Measurement of the Cosmic Microwave Background Bispectrum on the<i>COBE</i>DMR Sky Maps
Measurement of the Cosmic Microwave Background Bispectrum on the<i>COBE</i>DMR Sky Maps
We measure the angular bispectrum of the cosmic microwave background (CMB) radiation anisotropy from the COBE Differential Microwave Radiometer (DMR) 4 yr sky maps. The angular bispectrum is the harmonic transform of the three-point correlation function, analogous to the angular power spectrum, the harmonic transform of the two-point correlation function. …