The Hard X-ray States Of The Giant Micro-Quasar NGC 4151

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

We present a comprehensive spectral analysis of all INTEGRAL observations of NGC 4151 together with RXTE, Swift, XMM and Suzaku data. Plasma and reflection parameters could be constrained separately and determined with an unprecedented accuracy. The geometry of the Comptotnisation cloud could be studied. A close and a distant reprocessing region are disentangled. The spectral variability favors a hot inner accretion flow and a cold outer disc with spectral states and a geometry similar to that inferred in black-hole binaries.

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