Constraining the Equation of State of Neutron Stars via Accurate Gravitational Waveforms from Binary Neutron Stars

2016 Fiscal Year Final Research Report

• Project/Area Number: 15H06813
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Kobe City College of Technology
• Principal Investigator: Takami Kentaro 神戸市立工業高等専門学校, その他部局等, 講師 (70758002)
• Research Collaborator: Rezzolla Luciano Goethe University Frankfurt, Institute for Theoretical Physics, 教授
• Project Period (FY): 2015-08-28 – 2017-03-31
• Keywords: 宇宙物理 / 計算物理 / 理論天文学 / 重力波 / 連星中性子星 / 数値相対論 / 状態方程式 / 大質量星

Outline of Final Research Achievements

The first direct gravitational wave (GW) signal, which has been interpreted as from a binary black hole, were observed in 14 September 2015. Therefore it is urgently necessary to theoretically understand "nature" related to GW for new era of GW astronomy.
The main purpose in this study had been to extract information of neutron stars (NSs) from GW of binary NS mergers.
Then we had obtained many important results. For example, the universal relations between the characteristic frequencies of GW and the physical quantities of NSs, have been found. By using the relations, in addition, we have constructed the powerful methods to decide the radii and an equation of state of NSs.

Free Research Field

理論宇宙物理学