13-18 December 2015
International Conference Centre Geneva
Europe/Zurich timezone

Dynamical mass ejection from black hole-neutron star binaries

15 Dec 2015, 14:42
Level 2, Room 7&8 (International Conference Centre Geneva)

Level 2, Room 7&8

International Conference Centre Geneva

17 Rue de Varembé, 1211 Geneva


Dr Koutarou Kyutoku (RIKEN)


In recent years, mass ejection from compact binary coalescences has been getting a lot more attention. Neutron-rich material ejected from neutron stars during such a coalescence event are increasingly recognized as the most promising site of the rapid process (r-process) nucleosynthesis. Mass ejection will also be the primary agent for driving electromagnetic radiation from compact binary mergers, or electromagnetic counterparts to gravitational waves. Simultaneous detection of electromagnetic counterparts with gravitational waves is eagerly desired, particularly for accurate source localization. Because mass ejection from black hole-neutron star binaries is a violent phenomenon involving disruption of neutron stars, numerical relativity is the only reliable approach for theoretical investigation. In this talk, we present our latest results for dynamical mass ejection from the black hole-neutron star binary merger obtained by numerical-relativity simulations. We also discuss possible electromagnetic counterparts from the anisotropic dynamical ejecta from black hole-neutron star binaries.

Primary author


Dr Hirotada Okawa (Waseda University) Prof. Keisuke Taniguchi (University of the Ryukyus) Prof. Kunihito Ioka (KEK) Prof. Masaru Shibata (Kyoto University)

Presentation Materials