S'authentifier

The 4th joint meeting of eBOSS-DESI France

4–5 oct. 2018
Marseille
Fuseau horaire Europe/Paris

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Liste des Contributions

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  1. 2. Observations in Cosmology
    Pierros Ntelis (CPPM)
    04/10/2018 14:00

    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
    Mme Charling Tao (CPPM)
    04/10/2018 14:20

    Status of work

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  3. 10. Study of the void related systematics in the Alcock-Paczynski test
    Marie Aubert (CPPM)
    04/10/2018 14:40

    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)
    04/10/2018 15:30

    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)
    04/10/2018 15:50

    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)
    04/10/2018 16:10

    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
    Mme victoria de sainte agathe (LPNHE)
    05/10/2018 10:00

    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)
    05/10/2018 10:20

    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)
    05/10/2018 10:40

    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)
    05/10/2018 11:30

    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)
    05/10/2018 11:50

    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
    05/10/2018 12:10