High Energy2026-01-211 minarXiv:2601.15452expressMagnetar Polarizes X-rays Up to 47%Neutron stars are ultra-dense remnants of supernovae the size of a city. In the 1930s, Fritz Zwicky hypothesized their existence, and later Jocelyn Bell Burnell discovered pulsars — rapidly rotating neutron stars.Roberto Taverna·Roberto Turolla·Lorenzo Marra·Ruth M. E. Kelly·Alice Borghese·Gian Luca Israel·Sandro Mereghetti·Andrea Possenti·Silvia Zane·Michela RigoselliAdam RiessAlbert EinsteinCharles Townesmagnetarneutron starpulsarNeutrino oscillationneutron star merger👍👎☆SimplePopularAdvanced