282 citations · 2.7k across the 89 of their papers we have counts for
Showing 1995Show all
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astro-ph1995★ 2 cited
Volume Expansion Rate and The Age of The Universe
Takashi Nakamura, Ken-ichi Nakao, Takeshi Chiba +1
Under four assumptions such that 1) Einstein's theory of gravity is correct, 2) existence of foliation by geodesic slicing, 3) the trace of the extrinsic curvature, , is negativ…
gr-qc1995★ 8 cited
On a Quasi-Local Energy Outside the Cosmological Horizon
Ken-ichi Nakao
We investigate a quasi-local energy naturally introduced by Kodama's prescription for a spherically symmetric space-time with a positive cosmological constant . We find that thi…
astro-ph1995★ 11 cited
Hubble Parameter in Void Universe
Ken-ichi Nakao, Naoteru Gouda, Takeshi Chiba +3
We investigate the distance-redshift relation in the simple void model. As discussed by Moffat and Tatarski, if the observer stays at the center of the void, the observed Hubble pa…