Millihertz oscillations near the innermost orbit of a supermassive black hole
Nature, Published online: 05 February 2025; doi:10.1038/s41586-024-08385-xA millihertz frequency X-ray quasi-periodic oscillation has been observed near the innermost orbit of an actively accreting supermassive black hole and its frequency has evolved significantly over 2 years, a phenomenon that is difficult to explain with existing models.
![Millihertz oscillations near the innermost orbit of a supermassive black hole](https://media.springernature.com/m685/springer-static/image/art:10.1038%2Fs41586-024-08385-x/MediaObjects/41586_2024_8385_Fig1_HTML.png)
Nature, Published online: 05 February 2025; doi:10.1038/s41586-024-08385-xA millihertz frequency X-ray quasi-periodic oscillation has been observed near the innermost orbit of an actively accreting supermassive black hole and its frequency has evolved significantly over 2 years, a phenomenon that is difficult to explain with existing models.