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- W2526698545 abstract "Standard accretion disk theory predicts that the total pressure in disks at typical (sub-)Eddington accretion rates becomes radiation pressure dominated. However, radiation pressure dominated disks are thermally unstable. Since these disks are observed in approximate steady state over the instability timescale, our accretion models in the radiation-pressure-dominated regime (i.e., inner disk) need to be modified. Here, we present a modification to the Shakura & Sunyaev model, where the radiation pressure is in equipartition with the gas pressure in the inner region. We call these flows accretion in radiative equipartition (AiRE) disks. We introduce the basic features of AiRE disks and show how they modify disk properties such as the Toomre parameter and the central temperature. We then show that the accretion rate of AiRE disks is limited from above and below, by Toomre and nodal sonic point instabilities, respectively. The former leads to a strict upper limit on the mass of supermassive black holes as a function of cosmic time (and spin), while the latter could explain the transition between hard and soft states of X-ray binaries." @default.
- W2526698545 created "2016-10-07" @default.
- W2526698545 creator A5004813032 @default.
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- W2526698545 date "2017-06-27" @default.
- W2526698545 modified "2023-09-25" @default.
- W2526698545 title "Accretion in Radiative Equipartition (AiRE) Disks" @default.
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- W2526698545 doi "https://doi.org/10.3847/1538-4357/aa73d4" @default.
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