X-Ray Timing in 1E 1740.7-2942 and GRS 1758-258
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- November 1997
- DOI:
- 10.1086/310963
- Bibcode:
- 1997ApJ...489L..51S
- Keywords:
-
- ACCRETION;
- ACCRETION DISKS;
- BLACK HOLE PHYSICS;
- X-RAYS: STARS;
- Accretion;
- Accretion Disks;
- Black Hole Physics;
- X-Rays: Stars