Magneticum homepage


	The Magneticum Pathfinder simulations are complemented with a set of additional simulations, which allow to test the effect of physical sub-grid models on the evolution of galaxies and galaxy clusters as well as to investigate the effects of the prominent structures in the local universe on observables.
	COMPASS
		COMPASS Clusters With the aim to study in detail the interaction of galaxies with the ICM as well as microphysical processes like the evolution of magnetic fields, turbulence and cosmic rays within the ICM we extending the Dianoga simulations to far higher resolution. The aim is have 250 time more (Phase I) and 2500 times more (Phase II) resolution elements. This pushes simulations of massive clusters to so far never reached precision. Dark matter particle masses in the simulations will be 3.3e6 Msol/h (250x) / 3.3e5 Msol/h (2500x) and softening for dark matter and gas particles will be 0.5 kpc/h (250x), 0.2 kpc/h (2500x). The clusters will therefore be described by more than 600,000,000 particles within the virial radius and typically the simulations will resolve 100,000 galaxies within individual clusters. Download Movie g5503149 1920x1080 (52 MB), Download Movie g6802296 1920x1080 (156 MB), COMPASS Galaxies With the aim to study in detail the evolution of galaxies and especially the outskirts of the galactic halo, we extending the Dianoga simulations to include groups, massive field galaxies and normal galaxies to be simulated at very high resolution. The aim is to have 250 and 2500 time more resolution (Phase I) and even explore 25000 times more resolution (Phase II). This pushes simulations of galaxies to have dark matter particle masses of 3.3e4 Msol/h (25000x). A MW like galaxy will be therefore resolved with 20,000,000 particles within the virial radius. Download Movie dfrogin239105 (250x) 1920x1080 (27 MB), Download Movie asin1413816 (25000x) 1920x1080 (103 MB), DATA availability Raw simulation data will be made available on request. Interactive This is the interactive version of figure 6 from Insights on the origin of ORCs from cosmological simulations, Dolag et al. 2023 (left and middle panel),and figure 10 from MeerKAT discovery of a double radio relic and odd radio circle, Korebalski et al. 2023 (middle and right panel). Just drag the plots in the different panels with the mouse to rotate the view.

	Relevant Publications: Insights on the origin of ORCs from cosmological simulations Koribalski et al. (incl. Dolag) 2023, submitted Insights on the origin of ORCs from cosmological simulations Dolag, Böss, Koribalski, Steinwandel & Valentini, 2023, ApJ Collision of merger and accretion shocks: formation of Mpc-scale contact discontinuity in the Perseus cluster Zhang, Churazov, Dolag, Forman & Zhuravleva, 2020, MNRAS, 498, 130 Encounters of Merger and Accreation Shocks in Galaxy Clusters and their Effects on Intracluster Medium Zhang, Churazov, Dolag, Forman & Zhuravleva, 2020, MNRAS, 494, 4539 Relevant Master Thesis: A Disk-Disk Major Merger Event in a Zoom-Simulation David Schlachtenberger, 2014 Spiral Galaxies in Cosmological Zoom-Simulations Adrian Bittner, 2018 Simulated Galaxy Interactions In Cosmological and Idealized Environments Geray Karademir, 2018
	Local Universe Simulation
		Coruscant Coruscant is a cosmological re-simulation of the local universe based on initial conditions reconstructed from the 1.2 muJ IRAS full sky survey. This simulation is designed to represent the observed local neighborhood out ca. 110Mpc and makes it possible to identify prominent halos from the simulations with real observed galaxy clusters. This simulation includes various physical processes and is also part of the PLANCK sky model. There is a version of the simulation available which includes exactly the same sub-grid models than used in the Magneticum Pathfinder set of simulations.

	Relevant Publications: High-Energy Neutrino Production in Clusters of Galaxies Hussain, Alves, Dal Pino, Dolag, 2021 Limiting magnetic fields in the cosmic web with diffuse radio emission Brown, Vernstrom, Carretti, Dolag, Gaensler, Staveley-Smith, Bernardi, Haverkorn, Kesteven, Poppi, MNRAS 2017 Constrained simulations of the magnetic field in the local Universe and the propagation of ultrahigh energy cosmic rays Dolag, Grasso, Springel & Tkachev, JCAP 2005 The imprints of local superclusters on the Sunyaev-Zel'dovich signals and their detectability with Planck Dolag, Hansen, Roncarelli & Moscardini, MNRAS 2005 Relative velocity of dark matter and baryons in clusters of galaxies and measurements of their peculiar velocities Dolag & Sunyaev, MNRAS 2013 The pre-launch Planck Sky Model: a model of sky emission at submillimetre to centimetre wavelengths Delabrouille et al., A&A 2013
	Cluster re-simulations
	Dianoga Cluster With the aim to understand the formation of galaxy clusters and especially the impact of the gas physics and the feedback processes involved on the evolution of the intra cluster medium, we performed high-resolution zoom simulations of a set of mass limited galaxy clusters selected from a large cosmological box (Gpc in size) described with the standard WMAP-7 LCDM cosmological parameters. We produced 24 Lagrangian regions extracted around the most massive clusters. For each of these regions, initial conditions have been re-generated by increasing mass resolution and adding high-frequency modes, while progressively degrading resolution in outer regions. For each cluster, initial conditions have been generated at the level of the hr resolutions of the Magenticum Pathfinder simulations. These simulations are used to test the implementation of new physical modules and to quantify the impact of the sub-grid models on the intra cluster medium. The left image shows the position of the 24 clusters in the large box. If you click on it, you get a detailed visualization of all 24 clusters.

	Relevant Publications: A non-ideal magnetohydrodynamic GADGET: simulating massive galaxy clusters Bonafede, Dolag, Stasyszyn, Murante & Borgani, MNRAS 2011 X-ray mass proxies from hydrodynamic simulations of galaxy clusters - I Fabjan, Borgani, Rasia, Bonafede, Dolag, Murante & Tornatore, MNRAS 2011 Pointing to the minimum scatter: the generalized scaling relations for galaxy clusters Ettori, Rasia, Fabjan, Borgani & Dolag, MNRAS 2012 Lensing and x-ray mass estimates of clusters (simulations) Rasia et al, NJPh 2012 How baryonic processes affect strong lensing properties of simulated galaxy clusters Killedar, Borgani, Meneghetti, Dolag, Fabjan & Tornatore, MNRAS 2012 The relation between velocity dispersion and mass in simulated clusters of galaxies: dependence on the tracer and the baryonic physics Munari, Biviano, Borgani, Murante & Fabjan, MNRAS 2013 Baryon census in hydrodynamical simulations of galaxy clusters Planelles, Borgani, Dolag, Ettori, Fabjan, Murante & Tornatore, MNRAS 2013 Large-scale inhomogeneities of the intracluster medium: improving mass estimates using the observed azimuthal scatter Roncarelli, Ettori, Borgani, Dolag, Fabjan & Moscardini, MNRAS 2013 Brightest cluster galaxies in cosmological simulations: achievements and limitations of active galactic nuclei feedback models Ragone-Figueroa, Granato, Murante, Borgani & Cui, MNRAS 2013 Characterizing diffused stellar light in simulated galaxy clusters Cui, Murante, Monaco, Borgani, Granato, Killedar, De Lucia, Presotto & Dolag, MNRAS 2014 On the role of AGN feedback on the thermal and chemodynamical properties of the hot intracluster medium Planelles, Borgani, Fabjan, Killedar, Murante, Granato, Ragone-Figueroa & Dolag, K, MNRAS 2014 Temperature Structure of the Intracluster Medium from Smoothed-particle Hydrodynamics and Adaptive-mesh Refinement Simulations Rasia et al., ApJ 2014
	Galaxy re-simulation
		Dianoga Galaxies With the aim to understand the formation of galaxies and especially the impact of the gas component and the feedback on the evolution of elliptical galaxies in various cosmological environments, we performed high-resolution zoom simulations of galaxies selected from a large cosmological box (Gpc in size). These simulations are also used to test the parameters of the sub-grid models used in the Magneticum Pathfinder simulations. The image on the left shows a massive galaxy forming inside a void structure at present day. Download Movie 1920x1080 (27MB)

	Relevant Publications: