As survey astronomer, my research is focussing on astronomical and data science (systems) topics that exploit large-scale surveys:

  • Detection of rare objects: high-redshift quasars, strong gravitational lenses, galaxy mergers etcetera. I am involved in such projects using the Kilo-Degree Survey and are preparing for the Euclid Mission
    • “DenseLens – Using DenseNet Ensembles and Information Criteria for finding and rank-ordering Strong Gravitational Lenses”, Bharath Chowdhary Nagam et al., 2022, MNRAS, submitted
  • Serendipitous harvests: asteroids and comets in extragalactic surveys. This combines my interest in data-intensive astronomy with my interest in the long-term future of the habitability of Earth. I focus on improving our knowledge of the orbits and compositions of near-earth asteroids & comets. To avoid a rock “hitting the windshield of our spaceship Earth”.
    • “Mining archival data from wide-field astronomical surveys in search of Near-Earth Objects”, Saifollahi et al., 2022, in preparation
  • photometric calibration at the signal-to-noise limit over large areas: low-surface brightness galaxies
  • High-precision relative and absolute astrometry: proper motions of stars, asteroids and comets. Again related to my interest in the long-term future of the habitability of Earth
    • “Stellar encounters and climate change”, MSc thesis Oscar Stolk, 2023, in preparation
  • data science systems: extreme data lineage for quality assessment of large complex data sets
    • “MuseWise – Data Management of MUSE GTO data”, MUSE GTO consortium et al., 2023, in preparation

See the SAO/NASA Astrophysics Data System (ADS) for a full listing of papers.

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