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QPO as the Rosetta Stone for understanding black hole accretion

Journal article
Authors Marek A Abramowicz
Published in Astronomische Nachrichten
Volume 326
Issue 9
Pages 782-786
ISSN 0004-6337
Publication year 2005
Published at Department of Physics (GU)
Pages 782-786
Language en
Links dx.doi.org/10.1002/asna.200510413
Subject categories Physical Sciences, Astronomy, Astrophysics and Cosmology

Abstract

Quasi-periodic oscillations (QPO) seen in the X-ray fluxes of individual neutron stars and black hole sources are one of most intriguing phenomena in today's astrophysics. The QPO nature is visibly determined by super-strong Einstein's gravity. I argue here that it also profoundly depends on the MRI turbulence in accretion flows. Understanding the QPO physics may therefore guide accretion theory out of its present state of confusion. Readers will find here an up-to-date, comprehensible account of what is known, and what is not, about the QPO physics.

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