|The Sunyaev-Zel'dovich effect|
MPA Homepage > Scientific Research > Research Groups > Galaxy Formation > VIRGO > VLS > The Sunyaev-Zel'dovich effect
Data Visualization (images & movies from Numerical Simulation projects)
Image 1: Simulated kinetic SZ map (created by Naoki Yoshida and
This picture is created by projecting our simulation box [see Very Large Simulations] (480Mpc/h on a side) in one direction on a 2400 x 2400 grid. We assume that baryons trace the dark matter, i.e. baryon densities and peculiar velocities are proportional to those of the dark matter. The colours show the CMB temperature fluctuationss with white denoting approaching material and black receding material. Clusters and superclusters in formation are clearly visible.
Image 2: Stacked kinetic SZ map, 3.4 x 3.4 degree2 field
To make a realistic sky map, we stack simulation boxes in a line extending to high redshift. The simulation [see Higher Resolution Simulations in Smaller Boxes] outputs at 14 different redshifts between 0 and 10 are arranged such that they fit together and fill in the volume of a past lightcone of the observer. We select an area of one degree on a side. The map is made with 2048 x 2048 pixels, corresponding to an angular resolution of 0.1 arcminute. Fractional temperature variations delta T/T is shown in a linearly scaled grey color.
Image 3: Stacked thermal SZ map
As for Image 2, but for the thermal effect. The grey scale is logarithmic for this picture.
Superclusters with Thermal SZ effect surveys
Non-Gaussian CMB Temperature Fluctuations from Peculiar Velocities
Large-Scale Motions in Superclusters: their imprint in the cosmic
Here is an example of proper credit for these Virgo data.
Comments to: N. Yoshida email@example.com