Library Portal | UWC Portal | National ETDs | Global ETDs
    • Login
    Contact Us | About Us | FAQs | Login
    View Item 
    •   DSpace Home
    • Faculty of Natural Sciences
    • Physics and Astronomy
    • Research Articles (Physics)
    • View Item
    •   DSpace Home
    • Faculty of Natural Sciences
    • Physics and Astronomy
    • Research Articles (Physics)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Prospects for cosmic magnification measurements using H I intensity mapping

    Thumbnail
    View/Open
    staa1578.pdf (593.7Kb)
    Date
    2020
    Author
    Witzemann, Amadeus
    Pourtsidou, Alkistis
    Santos, Mario G.
    Metadata
    Show full item record
    Abstract
    We investigate the prospects of measuring the cosmic magnification effect by cross-correlating neutral hydrogen intensity mapping (H I IM) maps with background optical galaxies. We forecast the signal-to-noise ratio for H i IM data from SKA1-MID and HIRAX, combined with LSST photometric galaxy samples. We find that, thanks to their different resolutions, SKA1-MID and HIRAX are highly complementary in such an analysis. We predict that SKA1-MID can achieve a detection with a signal-to-noise ratio of ∼15 on a multipole range of ℓ ≲ 200, while HIRAX can reach a signal-to-noise ratio of ∼50 on 200 < ℓ < 2000. We conclude that measurements of the cosmic magnification signal will be possible on a wide redshift range with foreground H I intensity maps up to z ≲ 2, while optimal results are obtained when 0.6 ≲ z ≲ 1.3.
    URI
    https://doi.org/10.1093/mnras/staa1578
    http://hdl.handle.net/10566/5853
    Collections
    • Research Articles (Physics)

    DSpace 6.3 | Ubuntu | Copyright © University of the Western Cape
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Login

    Statistics

    View Usage Statistics

    DSpace 6.3 | Ubuntu | Copyright © University of the Western Cape
    Contact Us | Send Feedback
    Theme by 
    Atmire NV