The kinematics and chemical stratification of the type Ia supernova remnant 0519-69.0 - An XMM-Newton and Chandra study

摘要: We present a detailed analysis of the XMM-Newton and Chandra X-ray data young type Ia supernova remnant SNR 0519-69.0, which is situated in Large Magellanic Cloud. used from both ACIS EPIC MOS instruments, high resolution spectra obtained with reflection grating spectrometer (RGS).
Our spatial distribution line emission using shows that there radial stratification oxygen, intermediate mass elements (IME) iron, more massive peaking toward center. Using deprojection technique we measure forward shock radius 4.0±0.3 pc reverse 2.7±0.4 pc.
We took observed shocked ejecta into account modeling spectra, for multi-component non-equilibrium ionization models, components corresponding to layers dominated by one or two elements. An additional component was added order represent interstellar medium, mostly contributed continuum emission. This multicomponent model fits adequately, also employed characterize distinct regions extracted data. From our spectral find approximate fractional masses most abundant are: ≈ 32%, 7%/5%, 1% 55%. derive circumstellar density nH = 2.4 ± 0.2 cm-3. density, together measurements radii suggest an age 0519-69.0 450±200 yr, somewhat lower than, but consistent estimate based on extent light echo (600±200 yr).
Finally, RGS measured Doppler broadening σ 1873 50 km s-1, velocity vFS 2770 500 km s-1. discuss results context single degenerate explosion semi-analytical numerical modeling, compare characteristics those other remnants.