Discovering new gravitational lenses using AI/Descubriendo nuevas lentes gravitacionales usando IA

in science •  4 years ago 


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As we have already commented on other times, Albert Einstein's general theory of relativity postulates how the fabric of space-time deforms before the accumulation of mass and energy, which explains the force of gravity that keeps us glued to the ground, holds the Earth in its orbit around the Sun or creates supermassive black holes.

Como ya hemos comentado otras veces, la teoría general de la relatividad de Albert Einstein postula como el tejido del espacio-tiempo se deforma ante la acumulación de masa y energía, lo que explica la fuerza de gravedad que nos mantiene pegados al suelo, sujeta la Tierra en su órbita alrededor de Sol o crea agujeros negros supermasivos.

Another phenomenon derived from this deformation of the space-time fabric are "gravitational lenses", these lenses are produced when a very bright and distant object, such as a quasar, located just behind a massive object such as a galaxy or cluster of galaxies, located between said object and the observer, becomes visible by the curvature of the light.

Otro de los fenómenos derivados de esta deformación del tejido espacio-temporal son las "lentes gravitacionales", estas lentes se producen cuando un objeto muy brillante y lejano como puede ser un quásar situado justo detrás de un objeto masivo como una galaxia o cúmulo de galaxias, situado entre dicho objeto y el observador, se vuelve visible por la curvatura de la luz.


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This phenomenon predicted by Einstein was verified by Sir Arthur Eddington in 1919, measuring the position of distant stars during a total solar eclipse and checking this position at night when the light from these stars is not affected by the gravity of the Sun and verifying that his position was certainly slightly different.

Este fenómeno predicho por Einstein fue comprobado por Sir Arthur Eddington en 1919, midiendo la posición de las estrellas lejanas durante un eclipse total de sol y comprobando esta posición durante la noche cuando la luz de estas estrellas no se ve afectada por la gravedad del Sol y verificando que ciertamente su posición era ligeramente distinta.

Due to this peculiarity of relativity, these lenses can be used as telescopes for the observation of very distant objects or even the detection of extrasolar planets through gravitational microlenses and are crucial to understand dark matter or calculate the expansion speed of the universe.

Debido a esta particularidad de la relatividad estas lentes pueden utilizarse como telescopios para la observación de objetos muy lejanos o incluso la detección de planetas extrasolares a través de microlentes gravitacionales y son cruciales para entender la materia oscura o calcular la velocidad de expansión del universo.


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But it seems that it is really difficult to discover this type of lenses to the point that only a few hundred of them have been detected using existing methods, luckily once again artificial intelligence is helping scientists to locate many of these lenses by applying machine learning to previously obtained data.

Pero parece que resulta realmente difícil descubrir este tipo de lentes hasta el punto de que tan solo se han detectado unos cientos de ellas utilizando los métodos existentes, por suerte una vez más la inteligencia artificial está ayudando a los científicos a localizar muchas de estas lentes aplicando machine learning a los datos obtenidos con anterioridad.

Using the data obtained by other telescopes and other cutting-edge devices and applying machine learning algorithms on them, a group of astronomers have managed to discover 1,200 new gravitational lenses, approximately double those that had been discovered for decades by conventional methods.

Utilizando los datos obtenidos por otros telescopios y otros dispositivos de vanguardia y aplicando sobre ellos algoritmos de machine learning un grupo de astrónomos han conseguido descubrir 1200 nuevas lentes gravitacionales, aproximadamente el doble de las que habían sido descubiertas durante décadas por métodos convencionales.

More information/Más información
https://scitechdaily.com/doubling-the-number-of-known-gravitational-lenses-using-artificial-intelligence/

https://nuevoperiodico.com/duplicar-el-numero-de-lentes-gravitacionales-conocidos-utilizando-inteligencia-artificial/

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Hola @mauromar , entonces ahora es cuando comenzaran a revisar estrellas y planetas muy lejanos, hacer este trabajo debe ser como aburrido e interesante a la vez.
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According to sources, In general relativity light follows the curvature of space-time. So when crossing a huge object the light becomes curved.

Perhaps it should be noted that the most common form of matter in the universe is plasma. Two interesting properties of plasma are 1) Light is red shifted when travelling through it. 2)Light is refracted when passing through plasma.

The fact that light is refracted throws a spanner into the works for Dark Matter as plasma likely contributes to gravitational lensing and estimates for the amount of mass present. Plasma may be there but produce no synchrohtron radiation.

as usual I always get knowledge when reading your posts, thank you for sharing knowledge.

Thanks for your comment my friend.

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