Gravitational Wave and Equation of State Working Group (February 1st 2020 - )


Since April 2019, the Laser Interferometer GW Observatory (LIGO) and Virgo have been operating as third observing run (O3 run) until April 2020. In addition to these GW detectors, the Japanese detector, KAGRA, has also started the engineering run since December 2019, and will start an observation run after February 2020. Furthermore, discussion for the third-generation GW detectors, such as the Einstein Telescope and Cosmic Explorer, has already been started. With these detectors, it is expected that the number of GW events would increase more and more in the near future. In such an era, the GWs from not only the compact binary mergers but also core-collapse supernova explosions might be detected.

Due to quite high permeability of GWs, one expects to get raw information of source objects via GW observations. This is one of the significances for detecting the GWs. That is, through the GW observations, one may see “invisible” interior properties. In this working group, we especially focus on the following points:

  1. Understanding the GW spectrum from the core-collapse supernova
  2. Finding the universal relation in GW frequencies
  3. Associating the GW frequencies with the nuclear saturation parameters
  4. Discussion and exploration of the newly obtained GW data
Hajime Sotani (RIKEN) *Contact at
Tomoya Takiwaki (NAOJ)
Hajime Togashi (Kyushu University)