We present the results of two ( 101 ks total ) Chandra observations of the z = 0.778 optically selected lensing cluster RCS022434-0002.5 , along with weak lensing and dynamical analyses of this object .
An X-ray spectrum extracted within R _ { 2500 } ( 362 h _ { 70 } ^ { -1 } kpc ) results in an integrated cluster temperature of 5.1 ^ { +0.9 } _ { -0.5 } keV .
The surface brightness profile of RCS022434-0002.5 indicates the presence of a slight excess of emission in the core .
A hardness ratio image of this object reveals that this central emission is primarily produced by soft X-rays .
Further investigation yields a cluster cooling time of 3.3 \times 10 ^ { 9 } years , which is less than half of the age of the universe at this redshift given the current \Lambda CDM cosmology .
A weak lensing analysis is performed using HST images , and our weak lensing mass estimate is found to be in good agreement with the X-ray determined mass of the cluster .
Spectroscopic analysis reveals that RCS022434-0002.5 has a velocity dispersion of 900 \pm 180 km~ { } { s ^ { -1 } } , consistent with its X-ray temperature .
The core gas mass fraction of RCS022434-0002.5 is , however , found to be three times lower than expected universal values .
The radial distribution of X-ray point sources within R _ { 200 } of this cluster peaks at \sim 0.7 R _ { 200 } , possibly indicating that the cluster potential is influencing AGN activity at that radius .
Correlations between X-ray and radio ( VLA ) point source positions are also examined .