June 8, 2023


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Astronomers have immortalized the Einstein ring.  Help the Hubble Space Telescope

Astronomers have immortalized the Einstein ring. Help the Hubble Space Telescope

The gravity of distant objects can cause the curvatures of spacetime which can be surprisingly useful in the context of space observation. This is known as a gravitational lens, and one example of this is what is called a gravitational lens. Einstein’s ring.

We managed to grab it In work with the Hubble Space TelescopeWhich immortalized an almost perfect ring with bright spots on its edges. And although there are six of them, this does not mean that we see six galaxies in the image. In fact, there are three of them, and on the back is a quasar whose light is also distorted. This is because – as it moves towards the observer – it is exposed to the gravitational influence of two galaxies.

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Such phenomena can be of great support to astronomers, who are able to study even the most distant objects in the universe. Interestingly, almost any object with a sufficiently large mass can produce gravitational lenses. The strength of this lens depends on the curvature of the gravitational field, which is directly related to the mass around which the lens is bent.

Einstein’s ring consists of a phenomenon known as gravitational lensing

In the case of less distant objects, for example near or in the Milky Way, the so-called microlensing is called. With it, you can find orbs that will be too dark to be seen in any other way. One example of this is the presence of a stellar-mass black hole.

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Interestingly, researchers looking for exoplanets are able to classify even isolated planets that do not orbit any stars. As a result, these types of objects are too dark and cannot use the common method of transportation. Of course, a fine lens helps, which ensures a sufficiently large magnification of these exoplanets.

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