Clusters of Galaxies in the Microwaves

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Clusters of Galaxies in the Microwaves

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Presentation transcript:

Clusters of Galaxies in the Microwaves

Clusters of Galaxies in the Microwaves CMB+CLUSTERS Sunyaev & Zel'dovich Effect

Sunyaev & Zel'dovich Effect Thermal S-Z Effect Kinetic S-Z effect

Sunyaev & Zel'dovich Effect 1) SZ effect depends on the projection of n along the line of sights 2) SZ effect is independent of redshift dI/d=0 1) Combination of SZ and X-ray observations gives important information on the gas structure ; Combination of SZ and X-ray observations provide information on the cluster Distance (estimate of H0) 2) SZ observations allow to observe (in principle) all the clusters in the universe

Sunyaev & Zel'dovich Effect

SZ Observation Techniques Single dish Bolometric array Interferometer

The OVRO (Owens Valley Radio Observatory) 40-Meter and 5 The OVRO (Owens Valley Radio Observatory) 40-Meter and 5.5-Meter Telescope

APEX-SZ 330 element transition edge sensor (TES) monolithic bolometer array 0.4 degree field of view Single color observations at 2 and 1.4 mm wavelengths Single-moded horn coupled array for RF and stray light shielding SQUID readouts on individual bolometers Survey 200 square degrees to 10 micro-K_CMB sensitivity per 0.8' pixel in two seasons at 2 mm wavelength Single detector NET of 350 micro-K √ s Pulse-tube cooler-based cryostat to eliminate liquid cryogens

SuZIE The Sunyaev-Zel'dovich Infrared Experiment The SuZIE experiment measures the Sunyaev-Zel'dovich effect at multiple frequencies between 150 and 350 GHz, from the Caltech Submillimeter Observatory on Mauna Kea in Hawai'i.

OVMMA (Millimeter-Wavelength Array)

The Planck Mission

The Planck Mission

Cosmology with SZ Clusters

SZ sky of Known Clusters Mazzotta 903 clusters

SZ sky including all clusters not detected in X-rays Mazzotta 85,537,821 clusters M>1.E13

Cold Fronts: implications for the kinetic SZ Effect and the CMB polarization Diego, Mazzotta, Silk, ApJL

Kinetic SZ Effect and CMB Polarization

Signal Variation with respect to the “Classic SZ effect”

DS/S=2.5 DS/S=13 Dg/g=5 SZ Dg/g=26 Polarization 300 km/s M=1 T=9keV; V=1500 km/s M=1 Dg/g=5 SZ Dg/g=26 Polarization DS/S=2.5 DS/S=13