2008/09/18 by Carles Badenes, Badenes, Carles, Eduardo Bravo +3
Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #Gamma-ray bursts and supernovae #Neutrino Physics Research
paper · pdf · doi:10.48550/arxiv.0809.3151
openalex publication_date 2008/09/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The Mn to Cr mass ratio in supernova ejecta has recently been proposed as a tracer of Type Ia SN progenitor metallicity. We review the advantages and problems of this observable quantity, and discuss them in the framework of two Galactic supernova remnants: the well known Tycho SNR and W49B, an older object that has been tentatively classified as Type Ia. The fluxes of the Mn and Cr Ka lines in the X-ray spectra of these SNRs observed by the Suzaku and ASCA satellites suggest progenitors of supersolar metallicity for both objects.