Indian astronomers followed a rare supernova explosion and made it one of the hottest stars. They are very luminous objects a thousand times superior to those of the Sun. They are called Wolf Rayet Stars and they are very energetic explosions.
A team of astronomers from the Aryabhatta Research Institute of Observational Sciences in Nainital, Uttarakhand, along with international collaborators, conducted optical surveillance of one of these stripped-down supernovae. According to the Ministry of Science and Technology, the supernova was called SN 2015dj. The supernova was hosted in the galaxy NGC 7371 which was spotted in 2015.
One of the hottest stars
Astronomers have calculated the mass of the star that collapsed to form the supernova and the geometry of its ejection. The study was published in The Astrophysical Journal. Scientists also discovered that the original star was a combination of two stars, one of them being a huge WR star and another star much less in mass than the Sun. Supernovas are high energy explosions in the Universe releasing a huge amount of energy. Long-term monitoring of these transients opens the door to understanding the nature of the star’s explosion as well as the explosion properties. It can also help count the number of massive stars.
Likewise, NASA shared an image of a striking bluish-green supernova on St. Patrick’s Day that formed after a massive star exploded in a nearby galaxy called the Little Magellanic Cloud. X-rays in haunting green, a symbolic color for the Irish rebellion on St. Patrick’s Day, were emitted nearly 200,000 light years into the Milky Way satellite galaxy, according to NASA. In an Instagram post, the space agency wrote that a cosmic explosion hatched the debris field, creating greenish radiation in a spectacular display of vibrating filaments.