• Mass and Metallicity of Five X-Ray-bright Galaxy Groups 

    Hwang, Una; Mushotzky, Richard F.; Burns, Jack O.; Fukazawa, Yasushi; White, Richard A. (American Astronomical Society, 1999-05)
    We present ASCA X-ray observations of a sample of Ðve groups selected from a cross-correlation of the ROSAT All-Sky Survey with the White et al. optical catalog of groups. These X-rayÈbright groups significantly increase ...
  • X-Ray and Radio Interactions in the Cores of Cooling Flow Clusters 

    Rizza, E.; Loken, Christen; Bliton, Mark; Roettiger, K.; Burns, Jack O.; Owen, Frazer N. (American Astronomical Society, 2000-01)
    We present high-resolution ROSAT X-ray and radio observations of three cooling Ñow clusters containing steep-spectrum radio sources at their cores. All three systems exhibit strong signs of interaction between the radio ...
  • The X-Ray Luminosity Function of Nearby Rich and Poor Clusters of Galaxies:A Cosmological Probe 

    Ledlow, Michael J.; Loken, Christen; Burns, Jack O.; Owen, Frazer N.; Voges, Wolfgang (American Astronomical Society, 1999-05)
    In this Letter, we present a new determination of the local (z · 0.09) X-ray luminosity function (XLF) using a large, statistical sample of 294 Abell clusters and the ROSAT All-Sky Survey. Despite the optical selection of ...