Abell 1451 and 1RXS J131423.6-251521:: A multi-wavelength study of two dynamically perturbed clusters of galaxies

We present results from optical, X-ray and radio observations of two X-ray bright (L-X similar to 10(45) erg s(-1)) galaxy clusters. Abell 1451 is at redshift z = 0.1989 and has line-of-sight velocity dispersion sigma(v) = 1330 km s(-1) as measured from 57 cluster galaxies. It has regular X-ray emission without signs of substructure, a Gaussian velocity distribution, lack of a cooling flow region and significant deviations from the observed scaling laws between luminosity, temperature and velocity dispersion, indicating a possible merging shock. There is only one spectroscopically confirmed cluster radio galaxy, which is close to the X-ray peak. 1RXS J131423.6-251521 (for short RXJ1314-25) has z = 0.2474 and sigma(v) = 1100 km s(-1) from 37 galaxies. There are two distinct galaxy groups with a projected separation of approximate to700 kpc. The velocity histogram is bi-modal with a redshift-space separation of similar to1700 km s(-1), and the X-ray emission is double peaked. Although there are no spectroscopically confirmed cluster radio galaxies, we have identified a plausible relic source candidate.