Reflection Spectroscopy of the Black Hole Binary XTE J1752-223 in its Long-Stable Hard State

Understand

We present a detailed spectral analysis of the Black Hole Binary XTE J1752-223 in the hard state of its 2009 outburst.

• Regular monitoring of this source by RXTE provided high signal-to-noise spectra along the outburst rise and decay.
• During one full month this source stalled at $\sim$30\% of its peak count rate at a constant hardness and intensity.
• By combining all the data in this exceptionally-stable hard state, we obtained an aggregate PCA spectrum (3-45 keV) with 100 million counts, and a corresponding HEXTE spectrum (20-140 keV) with 5.8 million counts.