Next up, there’s the cloud of dust and gas itself, called an accretion disk. The bubble of darkness that this edge abuts is the actual singularity. The curved edge of superheated gas we see defines a singularity’s outer limit, the black hole’s event horizon beyond which escape is impossible. In reality, it’s a kind of negative image - an object defined by its absence. Black hole boilerplateįirst off, there’s the black hole itself, the sphere or void at the center of any black hole image. You can think of this as a black hole boilerplate, and it contains a few key components. To get around these issues while maintaining some sort of aesthetic sensibility, many space artists have opted for a kind of idealized black hole image. The most blindingly bright of these are called quasars, and they are indeed hard to miss. Some betray their presence with powerful jetes of matter thousands of light-years long, though their hearts often remain hidden. Thick dust clusters around many active black holes, shrouding their forms. This means that quiet black holes, those that aren’t sucking up gas or other matter, are effectively invisible.Īnd for those that are snacking on matter, called active black holes, it’s no straightforward task either. By definition, a black hole is a region of space where no light escapes. There’s another reason that drawings of black holes take some degree of liberty, one that’s staggeringly obvious: You can’t see a black hole. Also, Albert Einstein’s theory of general relativity tells us that spacetime bends in weird ways near a black hole - a fact not usually accounted for by artists. First, black holes are so far away that the picture will probably be much blurrier than most artistic representations show. We’ll likely know the truth soon, though it won’t necessarily look anything like what we may have come to expect. As EHT member Katie Bouman puts it in a TEDx talk, there could be an elephant at the center of our galaxy for all we know. The reality, however, is that we don’t actually have any confirmation. So, we have a pretty good idea of what a black hole might look like. All of those pictures are artistic representations based, sometimes loosely, on theories about what physics tells us a black hole should look like. Black sphere, colorful spiral of gas … don’t we already know what a black hole looks like? Cosmic elephantsīut, images of black holes have been circulating for years, right? Magazines, including this one, routinely run pictures of black holes alongside stories - you probably already have a mental image of what I’m talking about. It will be the first time humanity has actually seen one of the massive objects with our own eyes, and scientists are understandably excited about what the image will tell them. Researchers with the Event Horizon Telescope (EHT) have scheduled a press conference for the morning of April 10, and they’re expected to unveil an image of a supermassive black hole. We’re probably going to get our very first actual picture of a black hole next week.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |