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Magnetic Coupling of a Rotating Black Hole with Advection-Dominated Accretion Flows

Yong-Chun Ye·Ding-Xiong Wang·Ren-Yi Ma
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Abstract

A model of magnetic coupling (MC) of a rotating black hole (BH) with advection- dominated accretion flow (MCADAF) is proposed. It turns out that MCADAF providers a natural explanation for the transition radius between ADAF and SSD, and could be used to interpret the highest luminosity of GX 339-4 in hard-state. A very steep emissivity index can be produced in the innermost part of the MCADAF,which is consistent with the recent XMM-Newton observations of the nearby bright Seyfert 1 galaxy MCG-6-30-15 and with two X-ray binaries (XRBs): XTE J1655-500 and GX 339-4. In addition, we estimate the BH spins in Seyfert 1 galaxy MCG-6-30-15 and in the two XRBs based on this model.

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Yong-Chun Ye, Ding-Xiong Wang, Ren-Yi Ma. 2007-01-29. Magnetic Coupling of a Rotating Black Hole with Advection-Dominated Accretion Flows. https://doi.org/10.1016/j.newast.2007.01.004

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