When a star dies, it usually undergoes a huge explosion. For nearly a thousand years, a similar incident was a puzzle in front of astronomers and it is believed that it has now been solved. Actually, according to Nature Astronomy, the Crab Nebula was born after an explosion in a star, but this event was not caused by a star explosion or a thermonuclear explosion in a white dwarf star, but there was a third way, about which the attempt to know about it remained. is.
A new kind of explosion?
Now scientists from the University of California have discovered a new type of supernova, which has been named – electron capture – about which not much evidence was found so far. Reports say that in 1054 AD, there was a glimpse of light which may have originated from the super-asymptotic giant branch (SAGB) category.
How does this supernova happen?
In 1980, the University of Tokyo gave the theory of a third type of supernova. In this, it was said to be supernova in such stars whose cores contain oxygen, neon and magnesium. The electrons present in it collided with the nucleus of the core, which was named electron-capture. When the electrons were released, the core of the star would collapse under its own weight and explode.
Where did you find the evidence?
Scientists believe that they have found evidence of the third category in the 2018zd supernova explosion in the NGC-2146 Galaxy, 31 million light years away from Earth. The discovery was made by Daiichi Hiramatsu, a graduate student at the University of California, Santa Barbara. Based on the kind of features found in this explosion and its chemical composition, it is believed to be an electron capture supernova.
[Attribution to NBT]