Sentences with phrase «example of a gravitational lens»

Decades passed before astronomical technology verified that idea: It wasn't until 1979 that astronomers detected a real - life example of a gravitational lens in the double image of a quasar — side - by - side glimpses of a galaxy's blazing heart, resembling a pair of oncoming headlights.

Jackson and colleagues used the Karl G. Jansky Very Large Array, in New Mexico, US, to study four examples of gravitational lens systems where the background quasar appears in a ring of four, distorted images.

Not exact matches

Since the discovery of the first gravitational lens in 1979, astronomers have in fact seen innumerable examples.

For example, the powerful gravitational field of a massive cluster of galaxies can bend the light rays from more distant galaxies, just as a camera lens bends light to form a picture.

The basic steps of a visual search for gravitational lenses are: (1) prepare the images, (2) display them to an inspector, (3) record the inspector's classification of each image (as, for example, containing a lens candidate or not) and (4) analyse that classification along with all others to produce a final candidate list.