Thread: Shedding Light on Dark Matter Disc

Thank you for posting.
Very interesting article.
But it does not discuss dark matter.
From what we can tell, dark matter is a halo that galaxies collect, and does not concentrate in the disk at all.
This article concerns very energetic and hot particles.

Near a galactic center would indeed be a highly radioactive place, with or without benefit of the black hole feeding.
But this has to be looked at in perspective.
This view is seen from a great distance.
Up close the gasses and high energy particle would be very diffuse.
So diffuse that stars have a heliopause where their local particles plow into the intersteller winds.

We observe the region of orbit above earth where the ISS resides to be a vacuum.
In actuality it is filled with the output of the sun that creates the heliosphere.
Where that heliosphere pressure is stopped by the intersteller winds forms the heliopause.
From a great distance and with sensitive instruments the earth would be observed to reside in a great solar wind blasting out a big heliopause bubble in the intersteller wind cycling into the galactic center.

Even when a black hole is gobbling up stars, the only area with any density is at the event horizon.
What we have to keep in perspective is on the local level, it is so diffuse that it is perceived to be a vaccuum of empty space.

Bart,

'Dark' is a code word, as I'm sure you know, for 'Unknown'.

They have refered to 'The Disc' at the center of the Milky Way as 'Dark Matter' because they were not sure of it's origin.

So, this study, reveals what once was unknown, meaning what once was 'Dark', is now known, shedding light on the matter.

Ther is still 'Dark Matter' in the Universe, just no longer at the 'Disc'.

Here are a couple of examples of the term 'Dark Matter' being used on the 'Disc'.

http://www.sciencedaily.com/releases...0915210506.htm

http://www.sciencedaily.com/releases...0110094853.htm

http://www.sciencedaily.com/releases...1/081119171826

What once was 'Dark', now known, light has therefore been 'Shed'.

The Beast

Originally Posted by ObedientBeast

Bart,

'Dark' is a code word, as I'm sure you know, for 'Unknown'.

They have refered to 'The Disc' at the center of the Milky Way as 'Dark Matter' because they were not sure of it's origin.

So, this study, reveals what once was unknown, meaning what once was 'Dark', is now known, shedding light on the matter.

Ther is still 'Dark Matter' in the Universe, just no longer at the 'Disc'.

Here are a couple of examples of the term 'Dark Matter' being used on the 'Disc'.

Dark Matter Disk In Our Galaxy, Supercomputer Simulation Shows

Milky Way Galaxy Is Warped And Vibrating Like A Drum

NASA And DOE Collaborate On Dark Energy Research

What once was 'Dark', now known, light has therefore been 'Shed'.

The Beast

Thank you for the links and the clarification of your meaning.
However you are in error about the mass/energy densities of interstellar space.

something like this?

Very interesting. I've been interested in finding out more about Dark Matter and Dark Energy. Thank you for the information on Dark Matter.

Originally Posted by ObedientBeast

Hi All,

For quite some time, I have been talking about the 'Dark Matter Disc' that exists along the Galactic Plane, and how crossing that Plane would prove to be very dangerous. I have also mentioned the 'Local Cloud' of Hydrogen that is right ahead of of Solar System.

A recent report has shed a little light on exactly it is, why it is, and what it is made of.

I had said before that I thought the 'Matter' at the plane was residue of the Black Hole at the center of our galaxy, and that it was flowing out from there, turns out just the opposite is true.

The 'Disc' is flowing 'IN', and the Local Cloud is generated by outflow from it.

Here is a link.

Space telescopes reveal secrets of turbulent black hole

What do you think??

The Beast

First two photos are from Hubble, images of the 'Disc' in distant Galaxies, third image is 'Artist Concept' of the Local Cloud.

Hi All,

I started this thread a couple month's ago, and just realised that the most important point of the article is that 'Black Holes Suck', that means that we are not being flung out of the center, we are heading down a 'Galactic Drain'.

Which also means that everyone is looking the wrong way, for something coming at us. Instead of looking South of the planet, toward the 'Center' of the Galaxy, what may be coming at us, will be coming from the Northen Sky, away from the center, being sucked in at 700 kms.

So, I think we should keep a couple of our 'Electronic Eyes', gazing toward the North Star.

The Beast

Where would it come from?
Everything within 100,000 light years is pretty much circling the drain at about the same relative velocities.
The spaces between everything is just so immense.
Even at 300,000 + mph, galaxy collisions take millions of years.

We think of galaxies as full of closely packed stars, but thats just because the space they are in is so big.
Even stars that are close neighbors are trillions of miles apart.
Everything being relative and all.

The Universe is made up of 99% Dark Matter.

It's the incoming 'Gasses' that are flowing, there is this thing called the "Local Cloud' (check third thumbnail in OP), it's made of mostly Hydrogen, but I'm sure it's not pure. There must be chunks of matter within that, but we still need to keep our minds on Jupiter, whatever is coming, will get there first.