Cosmological Simula-ons Science Working Group for Euclid

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1 Cosmological Simula-ons Science Working Group for Euclid Pablo Fosalba Romain Teyssier 70 members in the mailing list Regular telecons ITN project ECOSIM submitted 1

2 Science Requirements on Simulations Internal doc produced (ECSRD) in June 2011 with requirements from WL, GC, Clusters and Theory WG inputs Translation of SciRD into requirements on simulations to achieve Euclid science goals. CSWG replied in July with 2 docs, addressing basic requirements: P(k) accuracy from N-body simulations < 1% Impact of baryonic physics on the PS < 10% understood < 1% Theory WG defined 8 classes of non-standard (and viable) cosmological models to be implemented in N-body algorithms 2

3 Cosmological simulations: task list 1. Development of large simula-ons & access to HPC facili-es [V.Springel] 2. Lightcone data format & ray- tracing tools [S.Colombi,S.Hilbert] 3. Halo/sub- halo, mass func-on, merger- trees [A.Knebe] 4. Database of simula-on products 5. Covariance es-ma-on of observables [A.Kiessling] 6. Tools for non- standard models [M.Baldi,K.Koyama] 7. Beyond 1% accuracy in dark- maver sta-s-cs [R.Smith,P.Fosalba] 8. Impact of baryons [R.Teyssier,K.Dolag,J.Schaye] 9. Genera-on of galaxy catalogs [C.Baugh,F.Castander] 10. Simula-on output comparison/valida-on [F.Pearce] 3

4 Cosmological N body simulations Euclid resolution: particle mass = 0.1 billion solar masses 26 4

5 Simulations beyond LCDM 5

6 Simulations beyond LCDM Maccio et al. 2012, Schneider et al

7 Simulations beyond LCDM 7

8 0.8 RAMSES with f(r) modified gravity P(k)/P LCDM (k) f R = 10-4 f R = 10-5 f R = k (hmpc -1 ) Baojiu Li et al

9 Beyond 1% accuracy for numerical models? Reed et al

10 The impact of baryons on the matter power spectrum Guillet et al Semboloni et al

11 The impact of baryons on the matter power spectrum Adding baryons parameters to the model will reduce the bias without degrading error bars. Semboloni et al Guillet et al

12 Cosmological simulations workflow Code validation and comparison High-res N body (GADGET, RAMSES, P3M, PKDGRAV) resolutions: 256, 512, 1024, 2048, 4096, 8192 same particle mass Modified gravity and/or exotic dark matter models A halo model for baryonic effects Halo and sub-halo catalogues Merger trees, light cones A halo model for non-standard models Ray-tracing for weak lensing Simulations of galaxies Simulations of galaxy clusters Mock galaxy catalogues using SAM and HOD Database Euclid community Interface with OU SIM Barcelona 9/11 July

13 Cosmological Simulations Science Working Group Jean-Michel Alimi Amendola Luca Antonuccio- Delogu Vincenzo Baldi Marco Basse Tobias Carlton Baugh Benabed Karim Bjælde Ole Eggers Borgani Stefano Bouillot Vincent Branchini Enzo Busha Michael Casarini Luciano Castander Francisco Stephane Colombi Corasaniti Pier-Stefano Crocce Martin Da Silva Antonio De Lucia Gabriella Klaus Dolag Durier Fabrice Ealet Anne Elgaroy Oysten Fernandes Rui Pablo Fosalba Hannestad Steen Hilbert Stefan Iliev llian Izard Alberich Albert Jenkins Adrian Jennings Elise Johansson Peter H. Jouvel Stephanie Kiessling Alina Kitching Tom Knebe Alexander Koyama Kazuya Li Baojiu < b a o j i u. l d u r h a m. a c. u k >, L l i n a r e s C l a u d i o < c l a u d i o. l l i n a r e a s t r o. u i o. n o >, N o r b e r g P e d e r <[email protected]>, Mellier Yannick <[email protected]>, Merson Alex <[email protected]>, Monaco Pierluigi <[email protected]>, Mota David <[email protected]>, Oliveira David <[email protected]>, Peacock John <[email protected]>, Frazer Pearce <[email protected]>, Peirani Sebastien <[email protected]>, Prunet Simon <[email protected]>, Yann Rasera <[email protected]>, Read Justin <[email protected]>, Reed Darren <[email protected]>, Reverdy Vincent <[email protected]>, Joop Schaye <[email protected]>, Schneider Michael <[email protected]>, Sefusatti Emiliano <[email protected]>, Seljak Uros <[email protected]>, Serrano Santiago <[email protected]>, Smith Robert <[email protected]>, Springel Volker <[email protected]>, Joachim Stadel <[email protected]>, Teyssier Romain <[email protected]>, Thomas Peter <[email protected]>, Viel Matteo <[email protected]>, Yepes Gustavo <[email protected]>, Zhao Gongbo <[email protected]> 13