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Scientists prepare to observe cosmic reproduction of a supernova explosion

BingMag.com Scientists prepare to observe cosmic reproduction of a supernova explosion

The light of the supernova supernova explosion, observed in 2016 by the Hubble Space Telescope and showing a dying star, passes through the center of a The gravitational lens will be seen in the sky again in 2037.

The universe is an endless expanse of mystery, grandeur and spectacular scenery. Scientists have now noticed another rare phenomenon from the point of view of the terrestrial observer. The world is replaying a supernova explosion observed by Hubble in 2016.

Cosmic replay of a supernova

The faint glow of an ancient 10 billion-year-old explosion known as "Supernova Requiem" to be seen in the sky again around 2037. Even though its light source is similar to what Hubble saw in 2016.

According to an article published in the September 13 issue of Nature Astronomy, the cause is This cosmic repetition has nothing to do with the supernova itself, but with the vast cluster of galaxies that supernova light must pass through to reach Earth. Steve Rodney Steve Rodney, an assistant professor at the University of South Carolina, said of the phenomenon: "When light passes close to a massive object such as a galaxy or galaxy cluster, the space-time curvature that exists according to Einstein's theory of general relativity for any object delays light travel." .

BingMag.com Scientists prepare to observe cosmic reproduction of a supernova explosion

Hubble image of a galaxy cluster MACS J0138 and a comparison of the Requiem supernova sightings of 2016 and 2019
Credit: NASA/Joseph DePasquale

He takes the galaxies behind him, or in a robe A ray of light passes them through a gravitational lens. This phenomenon sometimes magnifies the light of distant objects and sometimes distorts them. Which apparently appear in the sky at different times.

Magical representation of the requiem supernova

In 2016, when astronomers first observed the image of the requiem through the MACS J0138 galaxy cluster, the supernova It appeared simultaneously at three different points around the edge of the galaxy cluster. According to the researchers, these three different images are different in terms of brightness and color, and indicate that they show three different stages of the supernova that decrease and cool over time.

In the next image of this cluster, which Taken in 2019, all three dots disappeared completely, confirming that they were all mirror images of the same light source. Researchers have since discovered that the observed light comes from an ancient supernova, located 10 billion light-years from Earth. This means that the star in question, whose life ended with a supernova explosion, lived and died in the first 4 billion years of the universe.

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But a closer look at MACS J0138 reveals that the magical supernova display of Requiem is not over. The light that passes right through the center of the galaxy cluster is still trapped by the cluster's intense gravity and still has a long way to go to Earth.

BingMag.com Scientists prepare to observe cosmic reproduction of a supernova explosion

MACS J0138.0-2155 Galaxy Cluster Field
SN1, SN2 and SN3 Position of the observed image in 2016, 2019 and past From the lens and SN4 and SN5 predict the position of its future image. H1 to H4 show the image of the supernova host galaxy seen through a multiple gravitational lens.
Credit: Rodney et al.

Modeling Dark Matter

In their new study, the researchers used a computer model to plot the dark matter of a galaxy cluster. The mysterious and invisible substance that makes up most of the matter in the universe and is the main factor in keeping large galaxies together.

  • Download the map of the entire universe with The Most Accurate Modeling of Dark Matter

With this map, the research team can predict the various paths that supernova light requires to pass through a galaxy cluster to reach Earth, and how dark matter affects it. The researchers found that light passing through the center of the cluster, where dark matter has the highest density, should be seen in the Earth's sky by 2037 (1416 solar) and last for two years. The supernova may also appear for the fifth time in 2042, but this time its light will be so dim that astronomers may not be able to see it at all.

This is an unusually long delay between the first and last It is, in fact, the longest delay seen from a multi-lens supernova.

After a supernova reappears in the sky, astronomers can tell the exact time difference between all four images. Measure the Requiem supernova explosion and better understand the complex gravitational path that light from a dying star must pass.

A topic that could eventually lead to more clues. Give researchers the nature of dark matter. So we have to wait for this spectacular cosmic replay.

Cover Photo: Graphic Design of a Supernova Explosion Near Blue Planets Credit: Muratart/Shutterstock

Source: Live Science

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