Right again, Einstein: New snapshot of 1st black hole to be photographed confirms relativity

The Event Horizon Telescope Collaboration has released new images of M87* from observations taken in April 2018, one year after the first observations in April 2017. The new observations in 2018, which feature the first participation of the Greenland Telescope, reveal a familiar, bright ring of emission of the same size as we found in 2017. This bright ring surrounds a dark central shadow, and the brightest part of the ring in 2018 has shifted by about 30º relative from 2017 to now lie in the 5 o’clock position.
The Event Horizon Telescope Collaboration has released new images of M87* from observations taken in April 2018, one year after the first observations in April 2017. (Image credit: EHT Collaboration)

In 2019, a team of scientists from the Event Horizon Telescope (EHT) Collaboration were the first to capture a close-up of a black hole.

Now, five years later, the team has released a new image of the black hole at the center of the galaxy Virgo A, dubbed Messier 87 (M87*).

Just like the first, these pictures show a dark shadow at the center of a bright golden ring. But the  brightness peak of the ring has shifted by about 30 degrees compared to the first shot, while the dark heart of the cosmic behemoth is unchanged.

These properties confirm Albert Einstein's theory of relativity, according to a study published on Jan. 18 in the journal Astronomy & Astrophysics.

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Relativity states that the laws of physics are the same no matter where you look in the universe. If true, this would mean that the diameter of M87*'s ring should remain the same from year to year as long as the black hole's mass has not changed — and that's exactly what the researchers found.

The black hole M87* is not consuming matter, also known as accreting, fast enough to increase its mass over the duration of a human lifetime. That means that the ring size remains mostly fixed, the researchers said.

However, the swirl of flattened, fast-moving gas, plasma and dust known as an accretion disk that surrounds the black hole is constantly changing.

"While general relativity says the ring size should stay pretty fixed, the emission from the turbulent, messy accretion disk around the black hole will cause the brightest part of the ring to wobble around a common center," study co-author Britt Jeter, a postdoctoral fellow at Academia Sinica Institute for Astronomy and Astrophysics, said in the statement. "The amount of wobble we see over time is something we can use to test our theories for the magnetic field and plasma environment around the black hole."

The first image of the black hole was captured using data collected prior to 2017, while this new shot uses data up until April 2018. To capture this image, scientists combined information from an array of telescopes, including several that were not used to snap the first photo, such as the Large Millimeter Telescope in Mexico and the Greenland Telescope.

"The inclusion of the Greenland Telescope in our array filled critical gaps in our earth-sized telescope," study co-author Rohan Dahale, a doctoral candidate at the Institute of Astrophysics of Andalusia  in Spain, said in the statement. "The 2021, 2022, and the forthcoming 2024 observations witness improvements to the array, fueling our enthusiasm to push the frontiers of black hole astrophysics."

Kiley Price
Contributor

Kiley Price is a former Live Science staff writer based in New York City. Her work has appeared in National Geographic, Slate, Mongabay and more. She holds a bachelor's degree from Wake Forest University, where she studied biology and journalism, and is pursuing a master's degree at New York University's Science, Health and Environmental Reporting Program.

  • Daemonnice
    Lol, I find these statements regarding Einstein being proven right once again to be the stuff of pseudo science, or at the very least, they are unscientfic. For one, claiming these high energy objects as Black Holes is speculation and to date, empirically unprovable or even testable. But that's ok, you're just supposed to have faith in the math. Faith?

    Einstein derived his general theory of relativity with the mistaken assumption that et space is devoid of everything, that the ponderable bodies of our solar system are isolated by space and time which he reified. The last 60 years has shown this to be wrong, therefore, if we follow the rule of, 'if P then Q, if not Q then not P' as laid out by Karl Popper, then this incorrect assumption of Einstein's can be considered unto itself an invalidation of his gtr.
    Not good enough for you.
    When Vera Rubin observed 65% of mass missing in galaxies as predicted by the model of gravity as the fundamental force of celestial objects, it should have been considered an invalidation of said model. Instead, out of confirmation bias, they invented a hypothetical dark matter which no one can detect thus failing their burden of proof. That is essentially pseudo science at it best. Such a failure to predict is an invalidation of gravity as the fundamental force of the cosmos, and as such it makes Einstein's gtr irrelevant.
    Karl Popper in his seminal work said it matters not how many proofs you have, all it takes is one invalidation to disqualify a theory. Here I have presented two, but science writers seem to ignore these scientific truths for their beliefs. Is that science?
    So, Einstein is not right again, gravity is not the fundamental force of et space, no black holes, neutron stars, gravitational lensing, as all these speculative claims were made on the back of a failed theory.
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