Photon sphere
id:
photon-sphere-164-10794205
title:
Photon sphere
text:
A photon sphere or photon circle arises in a neighbourhood of the event horizon of a black hole where gravity is so strong that emitted photons will not just bend around the black hole but also return to the point where they were emitted from and consequently display boomerang-like properties. As the source emitting photons falls into the gravitational field towards the event horizon the shape of the trajectory of each boomerang photon changes, tending to a more circular form. At a critical valu
brand slug:
wiki
category slug:
encyclopedia
description:
High-gravity spherical region of spacetime around which light and thus photons travel in orbits
original url:
https://en.wikipedia.org/wiki/Photon_sphere
date created:
2005-11-03T20:43:13Z
date modified:
2024-08-29T02:20:50Z
main entity:
{"identifier":"Q2361910","url":"https://www.wikidata.org/entity/Q2361910"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/2/27/Black_Hole_Shadow.gif","width":1280,"height":720}
fields total:
13
integrity:
16