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

Results for "21cm"


  • 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

    3198 days ago

  • Compact HI clouds from the GALFA-HI survey

    The Galactic Arecibo L-band Feed Array HI (GALFA-HI) survey is mapping the entire Arecibo sky at 21-cm, over a velocity range of -700 to +700 km/s (LSR), at a velocity resolution of 0.18 km/s and a spatial resolution of 3.5 arcmin. The unprecedented resolution and sensitivity of the GALFA-HI surv...

    Tags: galfa, galfa-hi, hi, arecibo, l-band, ism, 21cm, arxiv, aj

    3179 days ago