Posted on 04/13/2018 1:06:55 PM PDT by LibWhacker
Thanks for the reply. You’re a gentleman and a scholar.
The image by SWX is actually a snapshot from a simulation done by scientists. It’s not an artist’s impression.
No, I’m a Genuine Asshole. I have the patch.
Thanks for all these links. It’s just the sort of thing I’m looking for, although I can see it’s going to take me some time to get through all of them: I appreciate it and I’m sure I’m going to learn a lot.
Apology unnecessary, although I thank you for saying something about it; I was having trouble figuring out what you were saying exactly. In other words, were you being obnoxious and rude or were you saying something that I really had to consider carefully before responding? I’m glad I decided on the latter. That’s why I was so slow in replying to you; I just couldn’t figure it out or what to say. I probably would have gotten there eventually, but it was going to take me some time. That’s totally my fault (and I still haven’t looked up that parrot reference!). Cheers! :-)
Quantum gravity
But some disputes the total lack of matter in a black hole
It’s all speculation based on structural observance at something a minimum of 3000 light years from home....far less than the Stones song but damn far
What do they go on
Orbital speed?
Gravity estimation?
All matter is torn apart from the time it hits the Schwarzchild radius and reduced to atoms
Would make quite a weapon .
But how is all these determined from strictly telescopic observance or is some data taken from space EM waves?
Someone who knows please educate me...don’t google and pretend..I can do that
Anybody here we’ll versed in how black hole properties are ascertained and measured?
Kip are you a freeper.
Lol
I guess when you take the neutrons of a massive neutron star and smash them together until none of the nuclear forces can maintain the structure of the quarks or whatever sub atomic particles are there, then it is beyond our imagination and way beyond our ability to reproduce in a lab.
God's creation is amazing!
It has gravity which implies mass but if the matter is gone yet the gravity remains.....
Well one thing I can say with confidence is that everything we know about black-holes, with the possible exception of a bit of data from this article, is from our observation of EMR and not the observation of gravity waves
Lol, okay, thanks for that. I have seen that before. Been a while.
Are you sure it’s not the argument clinic? Endless version?
I didn’t mean to infer gravity waves..did I say that..sorry if I did.
I’m asking to be educated how do we learn about black holes given their distance and unusual nature
Is it telescopic observance and interpreting electromagnetic radiation only?
Do we get most of this from special orbiting scopes...infrared etc
Does anyone know how many light years out we can make calculations about the properties of what we’re looking at
If they can see it, luminosity, temperature, composition, mass, speed, age, etc., all can be determined (or calculated, if you prefer) -- right out to the edge of the observable universe, 13 billion light years away. Check out this video, and intro to the "distance ladder," . So much of modern astronomy has been made possible by that ladder.
It’s a discussion about a black hole, not Uranus. But I digress...
Oh no, it was the article that referenced gravity waves. I wasn't sure that they had been detected at all yet but I guess they have.
I’m asking to be educated how do we learn about black holes given their distance and unusual nature.
45 years ago I was reading a book that was already several years old called "The Universe". I was 10 and read it cover to cover more than once. They had already theorized black holes back then and said "they can't be directly observed by definition but you can observe their effects". Their gravity can be equal to that of a million stars and that affects the motions of the stars in a predictable way. That motion can be measures with surprising resolution using redshift in spectroscopy. Then there are the black holes in the process of eating other stars. As the matter enters the black hole it is accelerated to near the speed of light and it emits crazy powerful high frequency EMR.
Is it telescopic observance and interpreting electromagnetic radiation only?
I'd have to say 99.9999 percent yes it is EMR from radio waves all the way through x-rays. Wiki says the first gravity wave was detected in 2015 and it took a cataclysmic event to be able to detect it. I wouldn't look for any images produces by a gravity wave detector in the near future.
Do we get most of this from special orbiting scopes...infrared etc
That's a big subject as different frequencies of EMR can and can't penetrate the atmosphere and different frequencies tell us a variety of things.
Does anyone know how many light years out we can make calculations about the properties of what we’re looking at
Have you ever heard of a gravity lens? Now that is a fascinating subject. Google some images of them and see. In a nutshell a gravity lens is a cluster of galaxies a hundreds of millions of light years away which has enough gravity to magnify, split or distort the images of galaxies way beyond them. This is just an amazing affect of gravity on EMR.
Thanks to both of you
Really great info
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