A Cyberinfrastructure platform to meet the needs of data intensive radio astronomy on route to the SKA

Results for "extragalactic astrophysics"


  • Hydrogen 21-cm Intensity Mapping at redshift 0.8

    Observations of 21-cm radio emission by neutral hydrogen at redshifts z ~ 0.5 to ~ 2.5 are expected to provide a sensitive probe of cosmic dark energy. This is particularly true around the onset of acceleration at z ~ 1, where traditional optical cosmology becomes very difficult because of the in...

    Tags: nature, cosmology, extragalactic astrophysics, 21cm, radio, hydrogen

    3132 days ago

  • PyMorph: Automated Galaxy Structural Parameter Estimation using Python

    We present a new software pipeline -- PyMorph -- for automated estimation of structural parameters of galaxies. Both parametric fits through a two dimensional bulge disk decomposition as well as structural parameter measurements like concentration, asymmetry etc. are supported. The pipeline is de...

    Tags: python, galaxies, mnras, arxiv, extragalactic astrophysics, methods

    3125 days ago

  • Rotation Measures of Radio Sources in Hot Galaxy Clusters

    The goal of this work is to investigate the Faraday rotation measure (RM) of radio galaxies in hot galaxy clusters in order to establish a possible connection between the magnetic field strength and the gas temperature of the intracluster medium. We performed Very Large Array observations at 3.6 ...

    Tags: arxiv, a&a, extragalactic astrophysics, rm, rotation measure

    3124 days ago

  • Probing the first galaxies with the SKA

    Observations of anisotropies in the brightness temperature of the 21 cm line of neutral hydrogen from the period before reionization would shed light on the dawn of the first stars and galaxies. In this paper, we use large-scale semi-numerical simulations to analyse the imprint on the 21 cm signa...

    Tags: cosmology, extragalactic astrophysics, arxiv, ska, galaxies

    3084 days ago