Automated Detection and Modeling of Binary Microlensing Events in OGLE-IV data. I. Events with Well-Separated Bumps
Oliveira, Poleski, Mróz et al., 2025, AcA, 75, 27
Education and Research Experience
- 2023 – present: Postdoctoral Researcher, with Prof. Radek Poleski
- 2019 – 2023: Ph.D. in Astronomy – Universidade de São Paulo (IAG/USP), funded by FAPESP
- 2017 – 2019: M.Sc. in Astronomy – IAG/USP, funded by CAPES
- 2013 – 2016: B.Sc. in Physics/Astrophysics – Universidade Federal do Rio Grande do Sul (UFRGS)
My current position involves studying binary stars in the Milky Way bulge using gravitational microlensing, which occurs when a foreground object passes at a close angle to a background star, causing a temporary magnification. Scanning 400 million OGLE-IV light curves, we aim to detect binary-lens and binary-source events, in order to constrain the bulge initial mass function from binary stars.
Recently, we published Oliveira et al. (2025, AcA) with an initial sample of 107 binary microlensing events with well-separated bumps, including model fitting with MulensModel.
Research interests: gravitational microlensing, star clusters, statistical methods, and stellar populations. My other first-author papers analyse star clusters in the Magellanic Bridge with VISCACHA data (2023), distances to bulge globular clusters from RR Lyrae stars (2022), multiple populations in bulge globular clusters (2020), and new embedded clusters in the Carina complex (2018). Member of the VISCACHA survey, Rubin Observatory - Brazilian Participation Group, MOSAIC-ELT instrumentation group, VISCACHA-DELVE joint project (Leader), and Roman Science Collaboration.
Recent publications
The VISCACHA survey: XIV. Chemical evolution history of the SMC: The Southern Bridge Clusters
Saroon, Dias, Tsujimoto et al., 2025, A&A, 701, 222
Recent talks
- Contributed talk: LSST@Europe 7, Poznań, 2025
- Poster: 42nd Meeting of the Polish Astronomical Society, Warsaw, 2025 (honorable mention)
- Contributed talk: VI VISCACHA Meeting, Rio de Janeiro, 2025
- Contributed talk: XMC II: Clouds over Yellowstone, Bozeman, 2025
- Contributed talk: 27th Microlensing Conference, Cape Town, 2025
- Outreach talk: "Astronomia ao Meio-dia: Medindo a função de massa inicial do Bojo com microlentes gravitacionais", IAG-USP, 2024 (available on YouTube)
- Invited talk: "Tuesday seminar: Star clusters as valuable tracers of their host galaxy", Astronomical Observatory - University of Warsaw, 2024 (available on YouTube)