Noam Libeskind Tracing the Cosmic Web

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1 Noam Libeskind Tracing the Cosmic Web

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3 The Comparison project : is an attempt to speak the same language is an attempt to gain insight from the different conceptualizations of the cosmic web. is not an attempt to credit or discredit one technique over another. Noam Libeskind Tracing the Cosmic Web

4 Colberg et al 2008

5 ORIGAMI: Bridget Falck & Mark Neyrink DisPerSE: Thierry Sousbie Velocity Shear Tensor web: NIL & Yehuda Hoffman Tidal Tensor web: Jaime Forero-Romero NEXUS: Marius Cautun, Rein van der Weygaert, Bernard Jones CLASSIC: Francisco Kitaura & Sebastian Nuza FINE: Roberto Gonzalez & Nelson Padilla Minimal Spanning Tree: Mehmet Alpaslan Bisous: Elmo Tempel & Radu Stoica Noam Libeskind Tracing the Cosmic Web

6 ORIGAMI: Bridget Falck & Mark Neyrink DisPerSE: Thierry Sousbie Velocity Shear Tensor web: NIL & Yehuda Hoffman Based on shell crossings (see also talk by Shandarin, Hidding, Abel) Tidal Tensor web: Jaime Forero-Romero NEXUS: Marius Cautun, Rein van der Weygaert, Bernard Jones CLASSIC: Francisco Kitaura & Sebastian Nuza FINE: Roberto Gonzalez & Nelson Padilla Minimal Spanning Tree: Mehmet Alpaslan Bisous: Elmo Tempel & Radu Stoica Noam Libeskind Tracing the Cosmic Web

7 ORIGAMI: Bridget Falck & Mark Neyrink DisPerSE: Thierry Sousbie Velocity Shear Tensor web: NIL & Yehuda Hoffman Tidal Tensor web: Jaime Forero-Romero NEXUS: Marius Cautun, Rein van der Weygaert, Bernard Jones Based on shell crossings (see also talk by Shandarin, Hidding, Abel). Based on various aspects of the (dark) matter density field CLASSIC: Francisco Kitaura & Sebastian Nuza FINE: Roberto Gonzalez & Nelson Padilla Minimal Spanning Tree: Mehmet Alpaslan Bisous: Elmo Tempel & Radu Stoica Noam Libeskind Tracing the Cosmic Web

8 ORIGAMI: Bridget Falck & Mark Neyrink DisPerSE: Thierry Sousbie Velocity Shear Tensor web: NIL & Yehuda Hoffman Tidal Tensor web: Jaime Forero-Romero NEXUS: Marius Cautun, Rein van der Weygaert, Bernard Jones Based on shell crossings (see also talk by Shandarin, Hidding, Abel). Based on various aspects of the (dark) matter density field CLASSIC: Francisco Kitaura & Sebastian Nuza FINE: Roberto Gonzalez & Nelson Padilla Minimal Spanning Tree: Mehmet Alpaslan Bisous: Elmo Tempel & Radu Stoica Designed/intended for point distributions (observations): Slightly incomplete Noam Libeskind Tracing the Cosmic Web

9 Cautun et al 2014, submitted FOF with each halo designated as a Knot, Filament, Wall, void Return two files Web element designation for each point in the simulation on a predefined (2Mpc) grid Noam Libeskind Tracing the Cosmic Web

10 Two DM only simulations (LCDM, Plank) L box = 100 h -1 Mpc L box = 200 h -1 Mpc N part = M DM= 4.1x10 10 h -1 M sol M DM= 3.2x10 11 h -1 M sol N part = M DM= 5.1x10 10 h -1 M sol M DM= 4.1x10 11 h -1 M sol N part = M DM=6. 4x10 10 h -1 M sol M DM= 5.1x10 11 h -1 M sol With thanks to G Yepes Noam Libeskind Tracing the Cosmic Web

11 Two DM only simulations (LCDM, Plank) L box = 100 h -1 Mpc L box = 200 h -1 Mpc N part = M DM= 4.1x10 10 h -1 M sol M DM= 3.2x10 11 h -1 M sol N part = M DM= 5.1x10 10 h -1 M sol M DM= 4.1x10 11 h -1 M sol N part = M DM=6. 4x10 10 h -1 M sol M DM= 5.1x10 11 h -1 M sol Noam Libeskind Tracing the Cosmic Web

12 FOF, b=0.2, Haloes > 20 particles kept with thanks to Stefan Noam Gottlöber Libeskind Tracing the Cosmic Web

13 Knots Filaments Walls Voids

14 Knots Filaments Walls Voids

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20 How many individual cells have N agreements?

21 How many individual cells have N agreements?

22 Randomize cells keeping volume fraction constant

23 How many individual cells have N agreements?

24 How many individual cells have N agreements?

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32 Interesting data set: 6+3 methods run on two volumes at 3 resolutions all data is free for anyone s use (contact me!) Can add different cosmologies (e.g. Warm DM, Scale Free, etc) Can (possibly) add gas-dynamics Can add different redshifts What questions can we answer? What tests can we devise?

33 Interesting data set: 6+3 methods run on two volumes at 3 resolutions all data is free for anyone s use (contact me!) Can add different cosmologies (e.g. Warm DM, Scale Free, etc) Can (possibly) add gas-dynamics Can add different redshifts What questions can we answer? What tests can we devise? Dank U!

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