Abstract
Strong flux of x-ray emission with steep power-law spectrum was detected by Mir-Kvant from transient x-ray source GRS1739-278. The source was observed during survey of Galactic Center field in February–March of 1996. Later observations by Sigma/Granat and RXTE experiments allowed to classify the source as a typical soft x-ray Nova with unusually slow rise of x-ray flux during major outburst. The observations of the source by TTM/Kvant before the peak of brightness did not reveal the presense of strong soft component in the spectrum.
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