Powerful telescopes can spot the 'Photon Ring' of the first imaged black hole

re is a high possibility that faint photon rings surrounding black holes could be captured with future generations of telescopes. first-ever im of a black hole was captured in April 2019 by Event Horizon Telescope. It was black hole M87, which is approximately 55 million light-years away from Earth. Researchers and viewers spotted a faint doughnut-shaped glow around singularity. 

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Black Hole and its Photon Ring

It is a well-kwn fact that a black hole’s gravity is so intense that few light particles called Photons circle black hole partway or sometimes once, twice or multiple times before y escape it and are picked up by telescopes. Those orbiting photons are what researchers call ‘Photon Rings’. se Photon Rings constitute a series of subrings or circles of light which appear to be getting successively thinner, hence, are harder for telescopes to pick out. Michael Johnson, who is an astrophysicist from Harvard-Smithsonian Center for Astrophysics, stated in an interview with a portal that photon rings around black holes look like hall of mirrors, and telescopes pick up an infinite series of ims like se.

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Black Hole and Telescopes

Event Horizon Telescope, also kwn as EHT, combines powers of telescopes located across world. EHT uses a technique called very long baseline interferometry. This technique helps to operate like one, larger telescope. 

Hence this telescope becomes infinitely more powerful and useful for capturing celestial objects and events alike. However, researchers need to d telescopes separated by even larger distances to optimise ir us and capture even clearer and distant ims. A team of researchers revealed in an interview given to a science portal in March 2020 that a rio telescope orbiting Earth could be capable of capturing first subring around a black hole. 

Source: NASA

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However, witnessing second subring would require an even more distant telescope, perhaps on moon. third subring could possibly be detected with a telescope even farr away from moon, approximately 1.5 million kilometres from planet Earth. All of se plans might sound ambitious at first but a team of astrophysicists and researchers are alrey working to come up with telescopes that can increase visibility of farr celestial objects and phemens.

Researcher Johnson stated in his interview that his team is planning to make more ditions to Event Horizon Telescope. Although EHT won’t be able to directly photograph photon rings or even subrings, it might be able to detect ir existence.  detection itself would reaffirm Einstein’s ory of gravity and general ory of relativity, which predicts of photon rings’ existence. In dition, it will be like getting a step closer to get better measurements of black hole’s mass and possibly also kw how fast it is spinning.

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first im of blackhole:

More than 50 million light-years away from earth is Messier 87, a giant galaxy which stands in an elliptical shape. Black Hole M87 is located at centre of Messier 87 and is a gargantuan beast. On April 10, 2019, scientists were able to capture a faint im of M87 with help of a planet-sized network of telescopes. M87 is a supermassive black hole and as per scientists, it contains mass of 6.5 billion suns. im captured by scientists was actually merely silhouette of Black Hole.

Source: NASA