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Title:
EXOSAT observations of the TYCHO supernova remnant
Authors:
Smith, A.; Davelaar, J.; Peacock, A.; Taylor, B. G.; Morini, M.; Robba, N. R.
Affiliation:
AA(ESA, Space Science Dept., Noordwijk, Netherlands), AB(ESA, Space Science Dept., Noordwijk, Netherlands), AC(ESA, Space Science Dept., Noordwijk, Netherlands), AD(ESA, Space Science Dept., Noordwijk, Netherlands), AE(CNR, Istituto di Fisica Cosmica ed Applicazioni dell'Informatica, Palermo, Italy)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 325, Feb. 1, 1988, p. 288-295. (ApJ Homepage)
Publication Date:
02/1988
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
ASTRONOMICAL SPECTROSCOPY, EMISSION SPECTRA, EXOSAT SATELLITE, SUPERNOVA REMNANTS, X RAY SPECTRA, CONTINUOUS SPECTRA, HYDRODYNAMICS, PROPORTIONAL COUNTERS, X RAY SOURCES
DOI:
10.1086/166003
Bibliographic Code:
1988ApJ...325..288S

Abstract

The Gas Scintillation Proportional Counter and the Medium Energy Instruments on board EXOSAT were used to measure the X-ray spectrum of the Tycho supernova remnant over the range 1.5 - 10 keV. The emission lines due to S, Ar, Ca, and Fe (≡6.48 keV) are clearly resolved from the underlying continuum which is measured to have a temperature of 6.5±0.5 keV. From a consideration of all available X-ray observations it is suggested that the 6.5 keV continuum and the Fe K emission arise in the primary shock while the emission due to Si, S, Ar, and Ca and the emission observed in the LE are associated with the reverse shock.

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