The universe is an endless expanse of mystery, dignity, and stunning sights. So why is the universe airing a few years later the “re-execution” of the supernova explosion we already saw in 2016?
The faint glow of the 10 billion-year-old ancient explosion, known as the supernova Requiem, is expected to reappear in the sky around 2037, even after the same light source has already smiled three times on NASA’s Hubble Space Telescope in 2016. I am.
The reason for this space rerun has nothing to do with the supernova itself, the study was published in the journal on September 13th. Nature Astronomy As suggested, in a huge cluster of galaxies, the light of a nova must pass along the way. Earth..
“Whenever light passes near a very large object such as a galaxy or cluster of galaxies, the distortion of space-time EinsteinGeneral theory Theory of relativity It tells us that it exists in every mass and slows the movement of light around that mass, “said Steve Rodney, an assistant professor at the University of South Carolina in Colombia. Said in a statement..
This phenomenon is called a gravitational lens. This effect occurs when gravity causes a giant object to distort or lens the light of a distant star or galaxy behind it. Enlarge the light Distort distant objects, and sometimes it. In the case of the supernova Requiem, researchers say that a large cluster of galaxies, MACS J0138, brightens the light of a star’s explosion, proliferates, divides it into several different images, and appears to appear at different points in the sky at different times. Said.
When astronomers first discovered Requiem in the Hubble image of the 2016 MACS cluster, supernovae appeared simultaneously in three different locations around the edge of the cluster. Researchers have shown that the three different images differ in brightness and color, suggesting that the supernova showed three different stages of the supernova as it darkened and cooled over time.
A follow-up image of the cluster taken in 2019 confirmed that all three light spots were completely extinguished, all mirror images of the same distant light source. Since then, researchers have learned that light originates from about 10 billion ancient supernovae. Light year From Earth, the star in question, means that it lived and died within the first 4 billion years thereafter. big Bang..
However, a closer look at the MACS cluster revealed that the Supernova Requiem magic show wasn’t over yet. The light passing through the exact center of the cluster is still pinballed by the strong gravity of the cluster and has not yet appeared on the side facing the Earth.
In their new study, researchers used computer models to map galaxy clusters. Dark matter — A mysterious and invisible substance that makes up most of the matter in the universe and acts as an adhesive that binds large galaxies together. Using this map, the team predicted the various routes that light from the supernova Requiem could pass through the cluster of galaxies on its way to Earth, and how dark matter affects its arrival.
Researchers have calculated that light passing through the center of the most dense cluster of dark matter should appear above Earth in 2037. (A supernova may also appear for the fifth time in 2042, but its light will be so dim that astronomers may not be able to see it at all, the team added).
According to Rodney, this is the “very long” delay between the first and last appearance of light, the longest ever observed from a multilens supernova.
When the long-awaited new star reappears in the sky, astronomers will be able to measure the exact time difference between all four supernova images, following the gravity-distorted path that the dying star’s light had to pass through. You will be able to understand better. Ultimately, the authors conclude that this could give researchers more clues about the nature of dark matter. So stay calm and don’t touch the dial. The rebroadcast of the supernova Requiem is worth a look.
Originally published in Live Science.
Research on new dark matter predicts that a 10 billion-year-old supernova will soon be regenerated in front of us.
Source link Research on new dark matter predicts that a 10 billion-year-old supernova will soon be regenerated in front of us.