X-Ray Timing in 1E 1740.7-2942 and GRS 1758-258

Details X-Ray Timing in 1E 1740.7-2942 and GRS 1758-258 X-Ray Timing in 1E 1740.7-2942 and GRS 1758-258

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...489l..51s&link_type=abstract

Astrophysical Journal Letters v.489, p.L51

Physics

34

Accretion, Accretion Disks, Black Hole Physics, X-Rays: Stars

Scientific paper

We report on deep observations of the Galactic bulge sources 1E 1740.7-2942 and GRS 1758-258 with the Rossi X-Ray Timing Explorer. These objects form a class of two, showing radio jets, very hard spectra, and persistent emission. Here we show that their power spectra are also similar: flat-topped noise, breaking to a power law, with a pair of weak, harmonically spaced quasi-periodic oscillations above the break and an integrated rms variability of ~20%. We discuss to what extent these results can be considered support for the identification of both as black hole candidates.

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