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Title:
EXOSAT observations of the remnant of SN1006
Authors:
Jones, L. R.; Pye, J. P.
Affiliation:
AA(Leicester, University, England), AB(Leicester, University, England)
Publication:
Royal Astronomical Society, Monthly Notices (ISSN 0035-8711), vol. 238, May 15, 1989, p. 567-585. Research supported by SERC. (MNRAS Homepage)
Publication Date:
05/1989
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ENERGY SPECTRA, EXOSAT SATELLITE, SUPERNOVA REMNANTS, X RAY ASTRONOMY, X RAY IMAGERY, HIGH RESOLUTION, LINE SPECTRA, OXYGEN SPECTRA
Bibliographic Code:
1989MNRAS.238..567J

Abstract

The remnant produced by the supernova explosion of AD 1006 has been studied in X-rays with the Exosat Observatory. Images in the energy range 0.1-2 keV with resolution sufficient to resolve the limbs, obtained through three different filters, reveal a limb-brightened nebula containing clumps of emission and displaying large spectral variations with position. The three-dimensional structure has been deduced under simplifying assumptions, and is used, together with a broad-band (0.1-8 keV) spectrum, to derive a mass of X-ray emitting material (after correcting for a lack of ionization equilibrium) of 3.2-6.0 solar masses, indicating a Type I supernova origin. Hot material in the interior is confirmed. Comparison of X-ray and radio limb profiles supports a thermal origin for the X-rays. Evidence is found for a nonuniform distribution of the oxygen line emission discovered by previous investigations.

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