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What do black holes look like? We'll find out soon.

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What do black holes look like? We'll find out soon.

Old 04-04-19, 05:19 PM
  #1  
Seattle Forrest
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What do black holes look like? We'll find out soon.

​Of all the weird stuff that exists in the universe, such as quasars, pulsars, magnetars, neutron stars, red giants and white dwarfs, one of the most bizarre, and the “holy grail” for scientists to image, is the black hole. Black holes were first identified in Einstein’s theory of general relativity. These gravitational monsters create a gravity well so deep and so steep that they consume everything near them. The gravity is so intense that even light can’t escape. While science already knows quite a bit about black holes, and have posited that one exists at the center of our galaxy since the mid 1970s, there have never been any photographs of black holes. After all, how can you photograph something that sucks in all the light around it?

The answer? Look for the event horizon.
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Old 04-04-19, 06:54 PM
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Very cool. Thanks for posting this. More details on the April 10 press conference at space.com.


Related press conferences will also occur simultaneously in Brussels; Santiago, Chile; Shanghai; Taipei, Taiwan; and Tokyo, according to the NSF advisory. The speakers at these various events include some heavy hitters, such as Carlos Moedas, the European commissioner for research, science and innovation; James Liao, president of the Academia Sinica; European Southern Observatory Director General Xavier Barcons; and Atacama Large Millimeter/submillimeter Array Director Sean Dougherty. The advisory doesn't state what the April 10 announcement will be, but the above information suggests it's a pretty big deal.
It will be hard to top the recent Trek announcement that changed everything, but let's hope for a good image of the event horizon.
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Old 04-04-19, 11:49 PM
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What is on the other side?
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Old 04-05-19, 10:14 AM
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Originally Posted by Hondo Gravel View Post
What is on the other side?
Truman
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Old 04-05-19, 10:43 AM
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Originally Posted by Hondo Gravel View Post
What is on the other side?
Jim Morrison.
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Old 04-05-19, 12:50 PM
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Don't get your hopes up that it'll be something discernable as an object. I'd expect it'll be more like a reverse black & white image with just a void space in the center that has no twinkling stars.

Then again, maybe they'll find that Malaysian Airlines jet that went missing a few years ago? Maybe DB Cooper? Norwegian explorer Roald Amundsen? Amelia Ernhart? Probably not Jim Morrison; he'd be exposing himself to the camera if he knew we were watching.
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Old 04-05-19, 02:52 PM
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Originally Posted by skidder View Post
Don't get your hopes up that it'll be something discernable as an object. I'd expect it'll be more like a reverse black & white image with just a void space in the center that has no twinkling stars.
.
Not if they boost the levels, apply some NR and some gaudy HDR filter.
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Old 04-06-19, 09:43 PM
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I saw The Black Hole in 1979...

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Old 04-06-19, 10:04 PM
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I expect the most interesting result would not be the quality of the image, but rather the estimate of the size of the event horizon. Perhaps they will also report results for M87. Just 4 more days...
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Old 04-06-19, 10:23 PM
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Originally Posted by Rollfast View Post
I saw The Black Hole in 1979...

Damn, I missed that one.....my friends and I must have been distracted by this box office loser......



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Old 04-07-19, 05:46 AM
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I saw the Blackholes numerous times back in the day





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Old 04-07-19, 09:04 AM
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44

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Old 04-10-19, 07:30 AM
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Old 04-10-19, 07:55 AM
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Originally Posted by skijor View Post
hahahahaha
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Old 04-10-19, 09:40 AM
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So, after watching the press conference, only results for M87 so far, analysis is in progress for our black hole, Sagittarius A*. The initial image and set of papers is really a proof of concept, they demonstrated that they can image a black hole, and expanding the number of telescopes, and taking measurements at higher frequencies will result in better images in the future. They also mention variability in the M87 black hole over time. I think the key takeaway is that this opens up a new methods for research on blackholes and gravity more generally, perhaps leading to better theories of quantum gravity, and ultimately to answering questions like "What is space-time?"
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Old 04-10-19, 12:57 PM
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Originally Posted by Rollfast View Post
I saw The Black Hole in 1979...

I saw Event Horizon in theaters. Hated it. I went to see a science fiction movie (I paid to see a science fiction movie!), and they ambushed me with a horror flick
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Old 04-10-19, 12:58 PM
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Originally Posted by GailT View Post
It will be hard to top the recent Trek announcement that changed everything,
???
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Old 04-10-19, 01:15 PM
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Originally Posted by RubeRad View Post
I saw Event Horizon in theaters. Hated it. I went to see a science fiction movie (I paid to see a science fiction movie!), and they ambushed me with a horror flick
Preach it, RubeRad. I think I even went to see it the day it came out. Hated it. I have tried to watch it again since then when it comes up on TV, but it's just intolerable.
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Old 04-11-19, 07:35 AM
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Did you see the size of that thing? (That's what she said!)

6.5 BILLION times the mass of our sun. The event horizon spans significantly more space than our entire solar system!

https://imgs.xkcd.com/comics/m87_bla...comparison.png
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