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- W70384697 abstract "We report on a ROSAT HRI observation of the hard transient GRO J0422+32 about 42 days after the start of the outburst. The X-ray position (error radius 6 arcsec) agrees well with the positions of the proposed optical and radio counterparts. In the ROSAT energy band (0.1-2.4 keV) the source showed strong flaring activity; a power spectrum analysis of the photon arival times yields a spectrum with a decrease at frequencies above 0.1 Hz that can be described by a power law with a slope of −1.5. Below 0.1 Hz the spectrum flattens; QPO peaks reported in hard X-rays are confirmed. The integrated rms variability is very high (∼4O%). The meaaured 0.1-2.4 keV X-ray flux of 0.3 Crab does not require an additional soft X-ray component in GRO J0422+32, if the source followed the decay trend reported in hard X-rays" @default.
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- W70384697 date "1993-06-01" @default.
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- W70384697 title "A ROSAT observation of the black hole candidate GRO J0422+32." @default.
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