2025 Fink Collaboration Meeting

Session

Science

17 juil. 2025, 09:00

Hotel Littéraire Alexandre Vialatte

1. Early identification of optical tidal disruption events with the Fink broker

Sergey Karpov (Institute of Physics, Czech Academy of Sciences)

17/07/2025 09:00

Detecting Tidal Disruption Events (TDEs) candidates early is essential for follow-up observations at peak brightness, enabling confirmation of their nature and a deeper understanding of their complex multi-wavelength behavior. TDEs are rare events, and their detection is one of the key goals of large ground optical facilities, such as the Zwicky Transient Facility (ZTF) and the upcoming Vera...

5. Hostless transients detection in Fink

M. Rupesh Durgesh (COIN)

17/07/2025 09:30

Hostless transients refer to transients for which we cannot find an associated host galaxy. This could happen for the following possible reasons: 1. Mostly due to the limitations of telescopes, we are unable to detect the associated host; 2. In very rare cases, supernovae have escaped their hosts due to dynamical ejection, tidal stripping or other astrophysical phenomena. Such candidates are...

11. Discussion: Extra-galactic science

17/07/2025 10:00

4. Finding magnetic cataclysmic variable stars with Fink

Clement MUR

17/07/2025 11:00

Magnetic cataclysmic variable stars are rare close binary systems in which matter from a main sequence star accretes on a strongly magnetized white dwarf. This presentation will introduce the characteristics of these objects and show the development of a module within Fink designed to find magnetic cataclysmic variable stars in the Zwicky Transient Facility alert stream, in collaboration with...

3. Search for hidden baryons through interstellar scintillation

marc moniez (LAL-IN2P3)

17/07/2025 11:30

Cool molecular hydrogen H2 may be the ultimate possible constituent to the Milky-Way baryonic hidden matter. I will describe a new way to search for such transparent matter in the Galactic discs and halo, through its diffractive and refractive effects on the light of background stars. The light of a background star can be subject to stochastic fluctuations on the order of a few percent at a...

13. Discussion: Galactic science

17/07/2025 12:00

14. What will you do and what do you need for 1st alerts?

17/07/2025 13:30

What will you do and what do you need for 1st alerts?

15. Brainstorming on classification

17/07/2025 15:30

Defining what classification means in Fink, and its impact