Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...403l..39m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 403, no. 1, p. L39-L42.
Astronomy and Astrophysics
Astronomy
96
Binary Stars, Black Holes (Astronomy), Stellar Flares, X Ray Spectra, Energy Spectra, Ginga Satellite, Power Spectra, Stellar Mass
Scientific paper
An X-ray nova, Nova Muscae 1991 or GS 1124-68, was observed with the LAC on board Ginga. On 1991 January 22, 7 days after its X-ray maximum, the same time variations were discovered as those observed in GX 339-4 at its near-flare maximum. The phase lags between different energy X-ray showed a peculiar large and broad peak, which was the same as that observed in GX 339-4. Shapes of the power spectrum density functions were similar, and indices of the power-law component of the X-ray energy spectra were the same. These suggest that in some black hole candidates, the same X-ray production processes are taking place in the very high flare state. We also confirmed the canonical time variations of X-rays of GS 1124-68 in the low state.
Iga Sayuri
Kamado Yasuhide
Kitamoto Shunji
Miyamoto Sigenori
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