11k citations · 64.4k across the 195 of their papers we have counts for
12 papers · 1 filter
Reheating of the universe after inflation with f(phi)R gravity
Yuki Watanabe, Eiichiro Komatsu
We show that reheating of the universe occurs spontaneously in a broad class of inflation models with f(phi)R gravity (phi is inflaton). The model does not require explicit couplin…
Dark matter annihilation or unresolved astrophysical sources? Anisotropy probe of the origin of cosmic gamma-ray background
Shin'ichiro Ando, Eiichiro Komatsu, Takuro Narumoto +1
The origin of the cosmic gamma-ray background (CGB) is a longstanding mystery in high-energy astrophysics. Possible candidates include ordinary astrophysical objects such as unreso…
Angular power spectrum of gamma-ray sources for GLAST: blazars and clusters of galaxies
Shin'ichiro Ando, Eiichiro Komatsu, Takuro Narumoto +1
Blazars, a beamed population of active galactic nuclei, radiate high-energy gamma-rays, and thus are a good target for the Gamma Ray Large Area Space Telescope (GLAST). As the blaz…
Primordial Non-Gaussianity and Analytical Formula for Minkowski Functionals of the Cosmic Microwave Background and Large-scale Structure
Chiaki Hikage, Eiichiro Komatsu, Takahiko Matsubara
We derive analytical formulae for the Minkowski Functions of the cosmic microwave background (CMB) and large-scale structure (LSS) from primordial non-Gaussianity. These formulae e…
Improved Calculation of the Primordial Gravitational Wave Spectrum in the Standard Model
Yuki Watanabe, Eiichiro Komatsu
We show that the energy density spectrum of the primordial gravitational waves has characteristic features due to the successive changes in the relativistic degrees of freedom duri…
Perturbation Theory Reloaded: Analytical Calculation of Non-linearity in Baryonic Oscillations in the Real Space Matter Power Spectrum
Donghui Jeong, Eiichiro Komatsu
We compare the non-linear matter power spectrum in real space calculated analytically from 3rd-order perturbation theory with N-body simulations at 1<z<6. We find that the perturba…