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LCDM, Modified Gravity or new Dark Matter models?

de à (Europe/Paris)
à Tour Zamansky ( Rooms 2307 and 2302 )
Campus Jussieu 4 Place Jussieu 75005 Paris

​This was an informal meeting on galaxy properties and how they relate to Dark Matter. The focus of the workshop was to learn more about the mass discrepancy-acceleration relation (MDAR) of galaxies, and whether this can be explained by vanilla Lambda-CDM, some new theory of Modified Gravity or perhaps new models of Dark Matter. 

It consisted of a number of lectures and seminars from experts across these related topics, aimed at an audience of people working in the field of Dark Matter, but not necessarily on these aspects. The lectures were pedagogical, aiming to provide an introduction to the MDAR and different possible explanations. Seminars covered more recent developments, with ample time set aside for discussions. The speakers were: Alejandro Benítez-Llambay, Celine Boehm, Arianna Di Cintio, Pavel Kroupa, Federico Lelli, Jakub Scholtz, Costas Skordis and Anca Tureanu. 

This was the fifth in a series of mini-workshops held in the context of the activities of the ERC Starting Grant project: 'NewDark: New Directions in Dark Matter Phenomenology at the TeV Scale'. Support from the ERC is acknowledged. Previous mini-workshops covered Dark Matter searches at colliders, numerical simulationsaxion theory and searches and Dark Matter and Stars.

Participation was by invitation only.


  • Mathieu Boudaud (boudaud at
  • Marco Cirelli (mcirelli at
  • Bradley Kavanagh (bkavanagh at
  • Filippo Sala (fsala at

The social dinner took place on Tuesday 30th May and was held at the Restaurant "Les Arts" in L'Hôtel des Arts & Métiers near Trocadéro.

Find below the full schedule, talk slides and a group photo of the mini-workshop participants:

Photo of mini-workshop participants

Participants Karim Benakli; Alejandro Benítez-Llambay; Mathieu Boudaud; Celine Bœhm; Yifan CHen; Marco CIRELLI; Arianna Di Cintio; Valerie Domcke; Maíra Dutra; Adam Falkowski; Benjamin Fuks; Silvia Galli; Mark Goodsell; ANDREAS GOUDELIS; Yann Gouttenoire; Julia Harz; Bradley Kavanagh; Pavel Kroupa; Federico Lelli; Bruno Machet; Yann Mambrini; Emmanuel Moulin; Ruben Oncala; Marta Perego; Kallia Petraki; Mathias Pierre; Diego Redigolo; Lucia Rinchiuso; Filippo Sala; Jakub Scholtz; Costas Skordis; Anca Tureanu; Filippo Vernizzi; Kenza Zeghari
Go to day
  • lundi 29 mai 2017
    • 14:30 - 18:15 Observations
      • 14:30 The radial acceleration relation of galaxies 1h30'
        Intervenant: Federico Lelli
        Documents: Slides pdf file
      • 16:00 Coffee Break 30'
      • 16:30 Constraints on the existence of particle dark matter from astronomical observations 1h15'
        Intervenant: Pavel Kroupa
        Documents: Slides pdf file
      • 17:45 Discussion Session 30'
  • mardi 30 mai 2017
    • 10:00 - 12:30 Simulations
      • 10:00 MDAR in the context of LCDM 45'
        Intervenant: Alejandro Benitez-Llambay
        Documents: Slides pdf file
      • 10:45 Coffee Break 30'
      • 11:15 LCDM and MDAR in the light of cusp-core transformation. Is there need for alternative DM models? 45'
        Intervenant: Arianna Di Cintio
        Documents: Slides pdf file
      • 12:00 Discussion Session 30'
    • 12:30 - 14:30 Lunch ( Tour 14 )
    • 14:30 - 18:00 Modified Gravity + Dark Matter
      • 14:30 The gravitational side of the Dark Matter problem 1h30'
        Intervenant: Costas Skordis
        Documents: Slides pdf file
      • 16:00 Coffee Break 30'
      • 16:30 Dark Matter Interactions 45'
        Intervenant: Celine Boehm
        Documents: Slides pdf file
      • 17:15 Discussion Session 45'
    • 18:00 - 18:30 Q&A Session
  • mercredi 31 mai 2017
    • 10:00 - 13:00 Modified Gravity + Dark Matter
      • 10:00 On the viability of Tensor–Vector–Scalar (TeVeS) gravity via Hamiltonian analysis 45'
        Intervenant: Anca Tureanu
        Documents: Slides pdf file
      • 10:45 The Cosmic Microwave Background and Dark Matter 30'
        Intervenant: Costas Skordis
        Documents: Slides pdf file
      • 11:15 Coffee Break 30'
      • 11:45 Dissipative Dark Matter: Introduction to Models and Expected Signals 45'
        Intervenant: Jakub Scholtz
        Documents: Slides pdf file
      • 12:30 Discussion Session 30'