaction, which could lead to a significant increase in the emission. In the second part of my talk, I will present recent results on the impact of relativistic AGN jets in their surroundings following from long-term simulations of relativistic jets with different powers and composition. Our simulations reproduce some of the observed features in powerful large-scale AGN jets and show key differences in the evolution of the different jets in terms of the spatial and temporal scales of energy deposition. I will discuss these differences and also those with slow and massive outflows, commonly claimed to be responsible for AGN kinetic feedback. Finally, I will give a number of conclusions that can be extracted from our work and which can be relevant to the study of AGN feedback. |
| Copyright: | Manel Perucho (Universitat de Valencia) |
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