Massive black hole found

[Atlas2342]

During a routine testing of a telescope, scientists find a big black hole that was formed by three spiral galaxies colliding...

http://www.abc.net.au/news/2016-04-27/monster-black-hole-formed-by-trio-of-colliding-galaxies/7359340

Its a black hole, 3 billion times the mass of the sun. What more could you ask for? 

Edited April 27, 2016 by Atlas2342

[Spaceception]

3 galaxies? How big is it? Would it dwarf Milkomeda?

[Atlas2342]

1 hour ago, Spaceception said:

3 galaxies? How big is it? Would it dwarf Milkomeda?

I can't tell for sure but 3 is larger that 2...

[Spaceception]

Just now, Atlas2342 said:

I can't tell for sure but 3 is larger that 2...

Check a certain PM soon, I'm nearly done with the third chunk

[Atlas2342]

1 minute ago, Spaceception said:

Check a certain PM soon, I'm nearly done with the third chunk

Ahh...well, i'll be sure to....

[kerbiloid]

3 galaxies lost.

3 billion Sun masses at once.

And it is just (2 * 3e9 * 2e30 * 6.67e-11/(3e8 ^ 2)) / 1.5e11 = 60 AU in radius.

And its density is just (3e9*2e30/((4*pi*(60*1.5e11)^3)/3)) = 2 kg/m³. Twice more dense than air.

How the world is unjust...

Edited April 27, 2016 by kerbiloid

[RainDreamer]

14 hours ago, kerbiloid said:

3 galaxies lost.

3 billion Sun masses at once.

And it is just (2 * 3e9 * 2e30 * 6.67e-11/(3e8 ^ 2)) / 1.5e11 = 60 AU in radius.

And its density is just (3e9*2e30/((4*pi*(60*1.5e11)^3)/3)) = 2 kg/m³. Twice more dense than air.

How the world is unjust...

I know right?! I have to watch my calorie intake so closely, and yet this black hole can eat so much but still so slim, astronomically speaking.

Edited April 28, 2016 by RainDreamer

[cubinator]

8 hours ago, RainDreamer said:

I know right?! I have to watch my calorie intake so closely, and yet this black hole can eat so much but still so slim, astrologically speaking.

I hope you're slimmer than 60 AU... 

 

Edited April 28, 2016 by cubinator

[PB666]

13 hours ago, Spaceception said:

3 galaxies? How big is it? Would it dwarf Milkomeda?

Not three galaxies, the collision of three galaxies, I think we are getting galaxy size and black hole size confused. Big black holes need not be at the center of huge galaxies or mergent galaxies. And holes don't merge often until well after the galaxies have merged.

[UmbralRaptor]

Bleah, the news site managed to have a broken link to MNRAS, and didn't make it obvious that they had one to the actual paper. Also, the image is of the antennae galaxies, rather than the actual collision because reasons?

 

edit, 3.8e9 M☉ likely isn't much compared to the galaxies as a whole, but I'm having trouble finding any figures on stellar or halo mass.

Edited April 28, 2016 by UmbralRaptor