About SAKAI Nobuyuki
About Yamaguchi Univ., Yamaguchi, JPN
About SAIDA Hiromi
About Daido Univ., Nagoya, JPN
About TAMAKI Takashi
About Nihon Univ., Fukushima, JPN
About Physical Review. D. Particles, Fields, Gravitation, and Cosmology
About black hole
About astronomy
About circular orbit
About photon
About gravitational collapse
About optical image
About radio astronomy
About general relativity
About gravastar
About optical image
About General theory of relativity and theory of gravity
About Fixed stars