ASCA Spectroscopy of Middle-Aged LMC Supernova Remnants
Abstract
We present ASCA SIS spectra of two LMC supernova remnants, 0548-70.4 and 0534-69.9, extending the sample to larger, older remnants. The SIS0 and SIS1 spectra were combined and modeled as single-temperature, variable abundance, non-equilibrium ionization plasmas. The fits indicate LMC abundances (Z = 0.3) for all even-Z elements except, possibly, Ne and Mg. We compare these results with those for younger, brighter, more compact LMC remnants. We also describe a Sedov-type NEI XSPEC module to model CXO ACIS and XMM EPIC spectra of spatially resolved remnants.
- Publication:
-
AAS/High Energy Astrophysics Division #4
- Pub Date:
- April 1999
- Bibcode:
- 1999HEAD....4.0805G