Sleeping Neutron Star Roars Back to Life: The Mystery of Supercritical Accretion
Автор: One Voice Universe
Загружено: 2025-12-14
Просмотров: 7
Описание: Astronomers tracked a sleeping neutron star in the galaxy NGC 7793, revealing how its X-ray glow and spin speed evolved from 2011 to 2024. After a faint phase in 2021, the star brightened again in 2022 and reached luminosities 100x higher by 2024. A key finding is that the star’s rotation acceleration doubled during the 2022 rebrightening, suggesting a link between X-ray luminosity and how fast the star spins. The team proposes that changes in the height of the accretion column may drive the observed 10-year flux modulation, offering important clues toward understanding supercritical accretion around neutron stars. This video explains the concepts of accretion, pulsations, and how long-term measurements help us test theories about extreme physics in the universe.
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![The Insane Science of Neutron Stars [4K]](https://image.4k-video.ru/id-video/qX6h72IyKSo)
