The supernova is seen exploding at three different times; watch

Images captured by the Hubble Space Telescope show a star exploding at three different times. The information was published in hubblesite and depicts a supernova dating back to about 11 billion years ago. The photo portrays the moment from when it begins to when it disappears, thanks to a gravitational lens present in the light path between the telescope and the explosion.

The idea of ​​gravitational lensing was first predicted with Albert Einstein’s theory of general relativity. In a nutshell, he describes that mass can bend space-time and that light follows this bending. What Hubble captured was a very distant supernova whose light was bent and magnified by a huge cluster of galaxies in front of it.

The deformation caused by the supernova also contributes to different images of the explosion arriving at different times here on Earth. This happened because the magnified images took different paths and also because of the effect of gravity on the deceleration of time.

The captured event lasted no more than a week and the images also show the slight color change from the explosion. The first stage was bluer and turned redder until it ran out. The results could help uncover how stars and galaxies formed in the early universe, and they’re impressive for showing a supernova at the very beginning, which usually happens quite quickly.

“It is very rare that a supernova can be detected at a very early stage, because this stage is very short. It only lasts from a few hours to a few days and can easily be missed even by close detection. In the same exposure, we can see a sequence of images, like the multiple faces of a supernova,” comments Wenlei Chen , of the School of Physics and Astronomy of the University of Minnesota and lead author of the study, about the revelation

The discovery of the supernova

The discovery of this supernova took place thanks to a group of researchers who were sifting through the Hubble archives in search of transient events. Algorithms have been written to find other events similar to this one, but only this supernova was detected at different stages. The group’s goal is to continue looking for supernovae much further away than this one and now they will count on the help of the James Webb Telescope to find out if there is a difference between today’s stars and those that existed billions of years ago.

The study also calculated the size of an already dead star for the first time. The calculations were made based on the luminosity and cooling rate of the supernova, both of which depend on the size of the parent star. It was estimated to have been red and super giant, 500 times larger than the sun.
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Source: Olhar Digital