Table 1.
Parameters of our model.
| Symbol | Value | Property |
|---|---|---|
| M | 6.2 × 109 M⊙ | Compact object mass |
| D | 16.9 Mpc | Compact object distance |
| a | {0.01, 0.94} | BH spin parameter |
| α = tanθop | {0.1, 1} | Disk opening angle |
| ne; H | circ/thin {1.5, 5} | Max density of electrons |
| rad/thin {5, 20} | ||
| circ/thick {0.7, 2} | ||
| rad/thick {2, 10} | ||
| Te; H | 1011 K | Max electron temperature |
| σ | 0.01 | Magnetization |
| i | 160° | Inclination angle |
| νobs | [230, 345] GHz | Observing frequency |
| f | 100 μas | Field of view |
| N × N | 20 000 × 20 000 | Image resolution |
Notes. The maximum electron number density varies across models in order to ensure an observed flux of ≈0.5 Jy at 230 GHz. It is expressed in units of 106 cm−3, with the first and second numbers referring to BH spins of a = 0.01 and a = 0.94, respectively. The models are labeled as follows: “circ” means “circular rotation” (Sect. 2.2.1), “rad” means “radial infall” (Sect. 2.2.2), “thin” refers to a disk with opening-angle parameter α = 0.1, and “thick” to a disk with α = 1.
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