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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



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.