Variable X-Ray Sources
نویسندگان
چکیده
منابع مشابه
Multiple and variable X - ray sources in the globular clusters
We detect stars from the Hipparcos and Tycho Catalogues in the field of view of observations with the ROSAT HRI of three globular clusters. We use the positions of these stars to reduce the systematic error in the positions of X-ray sources in the clusters to ∼ 2′′ for ω Cen and NGC 6752, and 1′′ for NGC 6397. We detect three X-ray sources in the core of ω Cen, and four in the core of NGC 6752;...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1971
ISSN: 0252-9211
DOI: 10.1017/s0252921100032899