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The cosmic microwave background bispectrum as a test of the physics of inflation and probe of the astrophysics of the low-redshift universe
Eiichiro Komatsu, David N. Spergel
Why is non-Gaussianity interesting? One of generic predictions from inflationary scenarios is that primordial fluctuations are exactly Gaussian in linear order; however, the non-li…
CMB anisotropy from spatial correlations of clusters of galaxies
Eiichiro Komatsu, Tetsu Kitayama, Alexandre Refregier +2
The SZ effect from clusters of galaxies is a dominant source of secondary CMB anisotropy in the low-redshift universe. We present analytic predictions for the CMB power spectrum fr…
Substructures revealed by the Sunyaev-Zel'dovich effect at 150GHz in the high resolution map of RXJ1347-1145
Eiichiro Komatsu, Hiroshi Matsuo, Tetsu Kitayama +7
We report on mapping observations toward the region of the most luminous X-ray cluster RXJ1347-1145 (z=0.45) through the Sunyaev-Zel'dovich effect at 21GHz and 150GHz with the Nobe…
Acoustic Signatures in the Primary Microwave Background Bispectrum
Eiichiro Komatsu, David N. Spergel
If the primordial fluctuations are non-Gaussian, then this non-Gaussianity will be apparent in the cosmic microwave background (CMB) sky. With their sensitive all-sky observation,…