Interactive web tool to evaluate the Galactic magnetic field
(GMF) and to backtrack ultra-high-energy cosmic rays, using
the UF23 model ensemble [1].
x (kpc)
y (kpc)
z (kpc)
Galactic center at origin, Sun at x = −8.178 kpc, z-axis toward Galactic North.
Magnetic Field Components
Bx
0.00
μG
By
0.00
μG
Bz
0.00
μG
Model
Bx (μG)
By (μG)
Bz (μG)
longitude l (°)
latitude b (°)
1821
Keyboard: ← / → to adjust rigidity
Sky Map3D Trajectories
dimensionless target error as a fraction of the local Larmor radius rL
Adaptive Boris pusher: the step size is adjusted automatically to meet the target error (rtol), bounded by min/max step. Tracking stops when the galactocentric radius exceeds max radius or max steps is reached. Fixed-size stepping if min step = max step.