135 citations · 2.2k across the 88 of their papers we have counts for
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Evolution of linear cosmological perturbations and its observational implications in Galileon-type modified gravity
Tsutomu Kobayashi, Hiroyuki Tashiro, Daichi Suzuki
A scalar-tensor theory of gravity can be made not only to account for the current cosmic acceleration, but also to satisfy solar-system and laboratory constraints, by introducing a…
A numerical study of primordial magnetic field amplification by inflation-produced gravitational waves
Sachiko Kuroyanagi, Hiroyuki Tashiro, Naoshi Sugiyama
We numerically study the interaction of inflation-produced magnetic fields with gravitational waves, both of which originate from quantum fluctuations during inflation. The resonan…
Detectability of the 21 cm-CMB cross-correlation from the EoR
Hiroyuki Tashiro, Nabila Aghanim, Mathieu Langer +3
The 21-cm line fluctuations and the cosmic microwave background (CMB) are powerful probes of the epoch of reionisation of the universe. We study the potential of the cross-correlat…
S-Z power spectrum produced by primordial magnetic fields
Hiroyuki Tashiro, Naoshi Sugiyama
Primordial magnetic fields generated in the very early universe are one of the candidates for the origin of magnetic fields observed in galaxy clusters. After recombination, the Lo…
Cross-correlation Study between the Cosmological 21-cm Signal and the kinetic Sunyaev-Zel'dovich effect
Vibor Jelic, Saleem Zaroubi, Nabila Aghanim +6
The Universe's Epoch of Reionization (EoR) can be studied using a number of observational probes that provide complementary or corroborating information. Each of these probes suffe…
Cluster formation and the Sunyaev-Zel'dovich power spectrum in modified gravity: the case of a phenomenologically extended DGP model
Tsutomu Kobayashi, Hiroyuki Tashiro
We investigate the effect of modified gravity on cluster abundance and the Sunyaev-Zel'dovich angular power spectrum. Our modified gravity is based on a phenomenological extension…