Sunyaev-Zeldovich Effect Science with the Cornell-Caltech Atacama Telescope

Details Sunyaev-Zeldovich Effect Science with the Cornell-Caltech Atacama Telescope Sunyaev-Zeldovich Effect Science with the Cornell-Caltech Atacama Telescope

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.9118g&link_type=abstract

American Astronomical Society, AAS Meeting #211, #91.18; Bulletin of the American Astronomical Society, Vol. 39, p.886

Astronomy and Astrophysics

Astrophysics

Scientific paper

The Sunyaev-Zeldovich (SZ) effect will become, over the next decade, an important probe of cosmology and cluster formation astrophysics via wide-area blind surveys for galaxy clusters using the SZ effect (Planck, APEX-SZ, ACT, SPT). The Cornell-Caltech Atacama Telescope (CCAT), with its finer angular resolution and wider frequency coverage relative to the survey telescopes, can play a significant complementary role by pursuing the following types of SZ observations:
- Detailed thermal SZ (tSZ) effect mapping of clusters detected by the surveys. CCAT will provide high-resolution SZ profiles to aid in calibrating and interpreting these surveys.
- Blind tSZ surveys reaching lower mass limits than wider-area surveys done with coarser angular resolution.
- Measurement of the tSZ anisotropy power spectrum at very high angular multipole number, 2000-20000.
- Searches for the kinetic SZ effect in massive galaxy clusters.
- Low-resolution tSZ spectroscopic follow-up of clusters to aid in measuring relativistic effects, to possibly provide SZ-based gas temperatures, and to search for the kinetic SZ effect.
We present expected sensitivities for observing programs of these types.

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