Small experiment using Lagragian passive tracers injected in the sequence of outputs of an ENZO MHD cosmological simulations, to track the formation history of filaments and threads in the intracluster medium .
tracer propagation code in #Julia language
Continuous rotation around the centre of the innermost 2Mpc^3 region of a cluster of galaxies simulated with ideal MHD with the ENZO code (Constrained Transport method here). Each cell is 4kpc large and the quantity on display is the temperature of the intracluster medium gas, almost towards the end of the simulation (z=0.2).
3D rendering done with SAO's DS9.
Continuous rotation around the centre of the innermost 2Mpc^3 region of a cluster of galaxies simulated with ideal MHD with the ENZO code (Constrained Transport method here). Each cell is 4kpc large and the quantity on display is the magnetic field strength almost towards the end of the simulation.
3D rendering done with SAO's DS9.
A woman merging with a beautiful full screen rendering of the simulated cosmic web in a simulation of mine...
This is was a segment from "Destinazione Terra" (Destination Earth) a video using scientific simulations by Daniela Paoletti and Diego Molinari, together the VisitLab at #CINECA, the biggest supercomputing centre in #Italy
It was presented at the Genova Science festival, and you can see the
full video here https://www.youtube.com/watch?v=5SAybgEBiXE
#paperday on #astroph:
"Galaxy clusters in the LoTSS-DR3:
Catalogues and detection pipeline for diffuse radio emission" by Chiara Stuardi et al. including me
https://arxiv.org/pdf/2605.06400
It presents the automated detection of diffuse radio emission in clusters observed in radio, using a Convolutional neural network (RADIO-UNET) trained on my #SimulatedUniverses !
Once in a while, a decent use of #AI to do something humans cannot do on this scale (as quickly).
A few rotating views around a massive (1e15 Msol) simulated cluster of galaxies using ENZO, the almost uniform resolution in the centre is 4kpc/cell and the total volume on display here is (2Mpc)^3.
Left: magnetic field strength (a lot of filaments!).
Right: baryonic density
All rotations are done using SAO's DS9 after post-processing in #Julia
Tomography of magnetic field strength in my latest favourite cluster of galaxies simulated with ENZO and constrained transport, the scanned region is approximately (2 Mpc)^3.
I am constantly trying to step out of the world of clusters of galaxies, but they keep looking very nice from the point of view of simulations!
A very nice collective movie showing the effect of different AGN feedback implementations in the ENZO code by Stefano Sotira, who has just been awarded his #PhD title from the University of #Bologna
His two papers so far, where he investigated the relations between multi-phase gas in the intracluster medium and different feedback modalities:
https://arxiv.org/pdf/2410.07314
A couple of 3D continuous rotations around the density (left) and magnetic field (right) simulated distributions in a Coma-like cluster of galaxies, ENZO-MHD simulation using Constrained Transport, and visualisation using SAO's DS9 viewer on reconstructed fits files
Experiments in the generation (across several timesteps) and advection of Lagragian passive tracers to track the propagation of gas matter in new cosmological simulations of clusters of galaxies.
(tracers code in #Julia language, on top of ENZO-MHD simulations)
franco_vazza