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Signatures of anisotropic sources in the trispectrum of the cosmic microwave background
Maresuke Shiraishi, Eiichiro Komatsu, Marco Peloso
Soft limits of -point correlation functions, in which one wavenumber is much smaller than the others, play a special role in constraining the physics of inflation. Anisotropic s…
Mapping dark matter in the gamma-ray sky with galaxy catalogs
Shin'ichiro Ando, Aurélien Benoit-Lévy, Eiichiro Komatsu
Cross-correlating gamma-ray maps with locations of galaxies in the low-redshift Universe vastly increases sensitivity to signatures of annihilation of dark matter particles. Low-re…
Mission design of LiteBIRD
T. Matsumura, Y. Akiba, J. Borrill +66
LiteBIRD is a next-generation satellite mission to measure the polarization of the cosmic microwave background (CMB) radiation. On large angular scales the B-mode polarization of t…
Limits on anisotropic inflation from the Planck data
Jaiseung Kim, Eiichiro Komatsu
Temperature anisotropy of the cosmic microwave background offers a test of the fundamental symmetry of spacetime during cosmic inflation. Violation of rotational symmetry yields a…
Constraining primordial magnetic fields with distortions of the black-body spectrum of the cosmic microwave background: pre- and post-decoupling contributions
Kerstin E. Kunze, Eiichiro Komatsu
Observational limits on - and -type distortions can constrain properties of magnetic fields in the early universe. For a Gaussian, random, and non-helical field, and …
Bispectrum from open inflation
Kazuyuki Sugimura, Eiichiro Komatsu
We calculate the bispectrum of primordial curvature perturbations, ζ, generated during "open inflation." Inflation occurs inside a bubble nucleated via quantum tunneling from the b…