Light-Ring Stability for Ultracompact Objects – Emanuele Berti
What is the ring of orange light around the picture of the black hole? - Quora
All Black Holes Should Sport Light Rings | Inside Science
Imaging a Black Hole | PhysicsCentral
Universal interferometric signatures of a black hole's photon ring
New telescopes may help spot 'photon ring' of first black hole imaged | Science News
There Are Infinite Rings of Light Around Black Holes. Here's How We Could See Them
A Black Hole's Lunch Provides a Treat for Astronomers - The New York Times
Physics - Illuminating Black Holes through Turbulent Heating
Astronomers Spot Unusual, Enormous Rings Around a Black Hole
Press Release (April 10, 2019): Astronomers Capture First Image of a Black Hole | Event Horizon Telescope
This weird black hole is bending light back on itself like a boomerang | Space
Astronomers Spot Unusual, Enormous Rings Around a Black Hole
There Are Infinite Rings of Light Around Black Holes. Here's How We Could See Them
The ring around the black hole glitters | Max-Planck-Gesellschaft
Einstein ring helps weigh a black hole | Science Wire | EarthSky
All Black Holes Should Sport Light Rings | Inside Science
Mysterious swirling light gives new insights into black holes | Black holes | The Guardian
First photo of a black hole supports Einstein's theory of relativity - CNN
Black hole pictured for first time — in spectacular detail
:no_upscale()/cdn.vox-cdn.com/uploads/chorus_image/image/63395084/blackhole_gif.0.gif "The very first image of a black hole, explained by 2 astrophysicists - Vox")
The very first image of a black hole, explained by 2 astrophysicists - Vox
Scientists Predict Countless Rings of Light Encircle Black Holes - Sky & Telescope - Sky & Telescope
A new theorem predicts that stationary black holes must have at least one light ring
