Table 1.
Parameters of our model.
| Symbol | Value | Property |
|---|---|---|
| M | 4.3 × 106 M⊙ | Compact object mass |
| D | 8.28 kpc | Compact object distance |
| a | 0 | BH spin parameter |
| r0 | 8 rg | Hot spot orbital radius |
| σr | rg | Hot spot Gaussian extension |
| ne0 | 2 × 106 cm−3 | Max number density of electrons |
| Te0 | 1011 K | Max electron temperature |
| B0 | 140 uG | Max magnetic field |
| η | 1 | Magnetization |
| κ | 4 | Index of κ electron distribution |
| i | [90 ° −180 ° ] | Inclination angle |
| λobs | 2.2 μm | Observing wavelength |
| f | 200 μas | Field of view |
| N × N | 128 × 128 | Image resolution |
Notes. The mass and distance to Sgr A* are from GRAVITY Collaboration (2020b, 2021). The orbital radius is close to that found by GRAVITY Collaboration (2018), Wielgus et al. (2022b). The density and temperature were chosen to ensure a 2.2 μm dereddened flux on the order of 10 mJy. The magnetic field is linked to the density through the assumption of Eq. (4) and is listed here for completeness. We note that the inclination angle i corresponds to the Boyer-Lindquist θ angle (illustrated in Fig. 3) of the observer. In the text, the complementary angle ι = π − i is often used.
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