Ecole Internationale d'Astrophysique Daniel Chalonge
Meeting Title: Chalonge Meudon Workshop 2012 "Warm Dark Matter Galaxy Formation in Agreement with Observations"
Support to the James Webb Space Telescope
Location: Meudon Castle-CIAS, Observatoire de Paris at Meudon, France
Dates: 6, 7 and 8 June 2012
A Turning Point operated recently in the Dark Matter research: Warm
Dark Matter (WDM) emerged impressively over Cold Dark Matter (CDM)
as the leading Dark Matter candidate. WDM solves naturally the problems
of CDM and agrees with the observations at small as well as large and
cosmological scales. This workshop addresses WDM putting together
astrophysical, cosmological and particle WDM, astronomical observations,
theory and WDM numerical simulations which naturally reproduce the
observations at all the scales. The Workshop addresses as well the
experimental search for the WDM particle candidates (keV sterile
2. The New Dark Matter Situation Today:
Warm Dark Matter (WDM) research is progressing fast, the subject is new
and WDM essentially works, naturally reproducing the astronomical
observations over all scales: small (galactic) and large (cosmological)
scales (LambdaWDM). Astronomical evidence that Cold Dark Matter
(LambdaCDM) and its proposed tailored cures do not work at small
scales is staggering. Astrophysical constraints including Lyman alpha
bounds put the sterile neutrino mass m in the range 1< m <13 keV. WDM
predictions for EUCLID and PLANCK start to to be available. MARE and an
adapted KATRIN experiment could detect a keV sterile neutrino. It will be
a fantastic discovery to detect dark matter in a beta decay. A formidable
WDM work to perform is ahead of us.
3. History, Context and the CDM crisis (abridged) :
Cusped profiles and overabundance of substructures are predicted by
CDM. Too many satellites are predicted by CDM simulations while cored
profiles and no such overabundant substructures are seen by
astronomical observations. After more than twenty years, all dedicated
CDM particle searches (Wimps) have failed and all dedicated CDM
simulations do not agree with observations at the galaxy and small
scales. Read more on the www of this Workshop.
4. This Workshop
This Workshop addresses the last progresses made in Warm Dark
Matter and the Universal and Non Universal properties of Galaxies.
In the tradition of the Chalonge School, an effort of clarification and
synthesis will be made by combining in a conceptual framework, theory,
analytical, observational and numerical simulation results that reproduce
The subject will be approached in a threefold way:
(I) Conceptual context . The new serious dark matter candidate: keV
(II) Astronomical observations linked to the galaxy structural properties,
surveys, clusters and to structure formation at different (large and small
(III) WDM Numerical simulations which reproduce observations at large
and small (galactic) scales.
Sessions last for three full days in the beautiful green Meudon campus of
Observatoire de Paris, where CIAS "Centre International d´Ateliers
Scientifiques" is located. All sessions take place in the historic Château
building, (built in 1706 by great architect Jules-Hardouin Mansart in
orders by King Louis XIV for his son the Grand Dauphin).
The Meeting is open to all scientists interested in the subject. The format
of the Meeting is intended to allow easy and fruitful mutual contact and
Informations about the Workshop, participation information and
background information are displayed at
Early Registration is strongly encouraged.
Looking forward to Welcome you at Meudon,
With compliments and kind regards,
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Chalonge Meudon Workshop 2012 "Warm Dark Matter Galaxy Formation in Agreement with Observations"
See also CADC list.
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