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4 panels showing various fundamental plane fits with data that mostly disagree.

High-Eddington Rate IMBHs Do Not Fall on the Fundamental Plane

Figure showing log of flux density in Jy as a function of log of frequency in MHz. The y-axis ranges from -4 to 1. The x-axis ranges from 3.0 to 4.75. The data from x = 3.0 to 3.505 are flat at about y = 0. The data from x = 3.505 to 4.6 are going down. The legend indicates that the source is IC 1459, that the low-frequency spectral index is -0.08 +/- 0.08, the high-frequency spectral index is 0.73 +/- 0.01, and the log of the turnover frequency is 3.55 +/- 0.022.

Turnover Frequency

Three-dimensional view of fundamental plane of black hole accretion. A cube is labeled with the following orthogonal axes and limits. X-axis: Radio [erg/s] 30–45; Y-axis: X-ray [erg/s] 30–45; Z-axis: Mass [solar] 0–15. A light blue plane cuts through data points which are clustered as red spheres at the high-mass end and blue cubes and cones at the low mass end.

Measuring black hole masses with X-ray and Radio observations

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