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New Strategies for Extracting Cosmology from Galaxy Surveys - 2nd edition

→ Europe/Rome
Sexten Primary School (SEXTEN CENTER FOR ASTROPHYSICS RICCARDO GIACCONI)

Sexten Primary School

SEXTEN CENTER FOR ASTROPHYSICS RICCARDO GIACCONI
Cora Uhlemann, Elisabeth Krause, Fabian Schmidt, Julia Stadler (Max Planck Institute for Astrophysics), Tom Abel, Matteo Biagetti, Pierluigi Monaco
Description

The next generation of large-scale structure surveys such as Euclid, DESI, LSST, SPHEREx, and SKA is going to provide an unprecedented amount of observational data. These surveys will map large portions of the sky, observing hundreds of millions of bright galaxies up to high redshifts, effectively transforming cosmology into a data-driven, precision science. It is more and more important to develop the right techniques to efficiently extract information from this data. The large number of ongoing efforts reach from new summary statistics for efficient data compression to full forward models for field level analysis and use an expanded range of statistical techniques. For any of these, blind mock data challenges are an important tool to demonstrate the unbiased inference of cosmological parameters, where complications can arise from uncertainties about non-linear galaxy formation as well as observational systematics. This is the second workshop with the aim to gather a broad range of proposed (new and established) methods for the data analysis of next-generation surveys. It will also offer a platform to discuss those methods in the light of ongoing data challenges and to plan future ones. The goal is to share expertise between groups and to identify common obstacles and solutions for establishing an end-to-end pipeline that can be applied to real data.

https://www.sexten-cfa.eu/event/new-strategies-for-extracting-cosmology-from-galaxy-surveys/\

Key participants

  • Alice Pisani
  • ChangHoon Hahn
  • Martin Crocce
  • Jiamin Hou
  • Héctor Gil-Marin
  • Pierre Zhang
     
Contact
  • Monday 1 July
    • 09:00 → 09:10
      Welcome 10m
    • 09:10 → 10:10
      Beyond 2pt EFT statistics 1h
      Speaker: Pierre Zhang (ETH Zurich)
      2024_sesto_pierre.pdf
    • 10:10 → 10:40
      Evolution mapping: an approach to describe the non-linear density field 30m
      Speaker: Ariel Sanchez (Max Planck Institute for Extraterrestrial Physics)
      arielsanchez_Sesto_2024.pdf
    • 10:40 → 11:10
      Coffee Break
    • 11:10 → 11:30
      Perturbation Theory Remixed: Improved Nonlinearity Modeling beyond Standard Perturbation Theory 20m
      Speaker: Zhenyuan Wang (Penn State)
      PTremixed_Sesto2024_ZhenyuanWang.pdf
    • 11:30 → 12:00
      Fast and accurate galaxy two point correlation function emulation in extended cosmologies 30m
      Speaker: Agne Semenaite (Swinburne University of Technology)
      Semenaite_COMET.key
    • 14:00 → 15:00
      EUCLID Galaxy Clustering 1h
      Speaker: Martin Crocce (Institute for Space Science (ICE-CSIC) Barcelona Spain)
      EuclidCosmo_Sesto_crocce_01-07-2024.pdf
    • 15:00 → 15:30
      Large-Scale Modeling of Galaxy Power Spectrum for SPHEREx 30m
      Speakers: Henry Gebhardt (Caltech), Robin (Yunfei) Wen (California Institute of Technology)
      SPHEREx_PSM_SFB-Robin_Wen.pdf
    • 15:30 → 16:00
      CMB x LSS Cosmology with the HalfDome simulations 30m
      Speaker: Adrian Bayer (CCA)
    • 16:00 → 16:30
      Coffee Break
    • 16:30 → 17:00
      Simulation-based Forward Modeling Cross-Survey Cross-Correlations with Diffsky 30m
      Speaker: Andrew Hearin (Argonne National Lab)
    • 17:00 → 17:30
      Examining the redshift evolution of the HOD with Differentiable Forward Models 30m
      Speaker: Gillian Beltz-Mohrmann (Argonne National Laboratory)
      GillianBeltz-Mohrmann_Diffsky.pdf
    • 17:30 → 18:00
      Projection effects in likelihood analyses of galaxy clustering 30m
      Speaker: Andrea Pezzotta (Max Planck Institut für Extraterrestrische Physik)
      Sesto_workshop_AndreaPezzotta.pdf
    • 18:30 → 20:00
      Reception
  • Tuesday 2 July
    • 09:00 → 10:00
      Results from DESI data using BAO and RSD 1h
      Speaker: Hector Gil Marin (University of Barcelona (ICCUB))
      DESI_BAO_HGM.pdf
    • 10:00 → 10:30
      Observational systematics in galaxy surveys: a DESI perspective 30m
      Speaker: Rongpu Zhou
    • 10:30 → 11:00
      Coffee Break
    • 11:00 → 11:30
      Power spectrum bias due to imaging systematics 30m
      Speaker: Karim Tanveer
      Karim-20240702-Sesto.pdf
    • 11:30 → 12:00
      Precise Cosmological Constraints from BOSS and DESI Galaxy Clustering using the Wavelet Scattering Transform 30m
      Speaker: Georgios Valogiannis (University of Chicago)
      WST_Sesto_Valogiannis.pdf
    • 14:00 → 15:00
      Higher-order statistics in large-scale structure 1h
      Speaker: Jiamin Hou (University of Florida / Max-Planck Institute for Extraterrestrial Physics)
    • 15:00 → 15:20
      Analytical model for density-split galaxy clustering 20m
      Speaker: Mathilde Pinon (CEA/Irfu/DPhP)
      sexten_mathilde_pinon.pdf
    • 15:20 → 15:50
      Coffee Break
    • 15:50 → 16:20
      Higher orders and Smaller Scales 30m
      Speaker: Lado Samushia
      Lado Samushia - Higher orders and Smaller Scales.pdf
    • 16:20 → 16:50
      The matter-radiation-equality scale: Robustness criterion on ultra-large scales and new insights into the Hubble tension 30m
      Speaker: Benedict Bahr-Kalus
      BahrKalus Turnover Sexten.pdf
    • 16:50 → 17:40
      Discussion: Systematics
      Conveners: Pierluigi Monacco, Satya Gontcho A Gontcho
      Discussion on Systematics in Galaxy Clustering (Sesto Workshop July 1-5).pdf
  • Wednesday 3 July
    • 09:00 → 10:00
      Unraveling the Universe with Cosmic Voids 1h
      Speaker: Alice Pisani (Alice)
      AlicePisani_Sesto_2024.pdf
    • 10:00 → 10:30
      Cosmology with clustering of galaxy clusters 30m
      Speaker: Alessandra Fumagalli
      sesto_fumagalli.pdf
    • 10:30 → 11:00
      Coffee Break
    • 11:00 → 11:30
      Enhanced galaxy clustering analyses with non-perturbative pairwise velocity distributions 30m
      Speaker: Alexander Eggemeier
      Sesto2024_AEggemeier.pdf
    • 11:30 → 12:00
      Explainable deep learning models for cosmological structure formation 30m
      Speaker: Luisa Lucie-Smith (Max Planck Institute for Astrophysics)
    • 14:00 → 15:00
      Opportunities and challenges of SBI/ILI approaches to galaxy clustering 1h
      Speaker: ChangHoon Hahn (Princeton University)
      changhoonhahn.sbi.pdf
    • 15:00 → 15:30
      How much information can be extracted from galaxy clustering at the field level? 30m
      Speaker: Beatriz Tucci
      Tucci_Sesto24.pdf
    • 15:30 → 16:00
      Coffee Break
    • 16:00 → 16:20
      Information maximizing persistent homology for halo catalogs 20m
      Speaker: Karthik Viswanathan
      k_viswanathan_tda.pdf
    • 16:20 → 16:40
      Towards robust Bayesian inference through implicit priors from simulations 20m
      Speaker: Simon Ding (Institut d'Astrophysique de Paris (IAP))
      slides_SimonDing.pdf
    • 16:40 → 17:10
      Cosmology in the machine learning era 30m
      Speaker: Francisco Villaescusa-Navarro
    • 17:10 → 18:00
      Discussion: Small-scale modeling
      Conveners: Francisco Villaescusa-Navarro (Flatiron Institute), Martin Crocce (Institute for Space Science (ICE-CSIC) Barcelona Spain)
      Discussion on Systematics in Galaxy Clustering (Sesto Workshop July 1-5).pdf
    • 20:00 → 22:30
      Conference Dinner
  • Thursday 4 July
    • 09:00 → 14:00
      Social Event
      Presentation.pdf
    • 14:50 → 15:20
      Parity-odd Power Spectra: Concise Statistics for Cosmological Parity Violation in the Primordial Trispectrum 30m
      Speaker: Drew Jamieson (Max Planck Institute for Astrophysics)
      DrewJamieson.pdf
    • 15:20 → 15:40
      Reconstructive approaches to Primordial non-Gaussianity 20m
      Speaker: Thomas Flöss (University of Groningen)
      TFloess_PNG_Sesto.pdf
    • 15:40 → 16:10
      Coffee Break
    • 16:10 → 16:30
      Improved Constraints on Local Primordial Non-Gaussianity from BOSS Data with Galaxy Bias 20m
      Speaker: Jamie Sullivan (UC Berkeley)
      Sullivan_Sesto_Summer_2024.pdf
    • 16:30 → 16:50
      Probing primordial non-Gaussianity by reconstructing the initial conditions with machine learning 20m
      Speaker: Xinyi Chen (Yale University)
      Sesto_Xinyi.pdf
    • 16:50 → 17:10
      C3NN: Cosmological Correlator Convolutional Neural Network -- an interpretable machine learning tool for cosmological analyses 20m
      Speaker: Zhengyangguang Gong (University Observatory Ludwig-Maximilians University of Munich)
      C3NN Sesto.pdf
    • 17:10 → 18:00
      Discussion: New strategies and new physics: how do we convince the community of cosmology from novel probes?
      Conveners: ChangHoon Hahn (Princeton University), Pierre Zhang (ETH Zurich)
      Discussion on Systematics in Galaxy Clustering (Sesto Workshop July 1-5).pdf
  • Friday 5 July
    • 09:00 → 09:30
      Field Level Inference: Simulation Based versus Bayesian Inference 30m
      Speaker: Uros Seljak
    • 09:30 → 10:00
      Field-level inference of primordial non-Gaussianity with next-generation galaxy surveys 30m
      Speaker: Adam Andrews (OAS INAF Bologna)
    • 10:00 → 10:20
      Coffee Break
    • 10:20 → 10:40
      Bayesian Inference of Initial Conditions from Non-Linear Cosmic Structures using Field-Level Emulators 20m
      Speaker: Ludvig Doeser (Stockholm University)
      DOESER_20240705_SEXTEN.pdf
    • 10:40 → 11:00
      Field-Level Inference of the BAO Scale with LEFTfield 20m
      Speaker: Ivana Babić (MPA)
    • 11:00 → 12:00
      Discussion: Summaries & Field-level
      Conveners: Elisabeth Krause, Julia Stadler (Max Planck Institute for Astrophysics)
      Discussion on Systematics in Galaxy Clustering (Sesto Workshop July 1-5).pdf
    • 14:00 → 18:00
      Free Discussion
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