Are you one of the authors of this paper? Email us from your institutional or work email address mentioning this article's arXiv ID and we'll verify you and give you edit access to this page.
Euclid is a dark energy hunter, but its nets snagged 164 supernovae and their secrets.
Abstract
In the first public dataset from the Euclid space telescope, scientists found 161 previously known transients (flashes like supernovae). By matching coordinates with the Transient Name Server catalog, they measured objects' infrared brightness (I_E, Y_E, J_E, H_E bands) at different stages of their lives. About 70% of transients brighter than 24th magnitude within half a year before imaging were captured. Particularly remarkable are the early detection of a type Ia supernova 15 days before peak and the late phase (436 days later) of a mysterious core-collapse supernova. Like a detective with a photo album, Euclid reconstructs the history of these cataclysms and finds their host galaxies even for previously "orphan" flashes.
Links in the knowledge graph 1
📄 Showing the "Simple" version — "Popular" is not ready yet. Add it to favorites to help prioritize it.
The Euclid space telescope works like a security camera in a dark hangar: its job is to catch traces of an invisible force, тёмной энергии, that warps the universe. But instead, it spotted 164 bright sparks — сверхновые, explosions of dying stars. Scientists measured their glow in different colors (фотометрию) and saw something unexpected.
One supernova was caught 15 days before its peak, in the infrared range, where no one expected it. Another, defying the usual script, shone 436 days after the explosion, when other telescopes had already lost sight of it. Euclid’s infrared lens cuts through cosmic dust like a flashlight through fog, revealing галактики that were previously thought invisible — it’s precisely in them that these flashes were hiding.
Now, as the telescope begins surveying vast swaths of sky, the count of discoveries will soar into the thousands. The dark energy hunter is turning into a chronicler of stellar catastrophes.
🎯 Deep images from Euclid reveal galaxies where supernovae exploded, in places where ground-based telescopes saw only emptiness — as if a camera suddenly unveils an invisible house.
