BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Simulations of radio galaxy flickering jets: travelling shocks\, h
 otspot brightening and stability - Emma Elley (Oxford)
DTSTART:20260213T113000Z
DTEND:20260213T123000Z
UID:TALK244255@talks.cam.ac.uk
CONTACT:Sandro Tacchella
DESCRIPTION:Variability in AGN jet power is an expected consequence of fue
 lling mechanisms such as chaotic cold accretion. We simulate flickering je
 ts to draw out potential observational probes of flickering behaviour. We 
 use a Lagrangian particle approach coupled to high resolution relativistic
  hydrodynamic simulations\, modelling the effects of shock acceleration to
 gether with radiative and adiabatic cooling. We introduce a new approach t
 o modelling the effects of mixing with unshocked material - of crucial imp
 ortance in an environment with a high density contrast. Our variable power
  simulations show bright hotspots lasting for small fractions of the jet
 ’s lifetime\, caused by the interaction between travelling shocks and th
 e pre-existing shock structure at the jet head. We extend this work with a
 n investigation of the effects of magnetic fields on jet dynamics and stab
 ility. I will discuss the potential role of the kink instability in these 
 systems and present preliminary results from a constant and flickering jet
  simulation.\n
LOCATION:Ryle Seminar Room\, KICC + online
END:VEVENT
END:VCALENDAR