2019 Fiscal Year Annual Research Report
The nexus between kinematic complexity and black holes in star clusters
| Project/Area Number |
18F18787
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| Research Institution | The University of Tokyo |
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Principal Investigator |
藤井 通子 東京大学, 大学院理学系研究科(理学部), 准教授 (90722330)
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| Co-Investigator(Kenkyū-buntansha) |
VARRI ANNA LISA 東京大学, 理学(系)研究科(研究院), 外国人特別研究員
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| Project Period (FY) |
2018-11-09 – 2020-03-31
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| Keywords | star cluster / binary / black hole |
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| Outline of Annual Research Achievements |
This programme of research is aimed at investigating the physical origin of the nexus between‘kinematic complexity’and black holes in collisional stellar systems, especially star clusters. The activities were structured in three main phases: (i) formation, (ii) equilibrium, (iii) evolution.
On phase (i), I have pushed forward the theoretical investigation of the role of 'kinematic complexity' in the dynamics of star clusters. Two articles have been submitted to peer-reviewed journals and two additional papers will be submitted shortly. These manuscripts have been prepared in collaboration with researchers at Univ. Edinburgh. Two additional articles on previously started projects have also been accepted for publications.
On phase (ii), I have started the construction of equilibrium dynamical models with a central black hole and I have made good progress in the analysis of the observational data from Gaia Data Release 2. A manuscript describing this study is currently in preparation and will be submitted soon.
Phase (iii) was expected to take place in Year 2, therefore has not started yet.
After the Fellowship interruption (due to new employment at Univ. Edinburgh), I have been based at UTokyo as a Visiting Associate for six months. In the future, I will continue to collaborate with Prof Fujii on phase (iii) and on other projects which we have already initiated in collaboration with researchers at the UTokyo Dept. of Physics and RIKEN in Kobe.
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| Research Progress Status |
令和元年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和元年度が最終年度であるため、記入しない。
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| Remarks |
(1)The lecture was delivered at Urawa-Akenohoshi High School. I have also been invited by the JSPS to present a talk about my JSPS Science Dialogue experience at the European Research Night.
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[Journal Article] Mapping the stability of stellar rotating spheres via linear response theory2019
Author(s)
Rozier, S., Fouvry, J.-B., Breen, P. G., Varri, A. L. , Pichon, C., Heggie, D. C.
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Journal Title
Monthly Notices of the Royal Astron omical Society
Volume: 487
Pages: 711-728
DOI
Peer Reviewed / Int'l Joint Research
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