M87* Event Horizon Spectral Mapper

EHT Multi-Frequency Simulation
Cursor Slice: Center (0 μas)
Intensity I_ν: 1.00 Jy/pixel
Cross-Sectional Brightness Profile I_ν(θ) Slice across photon ring (μas)
Relativistic Parameters
Black Hole Spin ($a$) 0.94
Observer Inclination ($i$) 17°
Emission Ring Diameter 42 μas
Plasma Orbital Velocity Scrubber 0.82 c
Deterministic Observables
Shadow Diameter 41.8 μas
Flux Asymmetry Ratio 2.45
Peak Brightness Temp 6.2e9 K
Spectral Index (α) -0.72
Physics Context: Relativistic beaming brightens the approaching plasma (left), while strong light bending produces the dark central shadow bounded by the narrow photon ring. Switching to 345 GHz resolves finer sub-millimeter structure.
Blueshifted
Redshifted
Synchrotron