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    NOVA Network 3 Meeting

    21 November 2025
    Radboud
    Europe/Amsterdam timezone

    Contribution List

    24 out of 24 displayed
    1. 11. Welcome
      Katie Mulrey (Radboud), Philipp Moestra
      21/11/2025, 10:15
    2. 14. XRISM spectroscopy map accretion flow with Fe Kα emission lines
      Chen Li
      21/11/2025, 10:20
    3. 13. NEBULA-Xplorer: an X-ray timing mission for X-ray binaries
      Benjamine Ricketts
      21/11/2025, 10:40
    4. 12. Launching of an ultrafast outflow triggered by a soft X-ray burst in NGC 3783
      Liyi Gu
      21/11/2025, 11:00
    5. 15. Probing accretion disk plasmas in LMXBs with XRISM
      Eleonora Caruso
      21/11/2025, 11:20
    6. 16. Mapping neutron stars with pulse profile modelling
      Anna Watts
      21/11/2025, 11:40
    7. 17. Sampling diverse accreting neutron star jet behaviors with radio observations
      Eliot Pattie
      21/11/2025, 13:00
    8. 18. VAPOLA mm survey of AGN and SgrA* with ALMA
      Douglas Carlos
      21/11/2025, 13:20
    9. 19. Recovering the Fundamental Plane of Black Hole Activity using GRMHD simulations
      Renze Oosterhuis
      21/11/2025, 13:40
    10. 20. Resolving white dwarf binaries within globular clusters with LISA
      Wouter van Zeist
      21/11/2025, 14:00
    11. 21. The FOSSIL mission
      Lorenza Ferrari
      21/11/2025, 14:20
    12. 22. Machine Learning for Variability Classification and Pulsation Mode Identification in Hot Subluminous Stars
      Tahina Princy Ranaivomanana
      21/11/2025, 15:00
    13. 23. Strengthening Multi-messenger synergies: The Astrophysics Centre for Multi-messenger studies in Europe (ACME)
      Zsolt Paragi
      21/11/2025, 15:20
    14. 24. Discussion
      21/11/2025, 15:40
    15. 1. Launching of an ultrafast outflow triggered by a soft X-ray burst in NGC 3783
      Liyi Gu (SRON)

      In this talk I will report an exciting discovery from the 2024 X-ray/UV campaign on NGC 3783 led by XRISM: a transient ultra‑fast outflow (UFO) detected with the Resolve instrument, reaching 0.19c and occurring in tight temporal coincidence with the rapid decay of a powerful soft X‑ray/UV flare. The absorption line points to a compact, high‑ionization absorber and suggest a violent ejection...

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    16. 9. Machine Learning for Variability Classification and Pulsation Mode Identification in Hot Subluminous Stars
      Tahina Princy Ranaivomanana

      The rapid progress in astronomical observation technologies has led to an enormous increase in light-curve data, bringing both exciting scientific opportunities and major challenges for time-domain astronomy. Traditional analysis techniques often fall short of fully exploiting the scientific potential of these large and increasingly complex datasets. As a result, machine learning algorithms...

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    17. 3. NEBULA-Xplorer: an X-ray timing mission for X-ray binaries
      Benjamin Ricketts (SRON)

      NEBULA-Xplorer is a new mission concept led by SRON that was approved to advance to the next stage in the recent exploratory mini-Fast ESA call. NEBULA-Xplorer is a small satellite mission that focuses on performing long continuous monitoring of X-ray binaries with modern silicon drift detectors, similar to those of the NICER instrument on the ISS. During mission development, we are...

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    18. 10. Probing accretion disk plasmas in LMXBs with XRISM
      Eleonora Caruso (API/SRON)

      Low mass X-ray binaries (LMXBs) are systems composed of a compact object (black hole or neutron star) and a low mass (< mSun) companion star. The compact object accretes matter from the companion, forming an accretion disk. The gas in the disk is ionized by the strong X-ray emission from the inner disk region, leading to the appearance of photoionized plasmas. Characterizing their properties...

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    19. 6. Recovering the Fundamental Plane of Black Hole Activity using GRMHD simulations
      Renze Oosterhuis (Radboud University Nijmegen)

      Accreting black holes span a wide range of physical regimes across the full mass scale, from stellar-mass X-ray binaries to supermassive active galactic nuclei. Different theoretical approaches are often used to describe each regime. Within the ERC-funded project BlackHollisitic, our long-term goal is to bridge these approaches to create unified models that describe black hole accretion across...

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    20. 8. Resolving white dwarf binaries within globular clusters with LISA
      Wouter van Zeist (Radboud University)

      It is currently uncertain how many white dwarf (WD) binaries LISA will be able to detect in the globular clusters (GCs) around the Milky Way, with predictions ranging from zero to dozens. However, there is another question: if there is a WD binary in a GC, would LISA actually be able to resolve it well enough in terms of sky location and distance that the binary could be distinguished from...

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    21. 4. Sampling diverse accreting neutron star jet behaviors with radio observations
      Eliot Pattie (University of Amsterdam)

      Accreting black holes and neutron stars, known as X-ray binaries, create very complex environments. One of the components of these X-ray binaries are relativistic jets, which still have many open questions regarding, e.g., their formation mechanism and what properties of the X-ray binary drive their behavior. Neutron star jets are even less understood than those of black holes primarily due to...

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    22. 2. Strengthening Multi-messenger synergies: The Astrophysics Centre for Multi-messenger studies in Europe (ACME)
      Zsolt Paragi (Joint Institute for VLBI ERIC)

      I will introduce the EC-funded ACME project which aims to strengthen synergies between multi-messenger facilities and to bring together scientists from various domains to advance the field. Within the project we are launching a virtual network of Centres of Expertise which will provide access to advanced multi-messenger data analysis methods and tools, along with comprehensive end-to-end...

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    23. 5. VAPOLA mm survey of AGN and SgrA* with ALMA
      Douglas Carlos (Universidade de São Paulo)

      We present an analysis of the spectropolarimetric properties of a sample of AGN and Sgr A*, observed with the Atacama Large Millimeter/ submillimeter Array (ALMA) over five VLBI campaigns conducted between 2017 and 2023. We perform a comprehensive characterization of the compact cores in total and polarized intensity, investigating trends in the linear polarization fraction (LP), the electric...

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    24. 7. XRISM spectroscopy map accretion flow with Fe Kα emission lines
      Chen Li

      Using XRISM/Resolve 439 ks time-averaged spectra of the well-known Seyfert-1.5 active galactic nucleus (AGN) in NGC 3783, we investigate the nature of the Fe Kα emission line at 6.4 keV, the strongest and most common X-ray line observed in AGN. Even the narrow component of the line is resolved with evident Fe Kα1 (6.404 keV) and Kα2 (6.391 keV) contributions in a 2:1 flux ratio, fully...

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