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Cosmic microwave background

41 articles

Modern Cosmology (book)

Modern Cosmology is a graduate-level cosmology textbook by Scott Dodelson, first published by Academic Press in 2003 and now in a third edition with Fabian Schmidt.

Planck (spacecraft)

Planck was a European Space Agency satellite that surveyed the whole sky from 2009 to 2013 to map the cosmic microwave background, the relic radiation of the Big Bang.

POLARBEAR

POLARBEAR (Polarization of the Background Radiation) is a ground-based cosmic microwave background polarization experiment at the Huan Tran Telescope in Chile's Atacama Desert, known for its 2014 lensing detection.

QUBIC

QUBIC, the Q&U Bolometric Interferometer for Cosmology, is a ground-based experiment measuring CMB polarization to detect B-modes from inflationary gravitational waves, observing from about 4,900 meters in Salta, Argentina.

QUIJOTE CMB experiment

QUIJOTE (Q-U-I JOint TEnerife) is a ground-based polarimeter at the Teide Observatory in Tenerife, Spain, measuring cosmic microwave background polarization at 10–42 GHz since 2012.

Sachs–Wolfe effect

The Sachs–Wolfe effect is the influence of gravitational potentials on cosmic microwave background temperature anisotropy, predicted in 1967; its integrated form, strongest on the largest scales, probes dark energy.

SMICA

SMICA (Spectral Matching Independent Component Analysis) is a blind, spectral-domain method introduced in 2003 for separating the cosmic microwave background from foreground emissions, and one of Planck's four component-separation pipelines.

SPT-3G

SPT-3G is the third-generation millimeter-wavelength camera on the 10-meter South Pole Telescope in Antarctica, installed in January 2017 with about 16,000 detectors to map the cosmic microwave background's temperature and polarization.

Sunyaev–Zel'dovich effect

The Sunyaev–Zel'dovich effect is the distortion of the cosmic microwave background when its photons scatter off hot electrons in galaxy clusters; predicted in the 1970s, it finds clusters independently of distance.

Visibility function

The visibility function is the probability density that a cosmic microwave background photon underwent its last scattering at a given time, peaking sharply at recombination.

Wilkinson Microwave Anisotropy Probe

The Wilkinson Microwave Anisotropy Probe (WMAP) was a NASA observatory that mapped the cosmic microwave background from 2001 to 2010, measuring the universe's age and composition.