By analyzing the velocity dispersion of the lensing galaxy, researchers estimate that dark matter constitutes about 11% of the mass within the Einstein radius of NGC 6505. This fraction ...

The misclassified lens has an Einstein radius below the range on which the algorithm is trained. We down-select the most reliable 56 candidates by a joint visual inspection. This final sample is ...

We train the networks to predict the five parameters of the singular isothermal ellipsoid profile: the Einstein radius, the complex ellipticity and the coordinates of the centre of the lens.

Albert Einstein had just published his General Theory ... were compressed into a sufficiently small sphere—a sphere with a radius R, which we now call the Schwarzschild radius.

you’ll see it fall slower and slower towards the Schwarzschild radius, but never actually reach. “Schwarzschild defined the key characteristics of a black hole, something that Einstein hadn ...