(LDO)- The most powerful, largest-ever corpse of a giant star, a real cosmic monster, has been found by US scientists.
J0740 + 6620, a strange object 4,600 light-years from Earth, has surprised scientists. It is the largest, densest and most powerful neutron star ever discovered, a veritable monster of the universe.
Neutron stars are the “ghosts” of giant stars, small but one of the most powerful in the universe. At the end of a star’s life, it will explode into a supernova, and then all that’s left will be condensed into a supermassive and powerful object known as a neutron star.
According to a collaborative research team of many institutes and schools in the US led by astronomer Thankful Cromartie from the University of Virginia, J0740 + 6620 has a width of about 25 km, a small size compared to other cosmic objects but larger. far more than any neutron star ever discovered, which is only about 19 km. For a neutron star, that’s enough for scientists to say it should be “too big to exist”.
Although it seems small, but the other object is heavier than… 2.14 times the sun, or about 700,000 times our earth. The object pushes astronomical theory to a new limit of how massive and dense an object can exist in the universe without being engulfed by its own gravity and collapsing into a black hole. So this neutron star has great significance for astrophysics.
J0740 + 6620 was detected by a companion white dwarf star, which accidentally passed through the space between J0740 + 6620 and Earth, causing the star’s pulses to fluctuate. J0740 + 6620 was observed by the Greenbank Observatory in Virginia. Although it emits powerful energy, you will not be able to find it with the naked eye in the sky, because not only is J0740 + 6620 too far away, it is also a pulsar, which can only be seen through electromagnetic waves. it escapes through, through specialized telescopes.
The study has just been published in the scientific journal Nature Astronomy