134 citations · 354 across the 6 of their papers we have counts for
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gr-qc2022★ 85 cited
Cosmological constant corrections to the photon sphere and black hole shadow radii
Stephen L. Adler, K. S. Virbhadra
We review the equations determining the photon sphere radius and the black hole shadow radius, and calculate the cosmological constant corrections arising when the dark energy acti…
gr-qc2022★ 134 cited
Distortions of images of Schwarzschild lensing
K. S. Virbhadra
We model the supermassive dark object as a Schwarzschild lens and study the variations in tangential, radial, and total (the product of tangential and radial) magnification…
gr-qc2022★ 11 cited
Compactness of supermassive dark objects at galactic centers
K. S. Virbhadra
We define compactness of a gravitational lens as the scaled closest distance of approach (i.e., ) of the null geodesic giving rise to an image. We model forty supermassive d…