Capire i getti relativistici in astrofisica
Uno sguardo alla struttura e al comportamento dei getti relativistici.
Ravi Pratap Dubey, Christian Fendt, Bhargav Vaidya
― 2 leggere min
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Titolo: Particles in Relativistic MHD Jets II: Bridging Jet Dynamics with Multi-waveband Non-Thermal Emission Signatures
Estratto: Relativistic magnetized jets, originating near black holes, are observed to exhibit sub-structured flows. In this study, we present synthetic synchrotron emission signatures for different lines of sight and frequencies, derived from three-dimensional relativistic magneto-hydrodynamic simulations of pc-scale AGN jets. These simulations apply different injection nozzles, injecting steady, variable, and precessing jets. Extending our previous study, here, we have developed a bridge to connect jet dynamics and particle acceleration within relativistic shocks with non-thermal radiation dominant in jets. The emission is derived from Lagrangian particles - injected into the jet and following the fluid - accelerated through diffusive shock acceleration and subsequently cooled by emitting energy via synchrotron and inverse-Compton processes. Overall, the different shocks structures lead to the formation of numerous localized emission patterns - interpreted as jet knots. These knot patterns can fade or flare, also as a consequence of merging or Doppler boosting, leading to jet variability. We find knots with high-enough pattern speed supposed to be visible as superluminal motion
Autori: Ravi Pratap Dubey, Christian Fendt, Bhargav Vaidya
Ultimo aggiornamento: 2024-09-24 00:00:00
Lingua: English
URL di origine: https://arxiv.org/abs/2409.15983
Fonte PDF: https://arxiv.org/pdf/2409.15983
Licenza: https://creativecommons.org/licenses/by/4.0/
Modifiche: Questa sintesi è stata creata con l'assistenza di AI e potrebbe presentare delle imprecisioni. Per informazioni accurate, consultare i documenti originali collegati qui.
Si ringrazia arxiv per l'utilizzo della sua interoperabilità ad accesso aperto.