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Summary of GT3: « Neutrinos in the Universe » Participants: Dominique Boutigny Dominique Duchesneau José Busto Paschal Coyle Sacha Davidson Philippe Gorodetzky.

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Presentation on theme: "Summary of GT3: « Neutrinos in the Universe » Participants: Dominique Boutigny Dominique Duchesneau José Busto Paschal Coyle Sacha Davidson Philippe Gorodetzky."— Presentation transcript:

1 Summary of GT3: « Neutrinos in the Universe » Participants: Dominique Boutigny Dominique Duchesneau José Busto Paschal Coyle Sacha Davidson Philippe Gorodetzky Christophe Grojean Stavros Katsanevas Sylvaine Turck-chieze Lawrence R. Sulak Julien Lesguorgues Thomas Patzak Thierry Pradier Laurent Simard Anne Stutz Francois Vannucci Jean Orloff Dy-Holm Koang Grabrielle Lelaizant high energy  (20) high energy  cosmological solar cosmological SNII supernovae high energy  cosm. high energy  Coordinators: Cristina Volpe, Alain de Bellefon

2 Summary of GT3: « Neutrinos in the Universe » Objectives: To propose general pedagogical talks on topics of particular interest for the Neutrino community. To contribute to documents (Letter of Interest, White papers) or to discuss future projects To develop tools of common interest Meetings of GT3: juin, Orsay septembre, Lyon J. Lesgourgues, « Neutrinos and cosmological perturbations » A.Coc, «Big-Bang Nucleosynthesis, light element abundances and CMB anisotropies» J. Busto, «HE neutrinos» A. De Bellefon NNN05 White book J. Busto HE neutrinos: review of the sources and tests of models

3 Modèle cosmologique spectre des anisotropies du CMB (température, polarisation) OBSERVATIONS (CMB, galaxy surveys, Ly- , weak lensing) spectre de puissance lineaire de la matière

4 Limites actuelles  pour scénario minimal à 3- : modèle à 7 paramètres Σm ν (eV) at 95%CL données utilisées SDSS Coll. PRD 69 (2004) < 1.8 WMAP, SDSS Hannestad JCAP 0305 (2003) 004 < 1.01 WMAP, other CMB, 2dF, HST Crotty, JL & Pastor PRD 69 (2004) < 0.6 WMAP, other CMB, 2dF, SDSS, HST WMAP Coll. ApJ Suppl 148 (2003) 17 < 0.7 WMAP, other CMB, 2dF, HST + biais Seljak et al. astro-ph/ < 0.42 WMAP, SDSS + biais, Ly-α from SDSS

5 Perspectives maintenant Planck + completed SDSS future CMB + weak lensing

6 Comparison between observed and calculated abundances Limits (1-  ) obtained by Monte-Carlo from DAACV reaction rate uncertainties. Primordial abundances 4 He : Y p =0.2421± [Izotov et al. (2003)]

7 Influence de la vitesse d’expansion Variation des abondances lorsque le nombre effectif de familles de « neutrinos » varie. Effet sur le taux d’expansion

8 Summary of GT3: « Neutrinos in the Universe » Objectives: To propose general pedagogical talks on topics of particular interest for the Neutrino community. To contribute to documents (Letter of Interest, White papers) or to discuss future projects To develop tools of common interest Meetings of GT3: J. Lesgourgues, « Neutrinos and cosmological perturbations » A.Coc, «Big-Bang Nucleosynthesis, light element abundances and CMB anisotropies» J. Busto, «HE neutrinos» A. De Bellefon NNN05 White book J. Busto HE neutrinos: review of the sources and tests of models

9 GT3: Next meeting A general talk on our understanding of the magnetic fields in the sun The status on the neutrino magnetic moment from solar studies Future solar projects Solar neutrinos? HE neutrinos? SNII SNII neutrinos?


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