News from the Dark 4

Europe/Paris
Faculty of Science - room 10.01 (University of Montpellier)

Faculty of Science - room 10.01

University of Montpellier

Place Eugène Bataillon 34095 Montpellier Cedex 05
Description

This mini-workshop is aimed at gathering a few experts from different fields (mostly theoretical cosmology, Galactic dynamics, [astro]particle physics) to discuss current progress, issues, and prospects in the understanding of dark matter (DM). The focus is mostly on how different DM scenarios imprint subgalactic scales, and how these can in turn be used to discriminate among several classes of DM candidates. This is directly linked to the small-scale tensions the LCDM paradigm is currently facing, which could be related either to baryonic physics, specific dark matter properties, or both.

The number of (invited) participants is limited to ~20-30, and the philosophy may be summarized as: interactive, friendly, unveil the dust under the carpet(s), share knowledge or ideas,  trigger collaborative works. This is the fourth edition of this workshop series (previous editions: 2013, 2017, 2018).

The meeting will take place at the campus of the Faculty of Sciences of the University of Montpellier, in amphitheatre 10.01 (build. n°10) on Monday and Tuesday, and in amphitheatre 12.01 (build. n°12) on Wednesday - please check the campus map at this link. We will have lunch in the garden in front of the meeting room.

The main entrance of the Faculty is located Rue du Truel (no longer Place Eugène Bataillon), which you can reach by tram from the city center (tram line 1, the blue one, stop "Saint Eloi" or the next one, "Universités des Sciences et des Lettres") .

From downtown (where the railway station, or Place de la Comédie, are located), take this tram line (1, with the white swallows) toward "Mosson". To go back downtown, take the same line toward "Odysseum".
NB: you will have to purchase your tickets before boarding the tram (ticket machines at each stop).

This meeting is funded by the CNRS-IN2P3 Theory Project "Galactic Dark Matter" (PI J. Lavalle), by the CNRS-INSU National Programs PNHE and PNCG, and by the ANR under contract ANR-18-CE31-0006 (GaDaMa project).

Scientific organizers: B. Famaey, J. Lavalle.

Local organizers: G. Facchinetti, J. Lavalle, V. Poulin, M. Stref + A. Chenouf, C. Mercier.

Participants will include:

James Binney (U. Oxford), Kimberly Boddy (JHU), Mathieu Boudaud (LPTHE), Rodrigo Calderon (L2C), Sébastien Clesse (UC Louvain), Rupert Coy (L2C), Sacha Davidson (LUPM), Raphaël Errani (Edinburgh), Gaétan Facchinetti (LUPM), Benoit Famaey (Strasbourg), Jean-Baptiste Fouvry (IAS Princeton), Karsten Jedamzik (LUPM), Thomas Lacroix (IFT Madrid), Chervin Laporte (Victoria), Julien Lavalle (LUPM), Laura Lopez Honorez (ULB Brussels), Giacomo Monari (Potsdam), Riccardo Murgia (SISSA), Emmanuel Nezri (LAM), Arturo Nunez (LAM), Mihal Petac (SISSA), Annalisa Pillepich (MPIA Heidelberg), Vivian Poulin (LUPM), Yuxiang Qin (SNS Pisa), Simon Rozier (IAP), Pierre Salati (LAPTh), Tristan Smith (Swarthmore), Martin Stref (LUPM), and several MSc students.

    • 09:00 10:00
      Welcome coffee 1h
    • 10:00 10:15
      Welcome address and short introduction 15m
      Orateur: Dr Julien Lavalle (LUPM)
    • 10:15 11:15
      Some highlights from Gaia 1h
      Orateur: Dr Benoit Famaey (Obs. Astr. Strasbourg)
    • 11:15 12:15
      The long Galactic bar 1h
      Orateur: Dr Giacomo Monari (AIP Potsdam)
    • 12:15 13:15
      Lunch break and discussion 1h
    • 13:15 14:15
      Galactic dynamics in the Gaia era 1h
      Orateur: Prof. James Binney (U. Oxford)
    • 14:15 15:05
      Mapping the stability of rotating halos through linear response theory 50m
      Orateur: M. Simon Rozier (IAP)
    • 15:05 16:00
      Minimal consistent dark matter phase-space distribution function confronted to simulations 55m
      Orateur: Dr Thomas Lacroix (IFT Madrid)
    • 16:00 16:40
      Coffee break and discussion 40m
    • 16:40 17:35
      Axisymmetric phase-space distribution functions for dark matter halos 55m
      Orateur: M. Mihal Petac (SISSA)
    • 17:35 18:30
      The Gaia phase-space spiral 55m
      Orateur: Dr Chervin Laporte (videocon) (Victoria)
    • 09:00 10:00
      Status of cosmological simulations - dark matter and baryons 1h
      Orateur: Dr Annalisa Pillepich (MPIA Heidelberg)
    • 10:00 10:30
      Coffee break and discussion 30m
    • 10:30 10:45
      Star formation in cosmological simulations 15m
      Orateur: M. Arturo Nunez (LAM)
    • 10:45 11:30
      Subhalos in the Galaxy 45m
      Orateur: Dr Martin Stref (LUPM)
    • 11:30 12:15
      Subhalos: the connection with simplified particle dark matter models 45m
      Orateur: M. Gaétan Facchinetti (LUPM)
    • 12:15 13:15
      Lunch break and discussion 1h
    • 13:15 14:05
      Tidal stripping of dark matter subhalos 50m
      Orateur: M. Raphaël Errani (U. Edinburgh)
    • 14:05 14:55
      Looking for fuzzy dark matter in the Milky Way 50m
      Orateur: Dr Jean-Baptiste Fouvry (IAS Princeton)
    • 14:55 15:45
      Self-interacting dark matter halos 50m
      Orateur: Dr Kimberly Boddy (JHU)
    • 15:45 16:30
      Coffee break and discussion 45m
    • 16:30 17:20
      Lyman-alpha constraints on dark matter 50m
      Orateur: M. Riccardo Murgia (SISSA)
    • 17:20 18:10
      Looking for dark matter in the 21 cm sky 50m
      Orateur: Dr Laura Lopez Honorez (ULB Brussels)
    • 20:30 22:30
      Dinner downtown 2h
    • 09:00 10:00
      21 cm cosmology and the first stars 1h
      Orateur: Dr Yuxiang Qin (SNS Pisa)
    • 10:00 10:30
      Coffee break 30m
    • 10:30 11:20
      Primordial black holes: A common origin for baryons and dark matter 50m
      Orateur: Dr Sébastien Clesse (UC Louvain)
    • 11:20 12:10
      Cosmological aspects of scalar fields 50m
      Orateur: Dr Smith Tristan (Swarthmore Colleage)
    • 12:10 12:25
      Summary 15m
      Orateur: Dr Julien Lavalle (LUPM)
    • 12:25 13:20
      Lunch break 55m
    • 13:20 15:00
      Open discussion on selected topics 1h 40m
      Orateur: All interested participants