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Tjarda Coenraad Nico Boekholt. Completed the Doktor (PhD) in Astronomy in 2015/11/10 by Universiteit Leiden Faculteit der Wiskunde en Natuurwetenschappen and Master in Astronomy in 2011/09/01 by Universiteit Leiden Faculteit der Wiskunde en Natuurwetenschappen. Published 29 articles in journals. Organized 3 event(s). Co-supervised 2 PhD thesis(es). Supervised 2 MSc dissertation(s) e co-supervised 5. Has received 7 awards and/or honors. Participates and/or participated as PhD Student Fellow in 1 project(s) and Post-doc Fellow in 1 project(s). Works in the area(s) of Exact Sciences with emphasis on Physical Sciences with emphasis on Astronomy.
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Identificação

Identificação pessoal

Nome completo
Tjarda Coenraad Nico Boekholt

Nomes de citação

  • Boekholt, Tjarda
  • Boekholt, T. C. N.

Identificadores de autor

Ciência ID
DE1A-11C9-E912

Moradas

  • Moffett Field, 94035, Mountain View, California, Estados Unidos (Profissional)

Websites

Domínios de atuação

  • Ciências Exatas - Física - Astronomia

Idiomas

Idioma Conversação Leitura Escrita Compreensão Peer-review
Holandês (Idioma materno)
Inglês Utilizador proficiente (C2) Utilizador proficiente (C2) Utilizador proficiente (C2) Utilizador proficiente (C2) Utilizador proficiente (C2)
Português Utilizador elementar (A1) Utilizador elementar (A1) Utilizador elementar (A1) Utilizador elementar (A1) Utilizador elementar (A1)
Formação
Grau Classificação
2011/10/01 - 2015/11/10
Concluído
 Astronomy (Doktor (PhD))
Especialização em Computational Astrophysics
Universiteit Leiden Faculteit der Wiskunde en Natuurwetenschappen, Países Baixos
"Chaotic Dynamics in N-body Systems" (TESE/DISSERTAÇÃO)
2009/09/01 - 2011/09/01
Concluído
 Astronomy (Master)
Especialização em Computational Astrophysics
Universiteit Leiden Faculteit der Wiskunde en Natuurwetenschappen, Países Baixos
"Arbitrary-precision N-body Code" (TESE/DISSERTAÇÃO)
Percurso profissional

Ciência

Categoria Profissional
Instituição de acolhimento 		Empregador
2024/01/18 - 2026/01/17 Investigador Auxiliar (carreira) (Investigação) Oak Ridge Associated Universities, Estados Unidos
NASA Ames Research Center, Estados Unidos
2020/09/01 - 2023/09/30 Pós-doutorado (Investigação) University of Oxford Department of Physics, Reino Unido
University of Oxford Rudolf Peierls Centre for Theoretical Physics, Reino Unido
2020/01/01 - 2020/08/31 Pós-doutorado (Investigação) Universidade de Coimbra, Portugal
Universidade de Coimbra Centro de Física, Portugal
2019/07/01 - 2019/12/31 Pós-doutorado (Investigação) Instituto de Telecomunicações Campus Universitário de Santiago, Portugal
Instituto de Telecomunicações Campus Universitário de Santiago, Portugal
2017/07/01 - 2019/06/30 Investigador (Investigação) Universidade de Aveiro, Portugal
Universidade de Aveiro Centro de Investigação e Desenvolvimento em Matemática e Aplicações, Portugal
2016/11/15 - 2017/04/15 Pós-doutorado (Investigação) Universidad de Concepción, Chile
Universidad de Concepción, Chile
Projetos

Projeto

Designação Financiadores
2017/07/01 - 2020/08/30 ENGAGE-SKA
POCI-01-0145-FEDER- 022217
POCI-01-0145-FEDER-029932
Bolseiro de Pós-Doutoramento
Instituto de Telecomunicações Campus Universitário de Santiago, Portugal

Universidade de Coimbra, Portugal
Em curso
2011/10/01 - 2015/11/10 AMUSE: Astrophysical Multi-purpose Software Environment
643.200.503
639.073.803
614.061.608
Bolseiro de Doutoramento
Universiteit Leiden Faculteit der Wiskunde en Natuurwetenschappen, Países Baixos
Concluído
Produções

Publicações

Artigo em conferência
  1. Zwart, Simon Portegies; Boekholt, Tjarda. "The paradox of infinitesimal granularity: Chaos and the reversibility of time in Newton’s theory of gravity". 2023.
    10.1063/5.0163734
Artigo em revista
  1. Rowan, Connar; Whitehead, Henry; Boekholt, Tjarda; Kocsis, Bence; Haiman, Zoltán. "Black hole binaries in AGN accretion discs – II. Gas effects on black hole satellite scatterings". Monthly Notices of the Royal Astronomical Society 527 4 (2023): 10448-10468. http://dx.doi.org/10.1093/mnras/stad3641.
    10.1093/mnras/stad3641
  2. Portegies Zwart, Simon F; Boekholt, Tjarda C N; Heggie, Douglas C. "Punctuated chaos and the unpredictability of the Galactic Centre S-star orbital evolution". Monthly Notices of the Royal Astronomical Society 526 4 (2023): 5791-5799. http://dx.doi.org/10.1093/mnras/stad2654.
    10.1093/mnras/stad2654
  3. Boekholt, Tjarda C. N.; Portegies Zwart, Simon F.; Heggie, Douglas C.. "Punctuated chaos and indeterminism in self-gravitating many-body systems". International Journal of Modern Physics D 32 14 (2023): http://dx.doi.org/10.1142/s0218271823420038.
    10.1142/s0218271823420038
  4. Rowan, Connar; Boekholt, Tjarda; Kocsis, Bence; Haiman, Zoltán. "Black hole binary formation in AGN discs: from isolation to merger". Monthly Notices of the Royal Astronomical Society 524 2 (2023): 2770-2796. http://dx.doi.org/10.1093/mnras/stad1926.
    10.1093/mnras/stad1926
  5. Carrillo, D R Matus; Fellhauer, M; Boekholt, T C N; Stutz, A; Inostroza, M C B Morales. "Stirred, not shaken: Star cluster survival in the slingshot scenario". Monthly Notices of the Royal Astronomical Society (2023): http://dx.doi.org/10.1093/mnras/stad1256.
    Publicado • 10.1093/mnras/stad1256
  6. Boekholt, Tjarda C N; Correia, Alexandre C M. "A direct N-body integrator for modelling the chaotic, tidal dynamics of multibody extrasolar systems: TIDYMESS". Monthly Notices of the Royal Astronomical Society 522 2 (2023): 2885-2900. http://dx.doi.org/10.1093/mnras/stad1133.
    Publicado • 10.1093/mnras/stad1133
  7. Boekholt, Tjarda C N; Vaillant, Timothée; Correia, Alexandre C M. "Reversible time-step adaptation for the integration of few-body systems". Monthly Notices of the Royal Astronomical Society 519 3 (2022): 3281-3291. http://dx.doi.org/10.1093/mnras/stac3777.
    Publicado • 10.1093/mnras/stac3777
  8. Boekholt, Tjarda C N; Rowan, Connar; Kocsis, Bence. "On the Jacobi capture origin of binaries with applications to the Earth-Moon system and black holes in galactic nuclei". Monthly Notices of the Royal Astronomical Society 518 4 (2022): 5653-5669. http://dx.doi.org/10.1093/mnras/stac3495.
    Publicado • 10.1093/mnras/stac3495
  9. Knigge, C; Toonen, S; Boekholt, T C N. "A triple star origin for T Pyx and other short-period recurrent novae". Monthly Notices of the Royal Astronomical Society 514 2 (2022): 1895-1907. http://dx.doi.org/10.1093/mnras/stac1336.
    10.1093/mnras/stac1336
  10. Toonen, S.; Boekholt, T. C. N.; Portegies Zwart, S.. "Stellar triples on the edge". Astronomy & Astrophysics 661 (2022): A61. http://dx.doi.org/10.1051/0004-6361/202141991.
    10.1051/0004-6361/202141991
  11. Portegies Zwart, S. F.; Boekholt, T. C. N.; Por, E. H.; Hamers, A. S.; McMillan, S. L. W.. "Chaos in self-gravitating many-body systems". Astronomy & Astrophysics 659 (2022): A86. http://dx.doi.org/10.1051/0004-6361/202141789.
    10.1051/0004-6361/202141789
  12. Boekholt, Tjarda C.¿N.; Moerman, Arend; Portegies Zwart, Simon F.. "Relativistic Pythagorean three-body problem". Physical Review D 104 8 (2021): http://dx.doi.org/10.1103/physrevd.104.083020.
    10.1103/physrevd.104.083020
  13. Barbosa, Domingos; Coelho, Bruno; Antón, Sonia; Bergano, Miguel; Boekholt, Tjarda; Correia, Alexandre C.M.; Maia, Dalmiro; et al. "Radio astronomy and Space science in Azores: Enhancing the Atlantic VLBI infrastructure cluster". Advances in Space Research 68 7 (2021): 3064-3078. http://dx.doi.org/10.1016/j.asr.2021.05.023.
    10.1016/j.asr.2021.05.023
  14. Das, Arpan; Schleicher, Dominik R G; Basu, Shantanu; Boekholt, Tjarda C N. "Effect of mass-loss due to stellar winds on the formation of supermassive black hole seeds in dense nuclear star clusters". Monthly Notices of the Royal Astronomical Society 505 2 (2021): 2186-2194. http://dx.doi.org/10.1093/mnras/stab1428.
    10.1093/mnras/stab1428
  15. Vergara, M. Z. C.; Schleicher, D. R. G.; Boekholt, T. C. N.; Reinoso, B.; Fellhauer, M.; Klessen, R. S.; Leigh, N. W. C.. "Stellar collisions in flattened and rotating Population III star clusters". Astronomy & Astrophysics 649 (2021): A160. http://dx.doi.org/10.1051/0004-6361/202140298.
    10.1051/0004-6361/202140298
  16. Das, Arpan; Schleicher, Dominik R G; Leigh, Nathan W C; Boekholt, Tjarda C N. "Formation of supermassive black hole seeds in nuclear star clusters via gas accretion and runaway collisions". Monthly Notices of the Royal Astronomical Society (2021): http://dx.doi.org/10.1093/mnras/stab402.
    10.1093/mnras/stab402
  17. Breen, Philip G; Foley, Christopher N; Boekholt, Tjarda; Zwart, Simon Portegies. "Newton versus the machine: solving the chaotic three-body problem using deep neural networks". Monthly Notices of the Royal Astronomical Society 494 2 (2020): 2465-2470. http://dx.doi.org/10.1093/mnras/staa713.
    10.1093/mnras/staa713
  18. Alister Seguel, P J; Schleicher, D R G; Boekholt, T C N; Fellhauer, M; Klessen, R S. "Formation of SMBH seeds in Population III star clusters through collisions: the importance of mass loss". Monthly Notices of the Royal Astronomical Society 493 2 (2020): 2352-2362. http://dx.doi.org/10.1093/mnras/staa456.
    10.1093/mnras/staa456
  19. Boekholt, T C N; Portegies Zwart, S F; Valtonen, M. "Gargantuan chaotic gravitational three-body systems and their irreversibility to the Planck length". Monthly Notices of the Royal Astronomical Society 493 3 (2020): 3932-3937. http://dx.doi.org/10.1093/mnras/staa452.
    Publicado • 10.1093/mnras/staa452
  20. Portegies Zwart, Simon F.; Boekholt, Tjarda C.N.. "Numerical verification of the microscopic time reversibility of Newton’s equations of motion: Fighting exponential divergence". Communications in Nonlinear Science and Numerical Simulation 61 (2018): 160-166. http://dx.doi.org/10.1016/j.cnsns.2018.02.002.
    10.1016/j.cnsns.2018.02.002
  21. Reinoso, B.; Schleicher, D. R. G.; Fellhauer, M.; Klessen, R. S.; Boekholt, T. C. N.. "Collisions in primordial star clusters". Astronomy & Astrophysics 614 (2018): A14. http://dx.doi.org/10.1051/0004-6361/201732224.
    10.1051/0004-6361/201732224
  22. Boekholt, T C N; Schleicher, D R G; Fellhauer, M; Klessen, R S; Reinoso, B; Stutz, A M; Haemmerlé, L. "Formation of massive seed black holes via collisions and accretion". Monthly Notices of the Royal Astronomical Society 476 1 (2018): 366-380. http://dx.doi.org/10.1093/mnras/sty208.
    10.1093/mnras/sty208
  23. Boekholt, T. C. N.; Stutz, A. M.; Fellhauer, M.; Schleicher, D. R. G.; Matus Carrillo, D. R.. "Dynamical ejections of stars due to an accelerating gas filament". Monthly Notices of the Royal Astronomical Society 471 3 (2017): 3590-3598. http://dx.doi.org/10.1093/mnras/stx1821.
    10.1093/mnras/stx1821
  24. Toonen, S.; Hollands, M.; Gänsicke, B. T.; Boekholt, T.. "The binarity of the local white dwarf population". Astronomy & Astrophysics 602 (2017): A16. http://dx.doi.org/10.1051/0004-6361/201629978.
    10.1051/0004-6361/201629978
  25. Boekholt, T. C. N.; Pelupessy, F. I.; Heggie, D. C.; Portegies Zwart, S. F.. "The origin of chaos in the orbit of comet 1P/Halley". Monthly Notices of the Royal Astronomical Society 461 4 (2016): 3576-3584. http://dx.doi.org/10.1093/mnras/stw1504.
    10.1093/mnras/stw1504
  26. Martínez-Barbosa, C. A.; Brown, A. G. A; Boekholt, T.; Portegies Zwart, S.; Antiche, E.; Antoja, T.. "The evolution of the Sun's birth cluster and the search for the solar siblings withGaia". Monthly Notices of the Royal Astronomical Society 457 1 (2016): 1062-1075. http://dx.doi.org/10.1093/mnras/stw006.
    10.1093/mnras/stw006
  27. Boekholt, Tjarda; Portegies Zwart, Simon. "On the reliability of N-body simulations". Computational Astrophysics and Cosmology 2 1 (2015): http://dx.doi.org/10.1186/s40668-014-0005-3.
    10.1186/s40668-014-0005-3
  28. Portegies Zwart, Simon; Boekholt, Tjarda. "On the Minimal Accuracy Required for Simulating Self-gravitating Systems by Means of Direct N-body Methods". The Astrophysical Journal 785 1 (2014): L3. http://dx.doi.org/10.1088/2041-8205/785/1/l3.
    10.1088/2041-8205/785/1/l3
  29. Gonçalves Ferrari, G.; Boekholt, T.; Portegies Zwart, S. F.. "A Keplerian-based Hamiltonian splitting for gravitational N-body simulations". Monthly Notices of the Royal Astronomical Society 440 1 (2014): 719-730. http://dx.doi.org/10.1093/mnras/stu282.
    10.1093/mnras/stu282

Outros

Software
  1. Boekholt, T. C. N.; Correia, Alexandre C. M.. "TIDYMESS". 2023.
Atividades

Apresentação oral de trabalho

Título da apresentação Nome do evento
Anfitrião (Local do evento)
2023/04 Chaotic triples and their irreversibility to the Planck length Varieties of Indeterminism
University of Geneva (Les Diablerets, Suiça)
2023/01 Chaos in astrophysical N-body systems Outreach talk
International Amateur Astronomical Association (Índia)
2022/05 Dynamical formation channels for gravitational wave sources Colloquium
University of Warwick (Reino Unido)
2022/05 Formation of gravitational wave sources Gravitational Wave workshop
Niels Bohr Institute (Copenhagen, Dinamarca)
2021/05 Chaotic triples and their irreversibility to the Planck length Division of Dynamical Astronomy 52
AAS/DDA (Estados Unidos)
2021/04 Dynamical chaos in N-body systems Colloquium
University of Coimbra (Portugal)
2019/11 Dynamical formation channels for gravitational wave sources Colloquium
University of Birmingham (Reino Unido)
2018/11 Modeling star cluster formation in the Slingshot paradigm Colloquium
Pontificia Universidad Catolica de Chile (Santiago, Chile)
2018/09 Accurate and precise N-body simulations Colloquium
Canadian Institute for Theoretical Astrophysics (Toronto, Canadá)
2018/02 Star cluster formation in gas filaments: testing the Slingshot paradigm Colloquium
Tokyo University (Tokyo, Japão)

Orientação

Título / Tema
Papel desempenhado 		Curso (Tipo)
Instituição / Organização
2022 - 2023 Tidally Torqued ‘Spin Up’ in Hierarchical Triple Star Systems near to the Edge of Stability
Orientador
 Astronomy (Mestrado)
University of Oxford Department of Physics, Reino Unido
2022 - 2023 Modelling non-conservative tidal forces during Jacobi captures between Mercurian and Venusian Analogues
Orientador
 Astronomy (Mestrado)
University of Oxford Department of Physics, Reino Unido
2020 - 2023 Black Hole Binary Formation in AGN Discs: From Isolation to Merger
Coorientador
 Astronomy (Doutoramento)
University of Oxford Department of Physics, Reino Unido
2020 - 2021 The relativistic Pythagorean 3-body problem
Coorientador
 Astronomy (Mestrado)
Universiteit Leiden Sterrewacht Leiden, Países Baixos
2020 - 2021 Effect of mass loss due to stellar winds on the final mass of supermassive black hole seeds in metal enriched dense nuclear star clusters
Coorientador
 Astronomy (Doutoramento)
Universidad de Concepción, Chile
2018 - 2019 Stellar collisions in flattened and rotating Pop. III systems
Coorientador
 Astronomy (Mestrado)
Universidad de Concepción, Chile
2018 - 2019 Formation of SMBH seeds in Population III star clusters through collisions: the importance of mass loss
Coorientador
 Astronomy (Mestrado)
Universidad de Concepción, Chile
2016 - 2017 Stirred, not shaken: the fate of the Orion Nebula Cluster in the Integral Shaped Filament
Coorientador
 Astronomy (Mestrado)
Universidad de Concepción, Chile
2016 - 2017 Collisions in Primordial Star Clusters: Formation Pathway for intermediate mass black holes
Coorientador
 Astronomy (Mestrado)
Universidad de Concepción, Chile

Organização de evento

Nome do evento
Tipo de evento (Tipo de participação) 		Instituição / Organização
2023/01 - Atual SOC member and initiator Lorentz Center workshop: Tidal Evolution Research Review for Astrophysics (2023/01)
Oficina (workshop) (Membro da Comissão Científica)
 Lorentz Center, Países Baixos
2023/01 - 2023/07 SOC member of Gravitational Wave Sessions. National Astronomy Meeting 2023 (Cardiff, UK). (2023/07)
Conferência (Membro da Comissão Científica)
 University of Wales Cardiff, Reino Unido
2019/05/12 - 2019/05/15 LOC workshop: Multi-messenger astronomy with SKA precursors and pathfinders, a capacity building workshop. More info: http://mmska2019.av.it.pt/ (2019/05/12 - 2019/05/15)
Oficina (workshop) (Membro da Comissão Organizadora)
 Instituto de Telecomunicações Campus Universitário de Santiago, Portugal

Curso / Disciplina lecionado

Disciplina Curso (Tipo) Instituição / Organização
2018/10/19 - 2018/11/11 Introduction to the AMUSE software framework (Bachelor) Universidad de Concepción, Chile

Entrevista (jornal / revista)

Descrição da atividade Jornal / Forum
2020/04/06 Science News: Quantum mechanics means some black hole orbits are impossible to predict Science News
2020/04/04 Forbes: Ask Ethan: Why Can't Time Be Reversed For Three-Body Systems? Forbes
2020/03/31 New Scientist: Even a computer the size of the universe can’t predict everything New Scientist

Revisão ad hoc de artigos em revista

Nome da revista (ISSN) Editora
2021 - Atual Revista Mexicana de Astronomia y Astrofisica
2017 - Atual Monthly Notices of the Royal Astronomical Society

Tutoria

Tópico Nome do aluno
2022/09 - 2022/12 Mathematical Methods Five 2nd year Physics students
Distinções

Prémio

2023 NASA Postdoctoral Program Fellowship
Oak Ridge Associated Universities, Estados Unidos
2018 Young Doctor Award
Universidade de Aveiro Centro de Investigação e Desenvolvimento em Matemática e Aplicações, Portugal
2014 Wim Nieuwpoort Award
SURFsara, Países Baixos

Outra distinção

2021 DiRAC HPC facilities: 2M cpu hours of computing time
Distributed Research using Advanced Computing (DiRAC), UK, Reino Unido
2020 Humboldt Post-doctoral Fellowship
Alexander von Humboldt-Stiftung, Alemanha
2016 FONDECYT Post-doctoral Fellowship
Comisión Nacional de Investigación Científica y Tecnológica Fondo Nacional de Desarrollo Científico y Tecnológico, Chile
2016 FCT Post-doctoral Fellowship
Fundação para a Ciência e a Tecnologia, Portugal