Curriculum Vitae

Currently I’m a Ph.D candidate at SOKENDAI and an Associate Researcher at the National Astronomical Observatory of Japan (NAOJ).

You can see a brief version of my inside-and-outside-of-academia experience here.

For a list of my academic publications, you can click here.

If you are interested in some of my talks and presentations, come here.

Finally (but definitely not least), some outreach activity can be seen here (all in portuguese).

A PDF version of it can be accessed here

CV

Education

• Ph.D Candidate in Astronomy, Graduate University of Advanced Studies (SOKENDAI), Japan. 2024 - present
  • Research Project: Theoretical study of planetary dynamics
  • Supervisor: Eiichiro Kokubo
• M.Sc in Astronomy, University of São Paulo (IAG-USP), Brazil. 2020 - 2023
  • Research Project: Tools for detection of chaotic diffusion in dynamical systems
  • Supervisor: Tatiana Michtchenko
• B.Sc in Physics, University of São Paulo (IF-USP), Brazil. 2019 - 2019
• B.Sc in Astronomy, University of São Paulo (IAG-USP), Brazil. 2012-2018
  • Research Project: Chaos in Nonlinear Dynamical Systems: Frequency and Lyapunov Analysis; Web of Resonances

Research Experience

• Associate Researcher, National Astronomical Observatory of Japan (NAOJ), Japan. 2024 - present
• Graduate Research Intern, University of Tokyo (UTokyo), Japan. 2023 - 2023
• Graduate Researcher, University of São Paulo (IAG-USP), Brazil. 2020 - 2022
• Undergraduate Research Student, University of São Paulo (IAG-USP), Brazil. 2017 - 2018

Scholarships

• Monbukagakusho (MEXT) scholarship. 2023 - present
• Coordination for the Improvement of Higher Education Personnel (CAPES). 2020 - 2022
• National Council for Scientific and Technological Development (CNPq). 2017 - 2018

Grants

• SOKENDAI Overseas Travel Fund to attend DDA/AAS meeting (2025, $\approx$ USD1.320)
• SOKENDAI Overseas Travel Fund to attend NBIA Summer School (2024, $\approx$ USD2.000)

Other Relevant Experience

1. The Niels Bohr International Academy Summer School on Astrophysical Dynamics of Gravitating Systems, Copenhagen, Denmark. August/2024

Professional Experience

• Data Scientist at Fieldpro, Brazil. 2022 - 2023
• Data Analyst at São Paulo Municipal Government, Brazil. 2018-2020
• Web Development Intern at University of São Paulo (IAG-USP), Brazil. 2013 - 2014

Publications

A list of my publications, peer-reviewed, abstracts and outreach. Let’s hope it will get bigger in the next months.

Peer-reviewed Papers Publilshed

First-author

1. Guimarães, G. T., Michtchenko, T. A., Chaotic diffusion in the action and frequency domains: estimate of instability times, The European Physical Journal Special Topics. https://doi.org/10.1140/epjs/s11734-023-01017-x

   Second and third-author

2. Ceccatto, D. T., Callegari, N., Guimarães, G. T. , Gimenez, K., Orbital dynamics of Atlas (S XV): Its current orbit and the recent past, Planetary and Space Science. https://doi.org/10.1016/j.pss.2024.106016.

Master’s thesis

1. Guimarães, G. T., Michtchenko, T. A., Tools for detection of chaotic diffusion in dynamical systems. English version and Portuguese version.

Papers published in Conference Proceedings

1. Guimarães, G. T., Michtchenko, T. A., Chaotic diffusion in the action and frequency domains: estimate of instability times. Proceedings of the XLV Annual Meeting of the Brazilian Astronomical Society, 2022 https://sab-astro.org.br/sab/publicacoes/boletim-da-sab-vol-34/

Abstracts Published in Conference Proceedings

1. Guimarães, G. T., Kokubo, E., Orbital instabilities in compact planetary systems, AAS/Division of Dynamical Astronomy Meeting, 2025, https://ui.adsabs.harvard.edu/abs/2025DDA….5610304T
2. Guimarães, G. T., Michtchenko, T. A., Chaotic diffusion in the action and frequency domains: estimate of instability times Book of proceedings of the 21th Brazilian Colloquium on Orbital Dynamics - XXI CBDO, 2022
3. Guimarães, G. T., Michtchenko, T. A., Chaotic diffusion in the action and frequency domains Book of Proceedings of the XLV Annual Meeting of the Brazilian Astronomical Society, 2022
4. Guimarães, G. T., Michtchenko, T. A., Methods of detection of chaotic diffusion in dynamical systems Resúmenes de Presentaciones en Poster at the XI Taller De Ciencias Planetarias, 2022
5. Guimarães, G. T., Michtchenko, T. A., Methods of detection of chaotic diffusion in dynamical systems Book of proceedings of the 20th Brazilian Colloquium on Orbital Dynamics - XX CBDO, 2021
6. Guimarães, G. T., Michtchenko, T. A., Methods of detection of chaotic diffusion in dynamical systems Book of proceedings of the XLIV Annual Meeting of the Brazilian Astronomical Society - SAB, 2021
7. Guimarães, G. T., Michtchenko, T. A., Chaos in Nonlinear Dynamical Systems: Frequency analysis; diffusion timescales Book of proceedings of the 19th Brazilian Colloquium on Orbital Dynamics - XIX CBDO, 2018
8. Guimarães, G. T., Michtchenko, T. A., Nyquist Frequency, Chaos Detection and Orbit Determination SPANet Workshop on Time Series in Astronomy, 2018
9. Guimarães, G. T., Michtchenko, T. A., Chaos in the Dynamical Systems: Lyapunov and Frequency Analysis; Diffusion Timescales 26th International Symposium on Scientific and Technological Initiation at USP, 2018

Selected Talks

1. Orbital Instabilities of Compact Planetary Systems
   Oral Presentation at the Japan Geoscience Union Meeting - Chiba, Japan, 2025
2. Orbital Instabilities of Compact Planetary Systems
   Oral Presentation at 56th Annual meeting of the Division of Dynamical Astronomy of the American Astronomical Society (DDA/AAS) - Atlanta, USA, 2025
3. Orbital Instabilities of Compact Planetary Systems
   Oral Presentation at the Young Transiting Planets Workshop - Ishigakijima, Japan, 2025
4. Orbital Instabilities of Compact Planetary Systems
   Oral Presentation at Division of Science (DoS/NAOJ) workshop - Fujikawaguchiko, Japan, 2024
5. Orbital Instabilities of Compact Planetary Systems
   Poster Presentation at User’s meeting of the Center for Computational Astrophysics (CfCA) - Tokyo, Japan, 2024
6. Orbital Instabilities of Compact Planetary Systems
   Poster Presentation at the Autumn meeting of the Japanese Society of Planetary Systems - Fukuoka, Japan, 2024
7. Chaotic diffusion in the frequency space: the confined orbit of Atlas
   Oral Presentation at the PiotrFest conference From topology to computations in dynamical systems - Krakow, Poland, 2024.
8. Chaotic diffusion in the action and frequency domains: estimate of instability times.
   Oral Presentation at the 21th Brazilian Colloquium on Orbital Dynamics - XXI CBDO, São José dos Campos, Brazil, 2022.
9. Chaotic diffusion in the action and frequency domains.
   Poster Presentation at the XLV Annual Meeting of the Brazilian Astronomical Society - SAB, Brazil, 2022.
10. Methods of detection of chaotic diffusion in dynamical systems.
    Oral Presentation at the XI Taller De Ciencias Planetarias, Argentina, 2022.
11. Methods of detection of chaotic diffusion in dynamical systems.
    Poster Presentation at the 20th Brazilian Colloquium on Orbital Dynamics - XX CBDO, Brazil, 2021.
12. Methods of detection of chaotic diffusion in dynamical systems.
    Poster Presentation at the XLIV Annual Meeting of the Brazilian Astronomical Society - SAB, Brazil, 2021.
13. Chaos in Nonlinear Dynamical Systems: Frequency analysis; diffusion timescales.
    Poster presentation at the 19th Brazilian Colloquium on Orbital Dynamics - XIX CBDO, São José dos Campos, Brazil, 2018.
14. Nyquist Frequency, Chaos Detection and Orbit Determination.
    Poster presentation at the SPANET Workshop on Time Series in Astronomy, São Paulo, Brazil, 2018.

Outreach activities

Outreach Publications

Those are all in portuguese.

1. Guimarães, G. T., A busca por jovens planetas [The search for young planets], Boletim Dia e Noite com as Estrelas, June/2022
2. Guimarães, G. T., Editorial, Boletim Dia e Noite com as Estrelas, February/2022
3. Guimarães, G. T., Touchdown extraterrestre [Extraterrestrial touchdown], Boletim Dia e Noite com as Estrelas, January/2022
4. Guimarães, G. T., Lacunas no tempo [Gaps in time], Boletim Dia e Noite com as Estrelas, October/2021
5. Guimarães, G. T., A descoberta de um gigante [The discovery of a giant], Boletim Dia e Noite com as Estrelas, August/2021
6. Guimarães, G. T., Só mais uma galáxia? [Just another galaxy?], Boletim Dia e Noite com as Estrelas, June/2021
7. Guimarães, G. T., Um novo núcleo da terra? [A new earth core?], Boletim Dia e Noite com as Estrelas, April/2021
8. Guimarães, G. T., Editorial, Boletim Dia e Noite com as Estrelas, April/2021
9. Guimarães, G. T., Aglomerações estelares [Stellar crowds], Boletim Dia e Noite com as Estrelas, February/2021
10. Guimarães, G. T., Editorial, Boletim Dia e Noite com as Estrelas, February/2021
11. Guimarães, G. T., Missão espacial gaia: uma nova era da astronomia [Saia space mission: a new era of astronomy], Boletim Dia e Noite com as Estrelas, January/2021
12. Guimarães, G. T., Sondas espaciais retornam à terra [Space probes return to earth], Boletim Dia e Noite com as Estrelas, January/2021

Boletim Dia e Noite Com as Estrelas [“Day and Night With the Stars” Newsletter]