A team of researchers from Japan ’s National Astronomical Observatory ( NAOJ ) is claiming that thegroundbreaking imageof the supermassive black hole at the center of our galaxy is not precise .
The original image of Sagittarius A * was manufacture from information take by the Event Horizon Telescope Collaboration , which revealed the picture to the public in May 2022 . It showed our galaxy ’s central ignominious hole as an ominous black swarm surrounded by a ring of spark — the hole ’s accumulation magnetic disc . In its paper , the late team propose that the the object is more likely to have an stretch disk . The teampublishedits proposed black muddle structure in the Monthly Notices of the Royal Astronomical Society .
The 2022 image of the black hollow depicts a four - million - solar - mass behemoth called Sagittarius A * . It is the first image of the object at our galaxy ’s core and the Event Horizon Telescope ( or EHT ) ’s second black maw figure . The EHT ’s first black hole image — the first - ever — depicted the black fix Messier 87 ( M87 ) , andpublished in 2019 .
The first-ever image of Sagittarius A, the supermassive black hole at the center of our galaxy.Image: EHT Collaboration*
Black holes are region of spacetime with gravitative field of honor so vivid that not even illumination can escape them at a sure distance . That aloofness is the smutty cakehole ’s issue view . There is a field of glowing superheated matter around the case apparent horizon : the accretion phonograph record . The squad ’s recent newspaper publisher sharpen on the accretion disk of Sagittarius A * , which they arrogate has a unlike shape than previously thought .
The EHT is a large radio lookout station made up of a electronic web of radio telescopes . EHT information break the black hole — an inherently invisible object , because luminousness does not break loose the effect sensible horizon — in its silhouette against a background of its accretion disk .
“ We hypothesise that the halo image resulted from errors during EHT ’s imagination analysis and that part of it was an artefact , rather than the actual astronomic social organization , ” said Miyoshi Makoto , an astronomer at the NAOJ and co - author of the composition , in a Royal Astronomical Societyrelease .
A radio image of Sagittarius A according to the recent team. Image: Miyoshi et al.*
In its study , the squad analyzed the same 2017 information on which the EHT Collaboration built its black hole paradigm . But the team used a different method acting of analysis than the coaction , indicating an elongated accretion disk compared to the doughnut structure run across in the 2022 ikon .
The recent squad contends that the smuggled mess ’s accretion record is stretch . In other words , it has a unlike structure than the ring - like disc fancy in 2022 . The M87 black hole also appear to have a band - like pattern in the EHT prototype , which a later team develop into a polarized image of the object , fill out withthe social organisation of its charismatic fields .
In August , the EHT publisheda novel methodby which they improved the telescope ’s resolving power , suggest at sharper images of black pickle in the approximate future . Should they come after through , future observation could elucidate the actual social organization of Sagittarius A * .
Even further down the route , a outer space - based mission to improve the distinctness of EHT images may plunge . The commission concept describe a $ 300 million probe of black holes ’ photon rings — is called theEvent Horizon Explorer .
amend our understanding of the cosmos ’ most extreme surroundings — the surroundings that foster black holes , neutron stars , andcollisions of those two objects — will yield insight into the gravitational universe , as well as the core of our own coltsfoot .
AstrophysicsBlack holesEvent horizonThe Milky Way
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