2 papers
gr-qc1996
Surface gravity in dynamical spherically symmetric spacetimes
G. Fodor, K. Nakamura, Y. Oshiro +1
A definition of surface gravity at the apparent horizon of dynamical spherically symmetric spacetimes is proposed. It is based on a unique foliation by ingoing null hypersurfaces.…
gr-qc1994
Critical Behavior of Black Hole Formation in a Scalar Wave Collapse
Y. Oshiro, K. Nakamura, A. Tomimatsu
We present a self-similar model of spherically symmetric collapse of a massless scalar field with a parameter . The black hole formation is explicitly shown to occur only in the…