The Southern SHARC Survey: the z = 0.3 - 0.7 Cluster XLF

Abstract

We present the z = 0.3 - 0.7 cluster X-ray luminosity function (XLF) determined from the Southern SHARC (Serendipitous High-redshift Archival ROSAT Cluster) survey. Over the luminosity range L ~ (0.3 - 3) x 10^44 erg/s (0.5 - 2.0 keV) the XLF is in close agreement with that of the low redshift X-ray cluster population. This result greatly strengthens our previous claim of no evolution of the cluster population, at these luminosities, at a median redshift of z =0.44.

Accepted for publication in the ApJL, 6 pages, including 4 figures, LaTeX format, requires AASTEX v4.0 macros