Euclid Telescope: Waking Dormant Supermassive Black Holes in Europe
- Virtually every major galaxy has a supermassive black hole at its core, a gravitational behemoth weighing millions or even billions of suns. Most of them just doze off...
- A small fraction of supermassive black holes hungrily swallow meaningful amounts of matter, and very energetic jets of matter and radiation erupt in thier vicinity.
- A new data set recently brought this dispute to a resolution thanks to the European Space Telescope Euclid.
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Galactic Collisions trigger Active Black Holes, Euclid Telescope Reveals
What are supermassive Black Holes and Active Galactic Nuclei?
Virtually every major galaxy has a supermassive black hole at its core, a gravitational behemoth weighing millions or even billions of suns. Most of them just doze off and occasionally watch material that gets too close to the event horizon. But there are also exceptions.
A small fraction of supermassive black holes hungrily swallow meaningful amounts of matter, and very energetic jets of matter and radiation erupt in thier vicinity. They are the engine of active galactic nuclei (AGN), which shine like giant beacons in space. Scientists have been arguing for decades about what actually triggers the transformation of quiescent supermassive black holes into frantically active monsters.
Galactic Collisions as a Cosmic Wake-Up Call
A new data set recently brought this dispute to a resolution thanks to the European Space Telescope Euclid.
when galaxies come close and collide, it’s not like a car crash. Galaxy material is sparse and galaxies tend to blend together. But at the same time, the collision unleashes gravitational chaos, moving cosmic gas, dust, and even stars, often over great distances.Some of the material reaches the galaxy’s supermassive black hole.A massive accretion disk is formed, through which matter flows towards the black hole, and the galactic core becomes intensely luminous.
Previous Research and Limitations
scientists have been speculating about a similar scenario for a long time. However, older studies only worked with a limited number of galaxies, and the images were often not of sufficient quality to reliably detect both ongoing collisions and fainter active nuclei. That changed with the advent of the Euclid telescope.
The Euclid Telescope: A New Era of observation
The Euclid space telescope,which went into space two years ago,appears to be extremely powerful. Part of its equipment is a 600 megapixel sensor for recording visible light, supplemented by a spectrometer and a photometer for the near infrared region. In just one week, Euclid took high-quality images of the universe from a larger area than the Hubble telescope managed in more than thirty years of observation.
AI-Powered Data Analysis
In order to effectively use this huge amount of data, scientists from the Dutch institute SRON have developed a new tool based on artificial intelligence. it can “decompose” images of galaxies into their individual components and reveal AGNs that would remain completely hidden by other methods. At the same time, it makes it possible to measure their energy output very accurately.
How Galactic Collisions Fuel Black Hole Activity: A Detailed Look
The process by which galactic collisions activate supermassive black holes is complex