![]() ![]() ![]() We are looking at M87 almost face on, which I referred to as a 90 0 angle. Most of my explanations above refer to the M87 central black hole, not Andromeda's which I mistakenly referred to. This is a similar link regarding the news, but without the same "simulated" picture. The link I posted was a google search of the Andromeda central black hole, What I originally saw, not too long ago, was probably observations and simulations combined, involving the word "preliminary." Some ground grouping of radio scopes have looked at Andromeda and have made tentative observations of its central black hole but that was not what I was mistakenly referring to. We are looking at Andromeda at maybe a 35 0 to 40 0 angle, which makes it more difficult to observe its details and its central black hole than M87, but not as difficult as our own galactic black hole which we are trying to look at edge on, while looking through the galactic disc - sounds even harder to me. So I'm a bit of a loss to understand why you mentioned a donut-shaped photon ring in Andromeda. This link says that a supermassive black hole has been detected in Andromeda, but gives no information about images of its photon ring. The photon rings of stellar mass black holes in Andromeda would not be visible, even to the EHT. Stellar mass black holes in M31, the Andromeda galaxy and the Event Horizon Telescope image of the supermassive black hole in M87, that was discovered in 2019. Sorry to be awkward Pantheory, but your link seems to give results that fall into two categories. Like I said above, if we could look at our central black hole from above or below our galaxy, which we cannot do, it would likely look more like Andromeda's central black hole. For Andromeda we are able to look from a much better perspective angle. The surrounding light that we see is probably on the top and bottom of the doughnut. Yes, what we are seeing is part of the photon sphere but not like the one we observed in Andromeda because we are looking at a side view of a doughnut shaped object. NGC 5128 or NGC 4438) but also in the heart of the Milky Way (Sgr A *). They would have been tidally disrupted by the black hole's immense gravity far outside the limits of the image we are seeing.įinally, the theory of Luminet and Carter was confirmed by the observation of spectacular eruptions resulting from the accretion of stellar debris by a massive object located in the heart of the AGN (e.g. Gases can deform, be compressed or be stretched by Sag A*'s gravity because they have no internal structure to lose.īut stars are spheres of differentiated, increasingly dense plasmas held together by mutual gravitational attraction. Because they are quantum-scale objects photons do not 'feel' the gravitational shearing forces that gravitationally-bound collections of molecules (i.e., stars) would. Therefore, those three bright regions cannot be the locations of stars, but are more likely knots of gas forming standing waves in the accretion disk, just before they disappear over the event horizon. I'm by no means an expert here, but if memory serves what we are seeing is what's called the photon ring (or photon sphere in 3D) of Sag A*. But I guess their announcement could be of another large radio wave emitter in our galaxy, which could be even more surprising. It is unexpectedly a "picture" of our own galaxy's central black hole Sagittarius A, which would be a visual image made from radio waves. Astronomical objects that have a changing magnetic field can produce radio waves such as galactic black holes and polar jets coming from them.įor the Event Horizon scopes, such a big planned announcement event about the Milky Way would need to be something that has never been seen before. These radio scopes collectively could picture of our galactic black hole as a circular glowing disk with a doughnut hole center like the picture they took of Andromeda galaxy's central black hole in 2019. This radio-scope consists of a large array of radio-scopes around the world working in synchronicity via computers and image collecting devices. With a name like the Event Horizon telescope, they have distinguished the event horizon of Andromeda galaxies large central galactic black hole and are working on observing the huge central black hole of our own galaxy called Sagittarius A.
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