Central elemental abundance ratios in the Perseus Cluster: Resonant scattering or SN Ia enrichment?

We have determined abundance ratios in the core of the Perseus Cluster for several elements. These ratios indicate a central dominance of Type 1a supe rnova (SN Ia) ejecta similar to that found for A496, A2199, and A3571. Simu ltaneous analysis of ASCA spectra from SIS1, GIS2, and GIS3 shows that the ratio of Ni to Fe abundances is similar to3.4 +/- 1.1 times solar within th e central 4'. This ratio is consistent with (and more precise than) that ob served in other clusters whose central regions are dominated by SN Ia eject a. Such a large Ni overabundance is predicted by "convective deflagration" explosion models for SNe Ia such as W7 but is inconsistent with delayed det onation models. We note that with current instrumentation the Ni K alpha li ne is confused with Fe K beta and that the Ni overabundance we observe has been interpreted by others as an anomalously large ratio of Fe K beta to Fe K alpha caused by resonant scattering in the Fe K alpha line. We argue tha t a central enhancement of SN Ia ejecta and hence a high ratio of Ni to Fe abundances are naturally explained by scenarios that include the generation of chemical gradients by suppressed SN Ia winds or ram pressure stripping of cluster galaxies. It is not necessary to suppose that the intracluster g as is optically thick to resonant scattering of the Fe K alpha line.