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Author Topic: First Image Of Black Hole  (Read 954 times)

Offline fredymac

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First Image Of Black Hole
« on: April 04, 2019, 06:23:23 am »
An image of a black hole may be revealed next Wednesday by astronomers who collected data during early 2017 by linking radio telescopes across the world.  The telescopes were pointed at the black holes located at the centers of the Milky Way and Andromeda galaxies.  2 years of data crunching were needed to combine the telescope signals into a coherent image capable of resolving the event horizon where gas heated by friction emit electromagnetic radiation that can be imaged by radio astronomy.


This is the group that conducted the survey
https://eventhorizontelescope.org/

Background story
http://www.astronomy.com/news/2019/04/the-event-horizon-telescope-may-soon-release-first-ever-black-hole-image

Offline fredymac

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Re: First Image Of Black Hole
« Reply #1 on: April 10, 2019, 02:22:57 am »

Offline fredymac

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Re: First Image Of Black Hole
« Reply #2 on: April 10, 2019, 06:46:26 am »
Black hole at center of galaxy M87.


Offline muttbutt

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Re: First Image Of Black Hole
« Reply #3 on: April 10, 2019, 07:02:40 am »
For Science! B)

Offline sferrin

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Re: First Image Of Black Hole
« Reply #4 on: April 10, 2019, 08:07:08 am »
I'm amazed they can decipher anything considering all the crud between us and the center of the galaxy.  :o
"DARPA Hard"  It ain't what it use to be.

Offline fredymac

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Re: First Image Of Black Hole
« Reply #5 on: April 10, 2019, 10:05:43 am »
That's why you pick electromagnetic wavelengths that penetrate interstellar dust.  In the same manner, the JWST will work in IR bands that will let it see details that were shrouded to Hubble.

I wonder if they were successful in processing any data from our own Milky Way.  2200 times closer so should see a lot more detail.  Since they didn't say anything about it, I guess they are having a harder time with the data.

Offline Grey Havoc

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Re: First Image Of Black Hole
« Reply #6 on: April 10, 2019, 12:11:41 pm »
Obligatory:
The sole imperative of a government, once instituted, is to survive.

Offline TomS

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Re: First Image Of Black Hole
« Reply #7 on: April 10, 2019, 12:57:36 pm »
That's why you pick electromagnetic wavelengths that penetrate interstellar dust.  In the same manner, the JWST will work in IR bands that will let it see details that were shrouded to Hubble.

I wonder if they were successful in processing any data from our own Milky Way.  2200 times closer so should see a lot more detail.  Since they didn't say anything about it, I guess they are having a harder time with the data.

Sagittarius A* is also about 1/1500 the mass of the M87 central black hole,so they have about the same apparent size accretion disks, so it's probably a wash detail-wise. 

It's not clear to me why they decoded the M87 data first, but it's probably a case of having only so much processing capacity and one had to be done first.

Offline Michel Van

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Re: First Image Of Black Hole
« Reply #8 on: April 10, 2019, 01:11:27 pm »
Obligatory part two:

I love Strange Technology

Offline sferrin

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Re: First Image Of Black Hole
« Reply #9 on: April 10, 2019, 02:08:08 pm »
"DARPA Hard"  It ain't what it use to be.

Offline starviking

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Re: First Image Of Black Hole
« Reply #10 on: April 10, 2019, 07:18:31 pm »
I wonder if they were successful in processing any data from our own Milky Way.  2200 times closer so should see a lot more detail.  Since they didn't say anything about it, I guess they are having a harder time with the data.

We're embedded in the disc of our galaxy, so we'd have to look through an awful lot of stars and dust to get a picture. Probably impossible.

Offline Orionblamblam

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Re: First Image Of Black Hole
« Reply #11 on: April 10, 2019, 07:37:22 pm »

We're embedded in the disc of our galaxy, so we'd have to look through an awful lot of stars and dust to get a picture. Probably impossible.

Prepare to be surprised.

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And so the endless circle of life comes to an end, meaningless and grim. Why did they live, and why did they die? No reason. Two hundred million years of evolution snuffed out, for in the end Nature is horrific and teaches us nothing

Offline Justo Miranda

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Re: First Image Of Black Hole
« Reply #12 on: April 10, 2019, 08:14:05 pm »
Quo vadis?

Offline galgot

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Re: First Image Of Black Hole
« Reply #13 on: April 11, 2019, 12:45:28 am »

We're embedded in the disc of our galaxy, so we'd have to look through an awful lot of stars and dust to get a picture. Probably impossible.

Prepare to be surprised.



What is this please ? Looks bit like cells division...

EDIT: Never mind , found it :)
« Last Edit: April 11, 2019, 12:51:00 am by galgot »

Offline fredymac

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Re: First Image Of Black Hole
« Reply #14 on: April 11, 2019, 06:57:36 am »
IR images of Milky Way galactic center showing stars rotating around a black hole (timelapse over years).  Originally done many years ago and repeated by other groups.  Chandra X-Ray telescope also looked at this area.