LCDM, Modified Gravity or new Dark Matter models?

29 mai 2017, 13:00 → 31 mai 2017, 14:00 Europe/Paris

Rooms 2307 and 2302 (Tour Zamansky)

​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 simulations, axion theory and searches and Dark Matter and Stars.

Participation was by invitation only.

Organisers:

• Mathieu Boudaud (boudaud at lpthe.jussieu.fr)
• Marco Cirelli (mcirelli at lpthe.jussieu.fr)
• Bradley Kavanagh (bkavanagh at lpthe.jussieu.fr)
• Filippo Sala (fsala at lpthe.jussieu.fr)

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:

pictures IMG_4357.jpg

lun. 29 mai

14:30 → 18:15 Observations

14:30 The radial acceleration relation of galaxies

Lecture

Orateur: Federico Lelli

Slides Lelli_LPTHE.pdf

16:00 Coffee Break

16:30 Constraints on the existence of particle dark matter from astronomical observations

Seminar

Orateur: Pavel Kroupa

Slides Kroupa_Paris_DM_halos.pdf

17:45 Discussion Session

mar. 30 mai

10:00 → 12:30 Simulations

10:00 MDAR in the context of LCDM

Seminar

Orateur: Alejandro Benitez-Llambay

Slides BENITEZLLAMBAY-MDAR.pdf

10:45 Coffee Break

11:15 LCDM and MDAR in the light of cusp-core transformation. Is there need for alternative DM models?

Seminar

Orateur: Arianna Di Cintio

Slides PARIS_2017_light.pdf

12:00 Discussion Session

12:30 → 14:30 Lunch

14:30 → 18:00 Modified Gravity + Dark Matter

14:30 The gravitational side of the Dark Matter problem

Lecture

Orateur: Costas Skordis

Slides Mod_Grav_Paris_2017.pdf

16:00 Coffee Break

16:30 Dark Matter Interactions

Seminar

Orateur: Celine Boehm

Slides CBOEHM_Mini_Workshop_Paris_May2017.pdf

17:15 Discussion Session

18:00 → 18:30 Q&A Session

18:00 Q&A

Slides Q&A.pdf

mer. 31 mai

10:00 → 13:00 Modified Gravity + Dark Matter

10:00 On the viability of Tensor–Vector–Scalar (TeVeS) gravity via Hamiltonian analysis

Seminar

Orateur: Anca Tureanu

Slides Tureanu_TeVeS_Hamiltonian.pdf

10:45 The Cosmic Microwave Background and Dark Matter

Seminar

Orateur: Costas Skordis

Slides CMB_and_Dark_Matter_Paris_2017.pdf

11:15 Coffee Break

11:45 Dissipative Dark Matter: Introduction to Models and Expected Signals

Seminar

Orateur: Jakub Scholtz

Slides JS_DDM.pdf

12:30 Discussion Session