535 citations · 1.3k across the 31 of their papers we have counts for
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Testing general scalar-tensor gravity and massive gravity with cluster lensing
Tatsuya Narikawa, Tsutomu Kobayashi, Daisuke Yamauchi +1
We explore the possibility of testing modified gravity exhibiting the Vainshtein mechanism against observations of cluster lensing. We work in the most general scalar-tensor theory…
Testing gravity with halo density profiles observed through gravitational lensing
Tatsuya Narikawa, Kazuhiro Yamamoto
We present a new test of the modified gravity endowed with the Vainshtein mechanism with the density profile of a galaxy cluster halo observed through gravitational lensing. A scal…
Halo models in modified gravity theories with self-accelerated expansion
Tatsuya Narikawa, Rampei Kimura, Tatsunosuke Yano +1
We investigate the structure of halos in the sDGP (self-accelerating branch of the Dvali-Gavadadze-Porrati braneworld gravity) model and the galileon modified gravity model on the…
Constraint on the cosmological f(R) model from the multipole power spectrum of the SDSS luminous red galaxy sample and prospects for a future redshift survey
Kazuhiro Yamamoto, Gen Nakamura, Gert Huetsi +2
A constraint on the viable f(R) model is investigated by confronting theoretical predictions with the multipole power spectrum of the luminous red galaxy sample of the Sloan Digita…
Characterizing the linear growth rate of cosmological density perturbations in an f(R) model
Tatsuya Narikawa, Kazuhiro Yamamoto
We investigate the linear growth rate of cosmological matter density perturbations of a viable f(R) model both numerically and analytically. We find that the growth rate in the sca…