НАУКА: архів статей

Оглядова доповідь П.П.Берцика "Galaxy collision simulations with central Post Newtonian Supermassive Binary Black Holes" на конференції IAS "Stellar Dynamics in Galactic Nuclei November 29 - December 1, 2017" в Принстоні (США) 1 грудня 2017 р.

Abstract. Generally accepted that one of the most strong sources of the long time ago predicted gravitational waves (GW) are a merging Supermassive Binary Black Holes (SMBBH). In our high order Post Newtonian (PN) N-body simulations we try to study this process with the maximum possible today numerical resolution. For the simulations we use the largest astrophysical Graphical Processing Unit (GPU) accelerated clusters, including the Piz Daint GPU supercomputer in Switzerland which hold the third place in the recent top500 list (November 2017). The central SMBBH are simulated as a special particles with the PN force corrections (up to 1/c**7 terms) implemented for the BH's gravitational interactions. We prove that the SMBBH merging time scale shows a quite strong dependency from the merging galaxies mass ratios. For some particular SMBBH observational galaxy pairs candidates we obtain from our simulations the upper time limits for final GW merging.

 

Сторінка конференції: stellar-dynamics-workshop