|
|
Post by zippy on Apr 10, 2019 17:29:44 GMT
I'm tempted to nit-pick and say that, be definition, it cannot be a picture of the actual black hole, but rather the surrounding material.
but I won't, because it's such a mind-blowing feat to produce an image of anything at that distance..
I wonder why it's brighter at the bottom than the top ?
|
|
|
|
Post by jandl100 on Apr 10, 2019 18:10:29 GMT
I wonder why it's brighter at the bottom than the top ? Rotation, apparently. The part heading toward us is brighter, something to do with relativity, don't ask me what! The simulated/prediction image I posted earlier in the thread also showed it. Clever bugger, that Einstein guy.  |
|
|
|
Post by jandl100 on Apr 10, 2019 18:17:58 GMT
.... it's such a mind-blowing feat to produce an image of anything at that distance.. I saw it somewhere as being equivalent to seeing the dimples on a golf ball from across the breadth of the USA - over 2,600 miles. I'm not sure how many olympic swimming pool lengths that is.  |
|
|
|
Post by jandl100 on Apr 10, 2019 18:34:37 GMT
I'm tempted to nit-pick and say that, be definition, it cannot be a picture of the actual black hole, but rather the surrounding material. <iframe width="21.960000000000036" height="3.260000000000005" style="position: absolute; width: 21.96px; height: 3.26px; z-index: -9999; border-style: none; left: 14px; top: -5px;" id="MoatPxIOPT0_26653001" scrolling="no"></iframe> <iframe width="21.960000000000036" height="3.260000000000005" style="position: absolute; width: 21.96px; height: 3.26px; z-index: -9999; border-style: none; left: 1040px; top: -5px;" id="MoatPxIOPT0_21320926" scrolling="no"></iframe> <iframe width="21.960000000000036" height="3.260000000000005" style="position: absolute; width: 21.96px; height: 3.26px; z-index: -9999; border-style: none; left: 14px; top: 103px;" id="MoatPxIOPT0_68627117" scrolling="no"></iframe> <iframe width="21.960000000000036" height="3.260000000000005" style="position: absolute; width: 21.96px; height: 3.26px; z-index: -9999; border-style: none; left: 1040px; top: 103px;" id="MoatPxIOPT0_91223853" scrolling="no"></iframe> I think the dark circle is the silhouette of the event horizon against the surrounding bright [energetic] material. ... kind of. I'm sure it's more complicated than that.  |
|
|
|
Post by ChrisB on Apr 10, 2019 19:43:33 GMT
Wow.  I remember when this was all fields... |
|
|
|
Post by jandl100 on Apr 10, 2019 20:25:02 GMT
I dunno about fields - it may have swallowed quite a few! That's a black hole with a mass of 6.5 billion suns. Silly, really, isn't it.  |
|
|
|
Post by MartinT on Apr 10, 2019 20:33:26 GMT
It's an incredible image and just a little scary. 6.5 billion solar masses!
|
|
|
|
Post by jandl100 on Apr 10, 2019 20:39:59 GMT
Luckily, it's 55,000,000 light years away.
|
|
|
|
Post by jandl100 on Apr 10, 2019 21:05:12 GMT
This is interesting. I'm not sure if it is correct.  |
|
|
|
Post by jandl100 on Apr 10, 2019 21:18:39 GMT
So, what are we seeing in that black hole image?
If you want your brain well and truly scrambled, watch this 9 minute video
|
|
|
|
Post by ChrisB on Apr 10, 2019 23:48:53 GMT
That was really informative, thanks Jerry.
|
|
|
|
Post by zippy on Apr 11, 2019 6:30:58 GMT
This is interesting. I'm not sure if it is correct. Probably right - it's got a huge mass, but don't forget that's squashed into an incredibly small volume! |
|
|
|
Post by jandl100 on Apr 11, 2019 7:28:56 GMT
Another interesting article, by one of the EHT team, which delves more deeply into the scientific analysis of the images of the black hole. astrobites.org/2019/04/11/the-first-image-of-a-black-hole/Amongst other fascinating items, it hints at variability of the black hole environment over the period of a week that the data was gathered. Figure 2 (Figure 11 in Paper IV): Fiducial images on each day of observations from each imaging pipeline. A consistent asymmetric ring feature is recovered by all pipelines on all days, with hints of time variability along the brighter southern edge.  |
|
|
|
Post by MikeMusic on Apr 11, 2019 10:06:02 GMT
Luckily, it's 55,000,000 light years away. Be here before you know it Before Brexit for sure |
|
|
|
Post by jandl100 on Apr 11, 2019 16:36:15 GMT
Scientific research in action Katie Bouman - she led the development of the data processing algorithm. ''Watching in disbelief as the first image I ever made of a black hole was in the process of being reconstructed.''  |
|
|
|
Post by MartinT on Apr 11, 2019 16:41:32 GMT
Clever girl!
|
|
|
|
Post by MikeMusic on Apr 12, 2019 10:07:25 GMT
The mad professor stereotype takes a *severe* bashing.
She looks young enough to be a student !
(says the old bloke)
|
|
|
|
Post by jandl100 on Apr 12, 2019 11:36:41 GMT
She's 29 now - she was a uni student when she first heard about the EHT project some 10 years ago and knew immediately that she wanted to be a part of it.
Well, her dream came true!!
We may well be talking about a Nobel Prize here, for the overall project - but women rarely get their fair share of that. We'll see.
|
|
|
|
Post by MikeMusic on Apr 12, 2019 12:54:22 GMT
29....
Is she some sort of genius ?
|
|
|
|
Post by jandl100 on Apr 12, 2019 20:19:55 GMT
From 1 year ago ...
|
|
