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Title:
A non-thermal X-ray spectrum from the supernova remnant W 50
Authors:
Yamauchi, Shigeo; Kawai, Nobuyuki; Aoki, Takashi
Affiliation:
AA(Iwate Univ., Iwate, Japan), AB(Iwate Univ., Iwate, Japan), AC(Institute of Space and Astronautical Science, Sagamihara, Japan)
Publication:
PASJ: Publications of the Astronomical Society of Japan, vol. 46, no. 3, p. L109-L113 (PASJ Homepage)
Publication Date:
06/1994
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
STELLAR LUMINOSITY, SUPERNOVA REMNANTS, X RAY SOURCES, X RAY SPECTRA, ABSORPTION, X RAY IMAGERY
Bibliographic Code:
1994PASJ...46L.109Y

Abstract

Hard X-ray properties of the supernova remnant W 50 are presented. The extended lobe structure is confirmed in the 0.7-10 keV energy band. The surface brightness in the 0.7-4 keV band has a clear peak at the region far from SS 433, similar to that obtained by the Einstein Observatory. The shape in the high energy band (4-10 keV) is roughly consistent with that in the low energy band (0.7-4 keV), but shows a flat top structure. The X-ray spectrum from the extended structure shows a non-thermal spectrum without apparent emission lines. The spectrum becomes harder as the distance from SS 433 decreases. We discuss the origin of the X-rays in terms of synchrotron emission.

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