Astronomers have discovered a supernova – an astronomical event that occurs during the later stages of a star’s life – twice brighter than anything previously found in the universe: dying stars are found every night but most of them are in vast galaxies, according to a team from the University of Birmingham.
According to the British website “Daily Mail”, astronomers believe that the explosion was caused by the merging of two giant stars in an event known as the “pulsating instability of couples”, the first time that astronomers have seen it, in a galaxy 4.6 billion light years away.
The team found that the explosion, named SN2016aps , He had five times the strength of a supernova, and was almost ten times larger.
This type of supernova caused by the fusion of massive stars existed only previously as a theory, but these observations show that it is a true phenomenon.
The lead author of the study, Dr. Matt Nicole, from the University of Birmingham, said that the supernova is measured using two scales – the total energy of the explosion and the amount of energy released as a observable light or radiation.
He added: “In a typical supernova, radiation is less than one percent of the total energy, but in SN2016aps , We found that the radiation was five times the energy of a supernova explosion of normal size, and this is the most light we ever see emitted from a supernova. “
In order for the supernova to become this massive brightness, experts say the explosion was much more active than what would normally be seen from an explosive star.
The team discovered that the explosion was supported by a collision between a supernova and a huge shell of gas, thrown by a star in the years before its explosion, and the explosion was so bright that it overwhelmed anything else – which makes it appear to be standing alone in the universe – rather than a galaxy Huge.
“We were only able to see the galaxy in which this star was born after the light faded,” said co-author of the study, Dr. Peter Blanchard from Northwestern University in the United States.
Astronomers observed the explosion for two years until the dying star faded to one percent of its peak brightness, and using these measurements, they calculated the mass of the supernova that was 50 to 100 times greater than our sun.