QUaD
Ground-based cosmic microwave background polarization experiment
Location of QUaD
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QUaD,[1] an acronym for QUEST at DASI, was a ground-based cosmic microwave background (CMB) polarization experiment at the South Pole. QUEST (Q and U Extragalactic Sub-mm Telescope) was the original name attributed to the bolometer detector instrument, while DASI is a famous CMB interferometry experiment credited with the first detection of CMB polarization. QUaD used the existing DASI mechanical infrastructure but replaced the DASI interferometric array with a bolometer detector at the end of a cassegrain optical system. The mount has housed the Keck Array since 2011.
See also
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References
- ^ QUaD collaboration (2008). "First season QUaD CMB temperature and polarization power spectra". The Astrophysical Journal. 674 (2008): 22–28. arXiv:0705.2359. Bibcode:2008ApJ...674...22A. doi:10.1086/524922.
External links
- http://www.stanford.edu/~schurch/quad.html
- http://find.spa.umn.edu/quad/
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- Cosmic variance
- Diffusion damping
- Recombination
- Sachs–Wolfe effect
- Sunyaev–Zeldovich effect
- Thomson scattering
4-year Planck image (2018) of the CMB.
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