Author Topic: First image of Black Hole  (Read 715 times)

0 Members and 1 Guest are viewing this topic.

Offline Tassie Dave

  • Frequent Poster
  • ******
  • Posts: 2231
First image of Black Hole
« on: April 10, 2019, 04:16:21 PM »
Astronomers have produced the first ever image of a Black Hole, at the centre of the Messier 87 galaxy.

Quote
Over several days in April 2017, eight radio telescopes in Hawaii, Arizona, Spain, Mexico, Chile, and the South Pole zeroed in on Sag A* and M87.

Knitted together, they formed a virtual observatory some 12,000 kilometres across — roughly the diameter of Earth.

“The data is like an incomplete puzzle set,” said team member Monika Moscibrodzka, an astronomer at Radboud University. “We only see pieces of the real true image, and then we have to fill in the gaps of the missing pieces.” In the end, M87 was more photogenic. Like a fidgety child, Sag A* was too “active” to capture a clear picture, the scientists said.

“What we see in the image is the shadow of the black hole’s rim — known as the event horizon, or the point of no return — set against the luminous accretion disk,” Gueth told AFP.



https://www.news.com.au/technology/science/space/first-photo-of-a-black-hole-revealed-astronomers-capture-image-of-cosmic-phenomenon/news-story/2c66b4258c6aab47439840df895f160f

Offline wastrel

  • Great poster... or greatest poster?
  • Technical Administrator
  • Poster of Extraordinary Magnitude
  • *****
  • Posts: 13424
  • Science: A cold-hearted bitch with a 14" strap-on
Re: First image of Black Hole
« Reply #1 on: April 10, 2019, 08:01:52 PM »
Is the accretion disc really "brighter" on one side I wonder?

Offline heyalison

  • Not Enough Spare Time
  • **
  • Posts: 151
Re: First image of Black Hole
« Reply #2 on: April 10, 2019, 08:12:04 PM »
Is the accretion disc really "brighter" on one side I wonder?

This video explains the image, it's pretty neat:


Offline Noisy Rhysling

  • Stopped Going Outside
  • *******
  • Posts: 4434
    • Hyperwar, WWII in Hypertext.
Re: First image of Black Hole
« Reply #3 on: April 11, 2019, 07:38:46 AM »
Short answer: The disc is brighter on the closer side because the junk is coming at us. /nonscientist
"Sunday's horoscope is note worthy because of its strange, sudden and wholly unpredictable and inexplicable occurrences, affecting all phases of life." Your Horoscope" L.A. Evening Herald Express, Sat, 12/06/41

Online brilligtove

  • Too Much Spare Time
  • ********
  • Posts: 7127
  • Ignorance can be cured. Stupidity, you deal with.
Re: First image of Black Hole
« Reply #4 on: April 11, 2019, 07:47:27 AM »
Not a bad nonscientist answer. :) The video is very well done, with physical props that really helped me understand what the picture means.
evidence trumps experience | performance over perfection | responsibility – authority = scapegoat | emotions motivate; data doesn't

Offline wastrel

  • Great poster... or greatest poster?
  • Technical Administrator
  • Poster of Extraordinary Magnitude
  • *****
  • Posts: 13424
  • Science: A cold-hearted bitch with a 14" strap-on
Re: First image of Black Hole
« Reply #5 on: April 11, 2019, 11:20:33 AM »
Is the accretion disc really "brighter" on one side I wonder?

This video explains the image, it's pretty neat:



Exactly what I needed, explained it perfectly. Thanks!!

Online brilligtove

  • Too Much Spare Time
  • ********
  • Posts: 7127
  • Ignorance can be cured. Stupidity, you deal with.
Re: First image of Black Hole
« Reply #6 on: April 11, 2019, 04:49:18 PM »
I went so far as to do a screen cap, mark it up with the various dimensions, and then completely forget to post it.  ::)

The next video in Veritasium talks about what they found and why it looks that way. Worth a watch.
evidence trumps experience | performance over perfection | responsibility – authority = scapegoat | emotions motivate; data doesn't

Online Gigabyte

  • Not Enough Spare Time
  • **
  • Posts: 108
  • If you believe, they put a man on the moon
Re: First image of Black Hole
« Reply #7 on: April 13, 2019, 05:59:18 PM »
I don't understand some things, but at least I know I don't know

Offline Noisy Rhysling

  • Stopped Going Outside
  • *******
  • Posts: 4434
    • Hyperwar, WWII in Hypertext.
Re: First image of Black Hole
« Reply #8 on: April 13, 2019, 06:35:50 PM »
Boss Lady lol'd.  ;D
"Sunday's horoscope is note worthy because of its strange, sudden and wholly unpredictable and inexplicable occurrences, affecting all phases of life." Your Horoscope" L.A. Evening Herald Express, Sat, 12/06/41

Offline John Albert

  • Too Much Spare Time
  • ********
  • Posts: 6020
Re: First image of Black Hole
« Reply #9 on: April 13, 2019, 07:15:00 PM »
Is the accretion disc really "brighter" on one side I wonder?

This video explains the image, it's pretty neat:



Exactly what I needed, explained it perfectly. Thanks!!

Veritasium is def one of the best science channels on YouTube, but Derek Muller made a factual error in that video.

The first black hole imaged by the EHT is not in fact Sagittarius A*.

It's the supermassive black hole at the center of the galaxy NGC 4486, and has since been given the name Powehi.
« Last Edit: April 13, 2019, 07:17:57 PM by John Albert »

Offline Tassie Dave

  • Frequent Poster
  • ******
  • Posts: 2231
Re: First image of Black Hole
« Reply #10 on: April 13, 2019, 07:40:12 PM »
Veritasium is def one of the best science channels on YouTube, but Derek Muller made a factual error in that video.

The first black hole imaged by the EHT is not in fact Sagittarius A*.

It's the supermassive black hole at the center of the galaxy NGC 4486, and has since been given the name Powehi.

He is talking before the release of the image. He is only wrong in hindsight. Sagittarius A was one of the 2 black holes they were trying to image. Messier 87 ended up being the better image.

Offline John Albert

  • Too Much Spare Time
  • ********
  • Posts: 6020
Re: First image of Black Hole
« Reply #11 on: April 14, 2019, 09:22:04 AM »
Veritasium is def one of the best science channels on YouTube, but Derek Muller made a factual error in that video.

The first black hole imaged by the EHT is not in fact Sagittarius A*.

It's the supermassive black hole at the center of the galaxy NGC 4486, and has since been given the name Powehi.

He is talking before the release of the image. He is only wrong in hindsight. Sagittarius A was one of the 2 black holes they were trying to image. Messier 87 ended up being the better image.

That's fair.

I didn't know they also imaged Sag A* with the same setup. I'd like to see that image as well.

Online CarbShark

  • Poster of Extraordinary Magnitude
  • **********
  • Posts: 11029
Re: First image of Black Hole
« Reply #12 on: April 14, 2019, 02:02:20 PM »
I wanna see the black hole movie.


Sent from my iPhone using Tapatalk
and Donald Trump is President of the United States.

I'm not a doctor, I'm just someone who has done a ton of research into diet and nutrition.

Offline Captain Video

  • Superhero of the Silver Screen
  • Frequent Poster
  • ******
  • Posts: 3052
Re: First image of Black Hole
« Reply #13 on: April 14, 2019, 02:17:09 PM »
I wanna see the black hole movie.


Sent from my iPhone using Tapatalk

Maximilian scared the crap out of me as a kid but that movie inspired me to learn more about space. Most kids had a dinosaur phase but I had a black hole phase. Of course if you watch it now it does not hold up very well.
“Don't explain computers to laymen. Simpler to explain sex to a virgin.”
― Robert A. Heinlein, The Moon is a Harsh Mistress

Online CarbShark

  • Poster of Extraordinary Magnitude
  • **********
  • Posts: 11029
First image of Black Hole
« Reply #14 on: April 14, 2019, 03:33:40 PM »
What I mean is I want them to take enough images of this black hole to make a video





Sent from my iPhone using Tapatalk
« Last Edit: April 14, 2019, 03:50:02 PM by CarbShark »
and Donald Trump is President of the United States.

I'm not a doctor, I'm just someone who has done a ton of research into diet and nutrition.