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Haloes going MAD Alexander Knebe Universidad Autonoma de Madrid.

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Presentation on theme: "Haloes going MAD Alexander Knebe Universidad Autonoma de Madrid."— Presentation transcript:

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 FullBox_z1.0_0256 N p =2x FullBox_z0.0_0512 N p =2x FullBox_z0.0_1024 N p =2x

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

16 Haloes going MAD  the data What? large-scale structure simulation zoom simulation of individual object(s)  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)  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)  WMAP3 cosmology  GHALO 3 Stadel et al. (2009) ghalo 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 MareNostrum Universe

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


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