Hiding in Plain Sight: A Nearby Neutron Star ⚡ экспресс
A new candidate for a nearby neutron star has been discovered — the J2354 system, where an invisible compact object has a mass of 1.4–1.6 solar masses. It could be either a massive white dwarf or a neutron star. To tell them apart, astronomers analyzed brightness variations, accounting for tidal deformation of the star and spots on its surface. The model with hot spots fits the observations better, and a white dwarf cannot produce such strong localized heating. But the energetic winds of a neutron star easily explain it. It seems J2354 hides a neutron star — possibly one of the closest to Earth.
A star 300 light-years away dances with an invisible partner. One side of the star heats up more than the other, as if the unseen dancer is breathing a hot wind onto it. This partner is a neutron star—a city-sized cinder so dense a teaspoon of its matter outweighs Mount Everest. Its fierce particle wind, focused by a magnetic field a trillion times stronger than Earth's, creates a glowing hot spot on the facing surface.
Neutron stars form when massive stars explode as supernovae. Spotting one nearby helps track ancient blasts that scattered rare elements, like iron-60 in ocean floors. Astronomers detected this hidden partner through measurements of the star's wobble and splitting its light into a rainbow. Focusing on a specific hydrogen glow revealed the hot spot. The pattern points to a neutron star wind; a white dwarf (another stellar corpse) can't produce the heating without extra energy. First predicted by Fritz Zwicky in 1934, neutron stars were discovered by Jocelyn Bell Burnell in 1967 as pulsing radio signals.
🎯 Despite being only about 20 kilometers across, a neutron star can spin hundreds of times per second—faster than a kitchen blender.
🎬 In the sci-fi novel 'Dragon's Egg,' life evolves on a neutron star's surface under crushing gravity.