Parker Spiral Magnetic Field Calculator
Heliospheric physics & space weather: Model Eugene Parker’s Archimedean magnetic spiral, radial and azimuthal Interplanetary Magnetic Field ($B_r, B_\phi$), spiral winding angle ($\psi$), and total field magnitude ($B$).
Solar Wind & Radial Distance
Earth = 1.0 AU, Mars = 1.52 AU, Parker Solar Probe ~0.05 AU
Slow wind: 300–450 km/s; Fast wind: 600–800 km/s
Solar Source Surface Field
Typical quiet-sun 1 AU radial field: 3–4 nT
Sidereal period ~25.4 days (Ω_☉ ≈ 2.86 × 10⁻⁶ rad/s)
Interplanetary Magnetic Field (IMF) Output
Total Magnetic Field |B|:
--
nanotesla (nT)
Spiral Winding Angle ψ:
--
degrees from radial direction
Radial Component B_r:
--
nT (∝ 1/r²)
Azimuthal Component B_ϕ:
--
nT (∝ 1/r)
| Distance in Kilometers: | -- |
| Solar Wind Travel Time from Sun: | -- |
| Ratio |B_ϕ / B_r|: | -- |
| Field Topology Regime: | -- |
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