Rio Saitou

activity

20112024

most citedDerivative-dependent metric transformation and physical degrees of freedom

117 citations · 295 across the 15 of their papers we have counts for

collaborators

Showing 2020Show all

2 papers · 1 filter

gr-qc2020

Light deflection in Observation: Angle differences between two null geodesics on the de Sitter spacetime with multi-lensing objects

Rio Saitou, Hiromi Saida

We derive angle differences between two null geodesics, propagating from light sources to an observer, on the de Sitter spacetime with multi-lensing objects. Assuming the lensing o…

astro-ph.GA2020★ 4 cited

Constraints on the dark mass distribution surrounding Sgr A*: simple $χ^{2}$ analysis for the redshift of photons from orbiting stars

Yohsuke Takamori, Shogo Nishiyama, Takayuki Ohgami +3

Sagittarius A* (Sgr A*) is the central supermassive black hole with the mass $\sim 4 \times 1 0^{6} M_{⊙}$ in the Milky Way and stars are orbiting around it. In May 2018, one of th…

Light deflection in Observation: Angle differences between two null geodesics on the de Sitter spacetime with multi-lensing objects

Constraints on the dark mass distribution surrounding Sgr A*: simple χ2 analysis for the redshift of photons from orbiting stars

Constraints on the dark mass distribution surrounding Sgr A*: simple $χ^{2}$ analysis for the redshift of photons from orbiting stars