Measuring the Hubble constant from Ryle Telescope and X-ray observations, with application to Abell 1413

Keith Grainge, Michael E. Jones, Guy Pooley, Richard Saunders, Alastair Edge, William F. Grainger, Rüdiger Kneissl

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We describe our methods for measuring the Hubble constant from Ryle Telescope (RT) interferometric observations of the Sunyaev-Zel'dovich (SZ) effect from a galaxy cluster and observation of the cluster X-ray emission. We analyse the error budget in this method: as well as radio and X-ray random errors, we consider the effects of clumping and temperature differences in the cluster gas, of the kinetic SZ effect, of bremsstrahlung emission at radio wavelengths, of the gravitational lensing of background radio sources and of primary calibration error. Using RT, ASCA and ROSATobservations of the Abell 1413, we find that random errors dominate over systematic ones, and estimate H0 = 57+23-16 km s-1 Mpc-1 for a an ΩM = 1.0, ΩΛ = 0.0 cosmology.
    Original languageEnglish
    Pages (from-to)318-326
    Number of pages8
    JournalMonthly Notices of the Royal Astronomical Society
    Volume333
    Issue number2
    DOIs
    Publication statusPublished - 21 Jun 2002

    Keywords

    • Cosmic microwave background
    • Cosmology: observations
    • Distance scale
    • Galaxies: clusters: individual: A1413
    • X-rays: general

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