Black hole scientists stitching the data together

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Black hole scientists stitching the data together

Unread postby Zyxzevn » Wed Feb 28, 2018 8:15 am

https://www.vox.com/science-and-health/2018/1/8/16822272/black-hole-looks-like-what

In April 2017, the Event Horizon team connected radio telescopes at multiple locations across the world — as far-flung as Hawaii and the South Pole — and instructing them all to look toward Sagittarius A for a few days. The network is the result of an international collaboration of 14 research institutions across the world.

Together, these eight telescopes have the power to “count the stitches on a baseball from 8,000 miles away,” as MIT explains. The array generated such a huge amount of data that it was more efficient to fly the data from each of the telescopes to a centralized location than it would be to transfer it over the internet.

Right now, the scientists are in the midst of stitching all that data together. They’re hoping the final image will show the event horizon, the boundary beyond which no light can escape. That event horizon will likely be surrounded by an accretion disc, a bright, incredibly energetic ring of matter that swirls around the black hole.


Be warned:
With the confirmation-bias that they have, I suspect they will create an imaginary image from
mostly random data by applying too many filters in a wrong way.
Just like they did with the CBR (see Robitaille) and gravitational waves (see this forum).
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Re: Black hole scientists stiching the data together

Unread postby Zyxzevn » Mon Apr 16, 2018 7:36 pm

If one black hole does not work just add many of them:

As many as 20,000 black holes are predicted to settle into the central parsec of the Galaxy



Nature - Letter
A density cusp of quiescent X-ray binaries in the central parsec of the Galaxy


The existence of a ‘density cusp’—a localized increase in number—of stellar-mass black holes near a supermassive black hole is a fundamental prediction of galactic stellar dynamics. The best place to detect such a cusp is in the Galactic Centre, where the nearest supermassive black hole, Sagittarius A*, resides. As many as 20,000 black holes are predicted to settle into the central parsec of the Galaxy as a result of dynamical friction; however, so far no density cusp of black holes has been detected. Low-mass X-ray binary systems that contain a stellar-mass black hole are natural tracers of isolated black holes. Here we report observations of a dozen quiescent X-ray binaries in a density cusp within one parsec of Sagittarius A*. The lower-energy emission spectra that we observed in these binaries is distinct from the higher-energy spectra associated with the population of accreting white dwarfs that dominates the central eight parsecs of the Galaxy. The properties of these X-ray binaries, in particular their spatial distribution and luminosity function, suggest the existence of hundreds of binary systems in the central parsec of the Galaxy and many more isolated black holes. We cannot rule out a contribution to the observed emission from a population (of up to about one-half the number of X-ray binaries) of rotationally powered, millisecond pulsars. The spatial distribution of the binary systems is a relic of their formation history, either in the stellar disk around Sagittarius A* or through in-fall from globular clusters, and constrains the number density of sources in the modelling of gravitational waves from massive stellar remnants, such as neutron stars and black holes.


https://www.youtube.com/watch?v=jBVnOFD1oyw
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Re: Black hole scientists stiching the data together

Unread postby Metryq » Tue Apr 17, 2018 2:03 am

Ha! Love the YouTube video. I thought it was going to be one of those featurettes praising the movie Interstellar for its "scientific accuracy" in depicting a black hole. "We consulted with experts!" Gads, that's embarrassing.
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Re: Black hole scientists stitching the data together

Unread postby JHL » Wed Apr 18, 2018 5:44 am

Question: What exactly powers a black hole? Yes, I realize it's a purportedly or presumably negative force - the great absence of something, maybe like a big bang infant or something - but what creates this enormous discontinuity? What starts the inflow; the loss, the vacuum, or however you want to envision the thing?

Doesn't that require some serious interruption of the "tension" of "spacetime" or whatever? This violation of reality itself? Wouldn't something have to happen to involve the spontaneous disappearance of gazillions of units of whatever you use to measure mass at that scale? Seems it has to be a something to product all that nothingness and then move it all from here to there.

Oh wait: It's exploding stars. I forgot. So stuff exploding makes stuff disappear entirely. I don't get these people.
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Re: Black hole scientists stitching the data together

Unread postby Zyxzevn » Wed Apr 18, 2018 11:32 am

JHL wrote: Seems it has to be a something to product all that nothingness and then move it all from here to there.


The black hole is filled with matter, which disappears in a singularity.
And the more it gets, the bigger the hole becomes.

Let me show you in this picture:

Image
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