Spatial Distribution of X-ray Emitting Ejecta in Tycho’s Snr: Indications of Shocked Titanium
作者： M. Miceli , S. Sciortino , E. Troja , S. Orlando
DOI: 10.1088/0004-637X/805/2/120
关键词:
摘要: Young supernova remnants (SNRs) show characteristic ejecta-dominated X-ray emission that allows us to probe the products of explosive nucleosynthesis processes and ascertain important information about physics explosions. Hard observations have recently revealed presence radioactive decay lines 44Ti at ~67.9 ~78.4 keV in Tycho's SNR. Here, we analyze a set XMM-Newton archive We produce equivalent width (EW) maps Fe K Ca xix find indications for stratification abundances these elements significant anisotropies. then perform spatially resolved spectral analysis by identifying five different regions characterized high/low values EW. spatial distribution is correlated with Cr xxii. also detect Ti line complex spectra extracted from two highest EWs. The remains undetected where EWs are low. Our results indicate post-shock colocated other iron-peak nuclei SNR, agreement predictions multi-D models SNe Ia.
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