Description
Chair: Tatsuki Washimi (NAOJ)
Gravitational-wave observations have delivered a lot of information about black holes and neutron stars. Although most features are consistent with our current understanding about standard physics, severe astronomical uncertainties leave the room of possible deviations. Future detectors with high sensitivity will also allow us to investigate more extreme conditions, e.g., ultrahigh density. In...
Gravitational waves are a new observational probe that can enable data-driven tests of the fundamental laws of physics that govern the Universe. I will discuss how this avenue can explore new frontiers that can shape our understanding of astrophysics and cosmology. I will show some latest findings using the current gravitational wave data and discuss novel techniques for discovering new...
It is known that black holes have unsolved problems such as the singularity problem and the information loss problem. To solve these problems, as one of the black hole mimicker, gravastar is proposed. Gravastar is filled by cosmological constant, and therefore metric is de-Sitter inside the star. In usual, gravastar solutions are constructed by using Israel's junction condition. By the way, in...
