Moderators: Calilasseia, ADParker
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This new 1.3 mm VLBI detection confirms that short-wavelength VLBI of Sgr A* can and will be used to directly probe the event horizon of this black hole candidate: in short, Sgr A* is the right object, VLBI is the right technique, and this decade is the right time.
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The campaign to capture the first-ever image of a black hole has begun.
From today (April 5) through April 14, astronomers will use a system of radio telescopes around the world to peer at the gigantic black hole at the center of the Milky Way, a behemoth called Sagittarius A* (Sgr A*) that's 4 million times more massive than the sun.
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Though the current observing campaign will be over soon, it will take a while for astronomers to piece together the images. For starters, so much information will be collected by the participating telescopes around the world that it will be physically flown, rather than transmitted, to the central processing facility at the Massachusetts Institute of Technology's Haystack Observatory.
Then, the data will have to be calibrated to account for different weather, atmospheric and other conditions at the various sites. The first results from the campaign will likely be published next year, EHT team members said.
Press Conference on First Result from the Event Horizon Telescope
1 April 2019
The European Commission, European Research Council, and the Event Horizon Telescope (EHT) project will hold a press conference to present a groundbreaking result from the EHT.
When: On 10 April 2019 at 15:00 CEST
Where: The press conference will be held at the Berlaymont Building, Rue de la Loi (Wetstraat) 200, B-1049 Brussels, Belgium. The event will be introduced by European Commissioner for Research, Science and Innovation, Carlos Moedas, and will feature presentations by the researchers behind this result.
What: A press conference to present a groundbreaking result from the EHT.
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Black hole shadow sizes were predicted to be about 50 microarseconds for #SgrA, 20-40 #M87 depending on mass, and smaller for other black holes. The resolution of the #EHT is at best 20 microarseconds with incomplete coverage. So, don’t expect anything like @Interstellar #Movie.
NSF press conference on first result from Event Horizon Telescope project
A global network of telescopes has been working to capture the first ever image of a black hole. On April 10 at 9 a.m. EDT, the National Science Foundation will hold a press conference to announce a groundbreaking result.
The Search for a Jet from Sgr A*
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What are the implications of our finding? Plenty, and here I offer one that is far-reaching. The orientation of G359.944-0.052 now clearly tells us about the orientation of the jet axis, which, interestingly, coincides with the rotation axis of the Galactic disk. As the jet axis most likely follows the SMBH's spin axis, we may infer that the angular momentum of the SMBH has been coupled to that of the entire Galaxy, perhaps over a long time comparable to the age of the Universe. It would be very interesting to figure out the exact means of this coupling. But above all we are eager to see whether future observations, such as those afforded by the Event Horizon Telescope, may verify (or disprove) our jet proposal.
Zhiyuan Li
aufbahrung wrote:It'll be Cthulhu or nothing.
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