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We present the results of two (101 ks total) Chandra observations of thez=0.778 optically selected lensing cluster RCS022434-0002.5, along with weaklensing and dynamical analyses of this object. An X-ray spectrum extractedwithin R(2500) (362 h(70)^(-1) kpc) results in an integrated clustertemperature of 5.1 (+0.9,-0.5) keV. The surface brightness profile ofRCS022434-0002.5 indicates the presence of a slight excess of emission in thecore. A hardness ratio image of this object reveals that this central emissionis primarily produced by soft X-rays. Further investigation yields a clustercooling time of 3.3 times 10^9 years, which is less than half of the age of theuniverse at this redshift given the current LCDM cosmology. A weak lensinganalysis is performed using HST images, and our weak lensing mass estimate isfound to be in good agreement with the X-ray determined mass of the cluster.Spectroscopic analysis reveals that RCS022434-0002.5 has a velocity dispersionof 900 +/- 180 km/s, consistent with its X-ray temperature. The core gas massfraction of RCS022434-0002.5 is, however, found to be three times lower thanexpected universal values. The radial distribution of X-ray point sourceswithin R(200) of this cluster peaks at ~0.7 R(200), possibly indicating thatthe cluster potential is influencing AGN activity at that radius. Correlationsbetween X-ray and radio (VLA) point source positions are also examined.

A Multiwavelength Analysis of the Strong Lensing Cluster RCS 022434-0002.5 at z=0.778