Broadband polarimetry with the square kilometre array: A unique astrophysical probe

B. M. Gaensler, Iván Agudo, Takuya Akahori, Julie Banfield, Rainer Beck, Ettore Carretti, Jamie Farnes, Marijke Haverkorn, George Heald, David Jones, Thomas Landecker, Sui Ann Mao, Ray Norris, Shane O'sullivan, Lawrence Rudnick, Dominic Schnitzeler, Nicholas Seymour, Xiaohui Sun

    Research output: Contribution to journalConference articlepeer-review

    3 Scopus citations


    Faraday rotation of polarised background sources is a unique probe of astrophysical magnetic fields in a diverse range of foreground objects. However, to understand the properties of the polarised sources themselves and of depolarising phenomena along the line of sight, we need to complement Faraday rotation data with polarisation observations over very broad bandwidths. Just as it is impossible to properly image a complex source with limited u-v coverage, we can only meaningfully understand the magneto-ionic properties of polarised sources if we have excellent coverage in l2-space. We here propose a set of broadband polarisation surveys with both SKA1 and SKA2, which will provide a singular set of scientific insights on the ways in which galaxies and their environments have evolved over cosmic time.

    Original languageEnglish (US)
    Article number103
    JournalProceedings of Science
    StatePublished - 2014
    EventAdvancing Astrophysics with the Square Kilometre Array, AASKA 2014 - Giardini Naxos, Italy
    Duration: Jun 9 2014Jun 13 2014

    Bibliographical note

    Funding Information:
    B.M.G. acknowledges the support of the Australian Research Council (ARC) through an Australian Laureate Fellowship (FL100100114), and through the ARC Centre of Excellence for All-sky Astrophysics (CE110001020). We thank the referee for a constructive review of the original manuscript.


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