A soft X-ray source was observed in the direction of the Coma cluster. The flux in the energy range 0.2-0.4 keV was found to change within a time scale shorter than 80s. The fast transient and the energy spectrum prohibit identification of this source with the Coma cluster. It is suggested that this source belongs to a class of nearby transient soft X-ray sources. Key words: Coma cluster; X-ray sources.
Publications of the Astronomical Society of Japan
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