Angular Radius of Einstein Ring Calculator

The deformity of the light from the star is called as the Einstein ring. The radius of an Einstein ring is known as the Einstein radius. It is a usual angle for gravitational lensing.

Calculate the Angular Radius of Einstein Ring

Calculator
Formula

The deformity of the light from the star is called as the Einstein ring. The radius of an Einstein ring is known as the Einstein radius. It is a usual angle for gravitational lensing.

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Formula:

θ² = (4GM / c²) * ((d_s-d) / (d_s*d)) Where, θ = Ring Angular Radius G = Constant of Gravitation M = Lens Mass c = Speed of Light d_s = Distance from Observer to Source d = Distance from Observer to Lens