Magnetized Accretion Inside the Marginally Stable Orbit around a Black Hole

Details Magnetized Accretion Inside the Marginally Stable Orbit around a Black Hole Magnetized Accretion Inside the Marginally Stable Orbit around a Black Hole

1999-02-18

arxiv.org/abs/astro-ph/9902267v1

Astronomy and Astrophysics

Astrophysics

to appear in Ap. J. Letters

Scientific paper

10.1086/311979

Qualitative arguments are presented to demonstrate that the energy density of magnetic fields in matter accreting onto a black hole inside the marginally stable orbit is automatically comparable to the rest-mass energy density of the accretion flow. Several consequences follow: magnetic effects must be dynamically significant, but cannot be so strong as to dominate; outward energy transport in Alfven waves may alter the effective efficiency of energy liberation; and vertical magnetic stresses in this region may contribute to "coronal" activity.

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