[[UTAPwiki/セミナー/初期宇宙・相対論速報]] * On polarizations of non-luminal gravitational waves [#o34701e5] ** Hiroaki Tahara [#d29fba98] If GWs are subluminal or superluminal, there must be a special frame (e.g. unitary frame of a scalar tensor theory). Although the simultaneous observations of binary merger with light and GWs have given a constraint on the speed of GWs around 100 Hz, its propagation speed at lower frequency (<10 Hz) is still free from that constraint. I will talk about polarizations of sub/superluminal GWs in Horndeski theory, considering the relative speed of the solar system to the unitary frame. |