1. Haloes going MAD Alexander Knebe Universidad Autonoma de Madrid

2. Haloes going MAD Eyjafjallajökull brings Europe to a stand-still…

3. Haloes going MAD Outline  why?  what?  how?

4. Haloes going MAD Outline  why?  what?  how?

5. Haloes going MAD Why? Millenium Simulation Density Field

6. Haloes going MAD Why? Millenium Simulation Density Field where are the haloes?

7. Haloes going MAD  our beloved CDM model induces hierarchical structure formation! Why? “GHALO” (a multibillion particle CDM halo) Stadel et al. (2009)

8. Haloes going MAD  our beloved CDM model induces hierarchical structure formation! Why? “GHALO” (a multibillion particle CDM halo) demanding task of identifying haloes within haloes within… Stadel et al. (2009)

9. Haloes going MAD  halo finders...... map simulations (reliably!) onto observables... need to acknowledge hierarchical structures Why?

10. Haloes going MAD  halo finders...... map simulations (reliably!) onto observables... need to acknowledge hierarchical structures Why? state-of-the-art cosmological simulations require state-of-the-art halo finder! …that’s Why !

11. Haloes going MAD Outline  why?  what?  how?

12. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) mock haloes

13. Haloes going MAD  the data What? large-scale structure simulation MareNostrum Universe   CDM cosmology  high-resolution simulation

14. Haloes going MAD  the data What? large-scale structure simulation MareNostrum Universe   CDM cosmology  high-resolution simulation FullBox_z0.0_0256 N p =2x 256 3 FullBox_z1.0_0256 N p =2x 256 3 FullBox_z0.0_0512 N p =2x 512 3 FullBox_z0.0_1024 N p =2x 1024 3

15. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) www.clues-project.org  WMAP3 cosmology  high-resolution zoom

16. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) www.clues-project.org  WMAP3 cosmology  high-resolution simulation LocalGroup_z0.0_2048 LocalGroup_z0.0_4096 LocalGroup_z1.5_4096 LocalGroup_z9.7_4096 [0]gas particles [1]hi-res DM particles [2]low-res DM particles [3]lower-res DM particles [4]star particles [5]lowest-res DM particles

17. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) www.clues-project.org  WMAP3 cosmology  GHALO 3 Stadel et al. (2009) ghalo

18. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) www.clues-project.org  WMAP3 cosmology  GHALO 3 Stadel et al. (2009) ghalo-3.00400.std TIPSY format ghalo

19. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) mock haloes

20. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) mock haloes ghalo www.clues-project.org MareNostrum Universe

21. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) mock haloes ghalo www.clues-project.org MareNostrum Universe enough data to poke a stick at…

22. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) mock haloes  what “what”?

23. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) mock haloes  what “what”? ?

24. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) mock haloes  what “what”? ? ?

25. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) mock haloes  what “what”? ? ? and what about subhaloes?

26. Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s) mock haloes  what “what”? ? ? monday afternoo n discussi on

27. Haloes going MAD Outline  why?  what?  how?

28. Haloes going MAD  halo finder representatives: How? Miguel Aragon Calvo“Delaunay finder” Daniel CeverinoBDM Stefan GottloeberFOF Francesca IannuziSUBFIND Steffen KnollmannAHF Zarija Lukic“LANL halo finder” Michal MaciejewskiHSF Mark NeyrinckVOBOZ Susana PlanellesASOHF Doug PotterSKID Greg Stinsonntrpy-FOF Paul Matthew SutterpSO Dylan TweedAdaptaHOP Marcel Zemp6dFOF

29. Haloes going MAD  halo finder representatives: How? Miguel Aragon Calvo“Delaunay finder” Daniel CeverinoBDM Stefan GottloeberFOF Francesca IannuziSUBFIND Steffen KnollmannAHF Zarija Lukic“LANL halo finder” Michal MaciejewskiHSF Mark NeyrinckVOBOZ Susana PlanellesASOHF Doug PotterSKID Greg Stinsonntrpy-FOF Paul Matthew SutterpSO Dylan TweedAdaptaHOP Marcel Zemp6dFOF more halo finders than you could wish for…

30. Haloes going MAD  halo finder representatives: How? Miguel Aragon Calvo“Delaunay finder” Daniel CeverinoBDM Stefan GottloeberFOF Francesca IannuziSUBFIND Steffen KnollmannAHF Zarija Lukic“LANL halo finder” Michal MaciejewskiHSF Mark NeyrinckVOBOZ Susana PlanellesASOHF Doug PotterSKID Greg Stinsonntrpy-FOF Paul Matthew SutterpSO Dylan TweedAdaptaHOP Marcel Zemp6dFOF more halo finders than you could wish for… CODE COMPARISON PROJECT!

31. Haloes going MAD  code comparison project: How? unique definition for mass and size mock haloes: recovering mass and size under controlled conditions cosmological volume: mass positionstatistically! velocity zoom simulations: haloes within haloes within haloes…

32. Haloes going MAD  code comparison project: How? unique definition for mass and size mock haloes: recovering mass and size under controlled conditions cosmological volume: mass positionstatistically! velocity zoom simulations: haloes within haloes within haloes…

33. Haloes going MAD  code comparison project: How? unique definition for mass and size mock haloes: recovering mass and size under controlled conditions cosmological volume: mass positionstatistically! velocity zoom simulations: haloes within haloes within haloes…

34. Haloes going MAD  code comparison project: How? unique definition for mass and size mock haloes: recovering mass and size under controlled conditions cosmological volume: mass positionstatistically! velocity zoom simulations: haloes within haloes within haloes…

35. Haloes going MAD  code comparison project: How? unique definition for mass and size mock haloes: recovering mass and size under controlled conditions cosmological volume: mass positionstatistically! velocity zoom simulations: haloes within haloes within haloes…

36. Haloes going MAD  code comparison project: How? unique definition for mass and size mock haloes: recovering mass and size under controlled conditions cosmological volume: mass positionstatistically! velocity zoom simulations: haloes within haloes within haloes… first impressions…

37. Haloes going MAD  first impressions -- FullBox How? mass

38. Haloes going MAD How? position  first impressions -- FullBox using the 10000 most massive objects only…

39. Haloes going MAD How? velocity  first impressions -- FullBox

40. Haloes going MAD How? concentration  first impressions -- FullBox

41. Haloes going MAD How? spin parameter  first impressions -- FullBox

42. Haloes going MAD How?  first impressions -- FullBox a lot to talk about …

43. Haloes going MAD How?