New findings from Finnish scientists reveal something incredible: two black holes orbiting each other. This discovery marks the first time researchers have captured clear images of such a cosmic dance. The study was published on October 9 in the Astrophysical Journal.
Mauri Valtonen, an astronomer at the University of Turku, notes, “We managed to get an image of two black holes circling each other.” The black holes were located about 5 billion light years away, near a super bright galactic core known as OJ287, a quasar.
Quasars, incredibly luminous and powered by supermassive black holes, are fuelled when they pull in gas and particles. OJ287’s larger black hole has a mass nearly 18 billion times that of our sun, while its smaller counterpart weighs about 150 million solar masses. Such massive objects can create visible signals through the jets of particles they emit, allowing astronomers to detect them even from Earth.
What’s fascinating is that OJ287 emits light in a regular pattern, making it easier for even amateur astronomers to observe it. Valtonen shared that the brightness variations occur over a 12-year cycle, hinting at the presence of two black holes spiraling together.
This discovery isn’t entirely new. The quasar was accidentally observed in the 19th century when astronomers were looking for different celestial bodies. At that time, the idea of black holes was not even conceived. The concept of two black holes in a mutual orbit was suggested back in 1982 by student Aimo Sillanpää when he noticed the periodic brightness changes of OJ287.
To make their breakthrough, researchers utilized advanced radio telescope technology, including a satellite named RadioAstron, active from 2011 to 2019. This satellite’s unique capabilities allowed scientists to achieve unprecedented image resolution. Valtonen explained, “The satellite’s radio antenna extended halfway to the moon, significantly enhancing the image quality compared to Earth-based telescopes.”
However, there’s a catch. The two black holes might have overlapping jets, making it tricky to confirm their individual signatures. Nonetheless, researchers believe that with similar advanced imaging techniques, they can further validate the existence of both black holes in the future.
As we delve deeper into space, our understanding of these enigmatic objects continues to grow. The notion of black holes has transformed from sheer imagination to a fascinating reality, making discoveries like these crucial for our cosmic understanding.
For anyone interested in the mysteries of the universe, this finding not only highlights the sophistication of modern astronomy but also raises exciting questions for future studies. You can follow the developments in this area through trusted sources like Live Science to keep abreast of our cosmic explorations.
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