112 citations · 312 across the 7 of their papers we have counts for
7 papers
Gravitational Redshifts in Clusters and Voids
Daiki Sakuma, Ayumu Terukina, Kazuhiro Yamamoto +1
Gravitational redshift as a relativistic effect in cosmological objects is investigated. Possible signatures of the gravitational redshift in measurements of satellite galaxies in…
The XMM Cluster Survey: Testing chameleon gravity using the profiles of clusters
Harry Wilcox, David Bacon, Robert C. Nichol +17
The chameleon gravity model postulates the existence of a scalar field that couples with matter to mediate a fifth force. If it exists, this fifth force would influence the hot X-r…
Third order solutions of the cosmological density perturbations in the Horndeski's most general scalar-tensor theory with the Vainshtein mechanism
Yuichiro Takushima, Ayumu Terukina, Kazuhiro Yamamoto
We study the third order solutions of the cosmological density perturbations in the Horndeski's most general scalar-tensor theory under the condition that the Vainshtein mechanism…
What can we learn from higher multipole power spectra of galaxy distribution in redshift space?
Tatsuro Kanemaru, Chiaki Hikage, Gert Huetsi +2
We investigate a potential of the higher multipole power spectra of the galaxy distribution in redshift space as a cosmological probe on halo scales. Based on the fact that a halo…
Testing chameleon gravity with the Coma cluster
Ayumu Terukina, Lucas Lombriser, Kazuhiro Yamamoto +3
We propose a novel method to test the gravitational interactions in the outskirts of galaxy clusters. When gravity is modified, this is typically accompanied by the introduction of…
Bispectrum of cosmological density perturbations in the most general second-order scalar-tensor theory
Yuichiro Takushima, Ayumu Terukina, Kazuhiro Yamamoto
We study the bispectrum of the matter density perturbations induced by the large scale structure formation in the most general second-order scalar-tensor theory that may possess th…
Gas density profile in dark matter halo in chameleon cosmology
Ayumu Terukina, Kazuhiro Yamamoto
We investigate the gas density, temperature, and pressure profiles in a dark matter halo under the influence of the chameleon force. We solve the hydrostatic equilibrium equation f…