A sweep of 26,000 stars has found a composition that shows nothing else. The combination of its bizarre components is expected to be matched if they are made from SMS J200322.54-114203.3 a kind of explosion that astronomers have theorized but never seen, known as a magnetic-rotating hypernova. As the name implies, hypernova are stronger than supernovas and express about 10 times more energy. These are very rare, but have been observed in a few quite distant galaxies.
Hopefully this Carina will give us a ringside view one day. Chiaki Kobayashi of the University of Hertfordshire has developed a specific type of hypernova model. In nature now Kobayashi and a team from the Australian National University have announced the discovery of a star that has risen like a phoenix from the remnants of a similar phenomenon in the Milky Way hollow.
SMS J200322.54-114203.3 was identified as abnormal as part of the Skymapper survey. Its chemical composition has four unusual properties. Known processes can explain each of them, but they require something new to hold them together. On the other hand, fast-moving stars all around fit perfectly with the expected product that began in the early days of the Milky Way and then went into hypernova. The time is characterized by a relatively low concentration of iron relative to hydrogen, in J200322.54-114203.3, 3,000 times less than that of the Sun, since iron is produced by fusing carbon into high-mass stars, and is then distributed through the galaxy after the star dies. , The only star in the early part of his galaxy could be anemic.
Already J200322.54-114203.3 is rich in heavy elements such as uranium and zinc. These are thought to produce only two processes in the supernova explosion and neutron star attachment. Since the first observations of neutron star attachment in 2017, these phenomena have become a favorable explanation for many astronomers for most of the heavy metals in the universe, but the authors of the new study believe that the spectral fingerprint seen here is really a huge supernova much closer than expected. Veteran author, Nobel Prize-winning Professor Brian Schmidt says, “High zinc abundance is a definite sign of a hypernova.
