Herschel submillimeter continuum image the Milky Way galaxy in Vulpecula
NGC 6946 in the visible - a nearby "Grand Design" spiral galaxy
Visible image of a pair of colliding galaxies collectively called NGC 3256
Composite visible and infrared view of the colliding galaxies, NGC 4038/NGC 4039, which make up the "Antennae" system
NGC 4945 - A spiral galaxy, seen nearly edge-on, undergoing vigorous star formation activity
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ksz: kinetic sunyaev-zel'dovich effect
- S-Z Effect: Distortions in the Cosmic Microwave Background (CMB) spectrum are seen when CMB photons travel through the hot
intra-cluster medium of clusters of galaxies along the line of sight.
For background information, see white paper.
Three kinds of distortions are predicted:
tSZ (thermal): dashed red
rSZ (relativistic): dashed orange
kSZ (kinetic): dashed blue
- It is important to characterize and remove CMB, tSZ, bright submm galaxies and radio sources which CCAT-p does in the short submm bands − CCAT-prime can observe over wider range from submm to mm at once.
- Will yield improved constraints on models of dark energy and modified gravity based on measuring 1000 clusters with 100 km/s accuracy.
- Will also enable a measurement of the sum of neutrino masses, another important cosmological prediction.
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