Presets
Gravitational Lensing
parallel rays bend & refocus
The Photon Shadow
capture vs. escape, side by side
Photon Sphere
light loops the critical orbit
Perihelion Precession
an ellipse that slowly rotates
Innermost Stable Orbit
the edge between orbit & plunge
Accretion Disk
a swirl of orbits feeding the hole
Gravitational Lensing
Speed
1.0×
Zoom
1.00×
Trail length
900
Event horizon
Photon sphere
ISCO ring
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Run
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rₛ (horizon):
1.0
Photon sphere:
1.5 rₛ
ISCO:
3.0 rₛ
λ (affine steps):
—
—
Watch
trails trace true Schwarzschild geodesics
Bright core
— the event horizon, r = rₛ
Inner ring
— the photon sphere, r = 1.5 rₛ
Outer ring
— the ISCO, r = 3 rₛ