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How to Use the Relativistic Jets & Doppler Beaming 3D Explorer
Open the Relativistic Jets & Doppler Beaming 3D Explorer, drag the two sliders, and watch the approaching jet brighten while the receding jet fades - computed live from the exact Doppler-beaming formulas.
- Open https://freetoolonline.com/space-3d/relativistic-jets-agn.html and wait for the black hole, the accretion disk, and the two bipolar jets to render.
- Drag the Lorentz factor slider (Γ = 1.01 to 15) to set how fast the jet plasma moves.
- Drag the viewing angle slider (θ = 1 to 90 degrees) to set the angle between the jet axis and your line of sight.
- Click "M87" to load the real VLBA-estimated values (Γ=10.9, θ=17 degrees) for the M87 jet.
- Click "Blazar-like" to see the extreme one-sided beaming a small viewing angle produces.
- Read the facts panel for the computed Doppler factors, the flux ratio between the two jets, and the apparent transverse speed.
Key published figures
| Figure | Value |
|---|---|
| M87* black hole mass | about 6.5 billion solar masses (EHT Collaboration 2019) |
| M87 jet viewing angle | about 17 degrees (VLBA studies) |
| M87 jet intrinsic Lorentz factor | about 10.9 (inner jet) |
| M87 HST-1 knot apparent speed, measured | 6.3 +/- 0.4c (Snios et al. 2019) |
Next: the when guide or vs alternatives. Open the Relativistic Jets & Doppler Beaming 3D Explorer.
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