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Radiation Spectra from Advection-Dominated Accretion Flows in a Global Magnetic Field

Motoki Kino·Osamu Kaburaki·Naohiro Yamazaki
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Abstract

We calculate the radiation spectra from advection-dominated accretion flows (ADAFs), taking into account the effects of a global magnetic field. Calculation is based on the analytic model for magnetized ADAFs proposed by Kaburaki, where a large-scale magnetic field controls the accretion process. Adjusting a few parameters, we find that our model can well reproduce the observed spectrum of Sagittarius A$^{*}$. The result is discussed in comparison with those of well-known ADAF models, where the turbulent viscosity controls the accretion process.

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Motoki Kino, Osamu Kaburaki, Naohiro Yamazaki. 2000-02-01. Radiation Spectra from Advection-Dominated Accretion Flows in a Global Magnetic Field. https://doi.org/10.1086/308962

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