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The 4th joint meeting of eBOSS-DESI France

Oct 4 – 5, 2018
Marseille
Europe/Paris timezone

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Contribution List

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  1. 2. Observations in Cosmology
    Pierros Ntelis (CPPM)
    10/4/18, 2:00 PM

    In the era of upcoming redshift surveys, the sky will be more revealing than ever! In this talk, I will summarise standard and non standard observational methods and scenarios.

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  2. 1. DT-Voids and BAO
    Mrs Charling Tao (CPPM)
    10/4/18, 2:20 PM

    Status of work

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  3. 10. Study of the void related systematics in the Alcock-Paczynski test
    Marie Aubert (CPPM)
    10/4/18, 2:40 PM

    The Alcock-Paczynski test is a very simple yet powerful tool to constraint cosmology when applied to voids. In this talk, I will present preliminary work accomplished in order to master void related systematics in the Alcock-Paczynski test.

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  4. 11. Measuring the growth rate of structure with cosmic voids in GAMA
    Dr Adam Hawken (CPPM)
    10/4/18, 3:30 PM

    We measure the cross correlation of voids and galaxies in the Galaxy And Mass Assembly (GAMA) survey. This cross correlation exhibits an anisotropy indicative of redshift space distortions (RSD) caused by galaxies falling from the centres of voids onto the surrounding mass. We introduce a model for the multipoles of the void-galaxy cross correlation function that allows for void positions to...

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  5. 6. DESxeBOSS gravity test discussion
    Eric Jullo (LAM)
    10/4/18, 3:50 PM

    In this session, I will briefly mention my plans for this project, and try to set up a schedule for the analysis.

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  6. 5. Quasar identification with SQUEzE
    Ignasi Pérez-Ràfols (LAM, Marseille)
    10/4/18, 4:10 PM

    We present the current performance of the machine-learning code, SQUEzE, to identify quasars and estimate their redshift. We compare its performance with that of QuasarNet and conclude that, while it may not be as accurate as QuasarNet, it is lighter and more flexible

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  7. 8. Measurment of the BAO with Lya auto and cross correlation functions
    Mrs victoria de sainte agathe (LPNHE)
    10/5/18, 10:00 AM

    I will present the current status of the Lya group

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  8. 9. Measuring Large-Scale Inhomogeneities of Metals
    Sean Morrison (LAM)
    10/5/18, 10:20 AM

    We are measuring the large scale of inhomogeneity of metals, which are expected to be associated with large scale proximity to quasars. These inhomogeneities are currently traced by combining oxygen, helium and hydrogen absorption, but in the future they will refer to directly observed quasar positions.

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  9. 4. DLA bias as a function of DLA properties
    Ignasi Pérez-Ràfols (LAM, Marseille)
    10/5/18, 10:40 AM

    I am going to present the latest measurements of the DLA bias. In particular I'll present its evolution with redshift, column density of the DLAs, and the metal strength of the DLAs. The metal strength is defined from an average of equivalent widths of the strongest detectable low-ionization metal lines. These results confirm the physical origin of the relation of bias factors measured from...

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  10. 3. The Study of Galaxies in Absorption and their use as a tracer.
    Matthew Pieri (Laboratoire d'Astrophysique de Marseille)
    10/5/18, 11:30 AM

    I will discuss latest results on the properties of galaxies traced by the strong Lyman-alpha forest absorption and, on combining them with Damped Lyman alpha forest absorbers, their use as a BAO tracer.

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  11. 7. 1D power spectrum from Lya forest with eBOSS quasars
    Solène Chabanier (CEA Saclay)
    10/5/18, 11:50 AM

    Presentation of the analysis of the 1D power spectrum from the lyman alpha forest with DR14

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  12. 12. eBOSS-DESI France Planning Discussion
    10/5/18, 12:10 PM