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Study of relativistic binaries by black hole perturbation approach

Research Project

Project/Area Number 25800154
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionKyushu University

Principal Investigator

SAGO Norichika  九州大学, 基幹教育院, 助教 (50540291)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywordsブラックホール摂動法 / 重力波
Outline of Final Research Achievements

I investigated the dynamics of compact binaries and the gravitational perturbation by using black hole perturbation theory.
In this theory, a binary system is treated as a system consisting of a point mass orbiting a black hole. The orbital evolution and the gravitational wave emitted from the system can be evaluated from the gravitational perturbation of the background spacetime induced by the point mass. In numerical calculations of the perturbation, unphysical, problematic modes appear in the monopole and dipole components and hinder obtaining the physical solution. I investigated these problematic modes and suggested preparing appropriate initial conditions to solve the problem.
I also studied methods of describing the orbital evolution of the point mass by extending the canonical formulation with the action-angle variables, or by combining the other approaches, for example, the post-Newtonian method.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (7 results)

All 2015 2013 Other

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 1 results,  Acknowledgement Compliant: 2 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Calculation of radiation reaction effect on orbital parameters in Kerr spacetime2015

    • Author(s)
      Norichika Sago, Ryuichi Fujita
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2015 Issue: 7 Pages: 073E03-073E03

    • DOI

      10.1093/ptep/ptv092

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Comparison Between Self-Force and Post-Newtonian Dynamics: Beyond Circular Orbits2015

    • Author(s)
      Sarp Akcay, Alexandre Le Tiec, Leor Barack, Norichika Sago, Niels Warburton
    • Journal Title

      Physical Review D

      Volume: 91 Issue: 12 Pages: 124014-124014

    • DOI

      10.1103/physrevd.91.124014

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Evolution of the Carter constant for resonant inspirals into a Kerr black hole: I. The scalar case2013

    • Author(s)
      Soichiro Isoyama, Ryuichi Fujita, Hiroyuki Nakano, Norichika Sago, Takahiro Tanaka
    • Journal Title

      PTEP

      Volume: 2013 Issue: 6 Pages: 63E01-0

    • DOI

      10.1093/ptep/ptt034

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Calculation of radiation reaction effect on orbital parameters in Kerr spacetime2015

    • Author(s)
      佐合紀親
    • Organizer
      18th Capra Meeting on Radiation Reaction in General Relativity
    • Place of Presentation
      京都大学
    • Year and Date
      2015-06-29
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ブラックホール摂動のモノポールモード問題について2015

    • Author(s)
      佐合紀親,Leor Barack
    • Organizer
      日本物理学会第70回年次大会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2015-03-23
    • Related Report
      2014 Research-status Report
  • [Presentation] カー時空における質点の運動のハミルトン形式による定式化

    • Author(s)
      佐合紀親,磯山総一郎,藤田龍一,中野寛之,田中貴浩
    • Organizer
      日本物理学会第69回年次大会
    • Place of Presentation
      東海大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Modeling of the secular evolution of the inspiral orbit around a Kerr black hole

    • Author(s)
      Norichika Sago, Soichiro Isoyama, Takahiro Tanaka, Ryuichi Fujita, Hiroyuki Nakano
    • Organizer
      The 23rd Workshop on General Relativity and Gravitation in Japan
    • Place of Presentation
      弘前大学
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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