GRS 1758–258 with INTEGRAL and RXTE: Another Dim Soft State

The Galactic Center black hole candidate (BHC) GRS 1758-258 has been observed extensively within INTEGRAL'S Galactic Center Deep Exposure program in 2003 and 2004, while also being monitored with RXTE. We present quasi-simultaneous PCA, ISGRI, and SPI spectra from four GCDE observation epochs. During the first epoch GRS 1758-258 displayed another of its rare dim soft states like the one observed in 2001. In the recently emerging picture of the hardness-intensity evolution of black hole transient outbursts in which hard and soft states are observed to occur in a large overlapping range of luminosities (hysteresis), the dim soft state is not peculiar.