Slow-Spinning Magnetar Defies Physics With Pulsing Radio Beams
Deep within the dense star fields of the Scutum constellation, an object known as GPM J1839-10 has shattered the established consensus regarding the life cycles of neutron stars. While most magnetars—the most magnetic objects in the known universe—are defined by their frenetic, high-energy rotations, this singular entity behaves with a glacial, rhythmic patience that astrophysicists previously deemed impossible. For decades, the "death line" theory suggested that once a magnetar’s rotation slows beyond a certain threshold, its capacity to generate radio emissions should cease entirely. GPM J1839-10, however, continues to broadcast powerful, recurring radio pulses every 22 minutes, operating deep within the territory where the laws of stellar physics suggested silence should reign. Magnetars are the remnants of massive stars that have collapsed under their own gravity, compressing a solar mass of material into a sphere roughly the size of a city. Th...