Tuesday , January 25 2022

Hubble, the most visible black hole in the open



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Arizona astronomers in the US used data from the Hubble Space Telescope to find about 12.8 billion years old quasar. The light emitted by the quasar is 600 trillion times the sun, the brightest of the quasars found in the history of astronomy. [사진 NASA/ESA]

Arizona astronomers in the US used data from the Hubble Space Telescope to find about 12.8 billion years old quasar. The light emitted by the quasar is 600 trillion times the sun, the brightest of the quasars found in the history of astronomy. [사진 NASA/ESA]

NASA's Hubble Space Telescope has discovered the brightest quasar in the history of astronomy. Brightness is up to 600 sunny days. The quasar is a black hole in the center of the galaxy that absorbs the surrounding substance with tremendous gravity and is known as the object emitting light. The official name of the quasar found is “J043947.08 + 163415.7” and is 128 billion years old. The results of the study led by Professor Shao Wu Fan of the University of Arizona in the United States appeared in the International Journal of Astrophysics.

Quasar is energetic enough to be described as "hunger". Experts explain that even when the star collapses, a black hole is created, but it is difficult to compare with the quasar in terms of mass and energy. "Quasar absorbs surrounding materials with gravity," said Professor Koo Bon-cheol, professor of physical astronomy at SNU Seoul National University. "Quasars absorb the surrounding materials," he said. . The original brightest quasar was discovered in February 2015, about 420 times brighter than the sun, but it was found that the quasar “J043947.08 + 163415.7” exceeds the record.

The quasar light that reaches the earth is so intense that it was discovered by the "gravitational lens effect". The effect of gravity lens is a phenomenon similar to light passing through a curved lens, which means that the light is bent and reinforced by the gravitational force emitted by the heavier mass. In fact, researchers say, "Galaxies exist between the quasars and the earth, and the galaxy causes gravity 50 times stronger," he said. "I could observe the quasar light, thanks to the zoom lens.

The Astronomical Community also draws attention to the age of J043947.08 + 163415.7. Given that the great explosion grew 13.8 billion years ago and that the universe was born, this quasar has been around one billion years since the birth of the universe. According to a senior researcher (KAIST) of the Astronomical Research Group at the Korean Astronomy and Space Science Institute, "It makes sense that the primitive universe, which has not yet been created, has a body of astronomy with so much energy. I can't explain yet," he explained.

The universe and the material therein were warmed up by a big bang, and the cooler that began about 380,000 years ago was affected by the "dark age". With this period, the galaxy and other bright galaxies began to form in the rionization process, and during this time a quasar was created.

Researcher Researcher Son Bongwon explained: "Since the originally created galaxies have interacted and evolved, such as merging with each other, they can help us explore what happened during this period." Researchers analyze the quasar light spectrum with a super-telescope (VLT) at the European Southern Observatory in the Atacama Desert, Chile. To study the chemical composition and temperature of the early universe, quasar materials emit different spectra of light.

Huh Jung Won reporter [email protected]

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