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The 2nd Shanghai Assembly on Cosmology and Structure Formation

October 30, 2023 to November 3, 2023
TD Lee Library
Asia/Shanghai timezone

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Session

Cosmology: systematics & tensions

Nov 3, 2023, 2:00 PM
Conference Hall (TD Lee Library)

Conference Hall

TD Lee Library

901 Jianchuan Road, Minhang District, Shanghai, 200240

Conveners

Cosmology: systematics & tensions

  • Zhongxu Zhai (Shanghai Jiao Tong University)

Presentation materials

There are no materials yet.

  1. 18. Prior effects and the cosmological tensions
    Elisa Gouvea Mauricio Ferreira (Kavli Institute for the Physics and Mathematics of the Universe)
    11/3/23, 2:00 PM
    Tensions & Challenges
    Talk

    With the newest cosmological observations there was an increase in the precision that we measure cosmological parameters. This new precision also led to the emergence of discrepancies in different measurements of these parameters, the so-called cosmological tensions. These could hint systematic effects or new physics. Also, with this increase in precision comes an inflation in the number of...

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  2. 68. Cosmological Analysis of the Future CSST Survey Data Using the Tomographic AP Method
    Xiaodong Li (SYSU)
    11/3/23, 2:25 PM
    Talk

    As the stage-IV surveys are beginning, we need to make good preparations for data analysis. The "tomographic Alcock-Pacyznski method" is a unique analysis method that can explore smaller clustering scales. When applied to the SDSS survey, it successfully improved the probing precision of dark energy, the Hubble constant, and neutrino masses parameters by 30-100%. In this talk, I will present...

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  3. 12. Is the large-scale structure traced by the BOSS LOWZ galaxies consistent with Planck?
    Zhiwei Shao (Shanghai Jiao Tong University)
    11/3/23, 2:45 PM
    Tensions & Challenges
    Talk

    Recently, several studies reported a significant discrepancy between
    the clustering and lensing of the Baryon Oscillation Spectroscopic
    Survey (BOSS) galaxies in the Planck cosmology. We construct a
    simple yet powerful model based on the linear theory to assess whether
    this discrepancy points toward deviations from Planck. Focusing
    on scales...

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  4. 28. Towards precision cosmology ---- systematics removal with Stage III data
    Ji Yao (Shanghai Astronomical Observatory)
    11/3/23, 3:00 PM
    Inference & Statistics
    Talk

    Precision cosmology is a very important target for the coming Stage IV weak lensing studies. It is also hard to achieve due to multiple systematical errors. In this talk we present systematics mitigation performed in 2 published papers and some ongoing works. More specifically, we present intrinsic alignment mitigation with KiDS data, and shear bias removal as well as redshift error...

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