Violent death of red supergiant observed for the first time (VIDEO)

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Researchers at the University of Northwest and the University of California at Berkeley observed the star, ten times the size of the Sun, during the 130 days before the explosion. Located in the galaxy NGC 5731, approximately 120 million light-years from Earth, the star SN 2020tlf has challenged theories of how red supergiants behave just before their collapse. Final moments. Precursor emission, envelope enlargement, and increased mass loss preceding the luminous type II supernova 2020tlf. They were believed to have been relatively quiet before their death, with no evidence of violent eruptions or luminous emissions. The new observations, however, detected bright radiation from the star in its final year. Scientists observe for the first time the explosion of a dying star. Astronomers observed the star for 130 days. The red supergiant is 10 times the mass of the Sun and is located approximately 120 million light-years from Earth in the galaxy NGC 5731. The University of Hawaii Institute of Astronomy’s Pan-STARRS telescope first detected the massive star in 2020 thanks to the huge amount of light emitted by the red supergiant. A few months later, the supernova lit up the sky. This activity suggests that at least some of these stars must undergo significant changes in their internal structure, which give way to the tumultuous expulsion of gas, moments before their collapse. Jacobson-Galán commented that it is “a major advance in understanding what happens to massive stars moments before they die”.