The dense remains of big stars are neutron stars. They are the star-forming supernova explosions’ collapsing cores.
Although we largely understand how they develop, we are still learning about how they change throughout time, especially when they are young.
Large sky surveys, however, have made it possible for astronomers to see a neutron star that may be only a few years old, signaling that this is beginning to change.
VT 1137-0337 is the designation of the relevant neutron star. It was discovered in 2018 as part of the Very Large Array Sky Survey and is located in a dwarf galaxy 400 million light-years from Earth (VLASS). A radio map of the sky is being made as part of the seven-year VLASS project. Over the course of three different runs, it will have successfully mapped around 80% of the sky.
It first observed VT 1137-0337 in 2018, and it observed the neutron star once more in 2019, once more in 2020, and once more in 2022. So, we are certain that it is not only a brief radio burst of some type.
The item is most likely a pulsar wind nebula, according to measurements. The neutron star’s magnetic field and energy beams pass through the surrounding nebula as it rotates, ionizing the gas and causing it to generate radio waves.
It’s noteworthy to note that VT 1137-0337 was missed by the Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) VLA sky survey, which was conducted in 1998. The neutron star so emerged sometime between 1998 and 2018.
(Dong & Hallinan, NRAO/AUI/NSF)