Browsing Chapman, Scott by Author "Pforr, J."
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Ultra Steep Spectrum radio sources in the Lockman Hole: SERVS identifications and redshift distribution at the faintest radio fluxes
Afonso, J., L. Bizzocchi, E. Ibar, M. Grossi, et al. 2011. "Ultra Steep Spectrum radio sources in the Lockman Hole: SERVS identifications and redshift distribution at the faintest radio fluxes." The Astrophysical Journal 743:122.Ultra Steep Spectrum (USS) radio sources have been successfully used to select powerful radio sources at high redshifts (z>~2). Typically restricted to large-sky surveys and relatively bright radio flux densities, it has ...