The Cosmic Lighthouse Has Switched ⚡ экспресс
Analysis of new observations of quasi-periodic eruptions (QPEs) from the Ansky object (a transient in the core of galaxy SDSS J1335+0728), carried out by the NICER instrument from January to June 2025, allowed comparison of flare properties with 2024 data. Compared to previous observations, the 2025 QPEs turned out to be four times more energetic, with a repetition period of about 10 days and individual flare durations ranging from 2.5 to 4 days — both parameters double last year's. The flare profiles became more asymmetric, with a prolonged decay phase. Theoretical scenarios explaining the observed changes are considered; the primary mechanism for the changing periodicity and energy is proposed to be an evolving interaction between a matter stream and the disk in an extreme mass-ratio inspiral (EMRI) system. Alternative models include mass transfer and accretion disk instabilities. Continued observational campaigns are necessary to unveil the nature of Ansky.
At the heart of a large galaxy lurks a giant black hole — a region from which not even light escapes. But sometimes, like a lighthouse, it gives off regular X-ray flares. In 2025, at the object Ansky, this lighthouse suddenly changed its signal: the gaps between flares grew from 5 to 10 days, but each flare became four times more energetic and lasts twice as long. The fading is now slower – as if the source doesn’t just switch off but smolders out.
The likely cause is a massive companion (a star or gas cloud) that grazes the spinning disk of superheated material around the hole. Under the effect of spacetime curvature, predicted by Einstein, this companion’s orbit is changing, and with it the rhythm of the signals. Perhaps we are witnessing the final loops before the star vanishes forever.
To crack the mechanics, astronomers will continue photometric measurements and spectral analysis of the radiation.
🎯 Although the flares repeat almost like clockwork, the interval between them can drift slightly, so they are called quasi-periodic (nearly periodic).
🎬 Stories about signals from extraterrestrial civilizations may come to mind, but here it's pure physics at work.