How are they formed?
2007-07-26 21:23:24 · 4 answers · asked by LES MiZeRaBLE 4 in Science & Mathematics ➔ Astronomy & Space
Basically by matter accretion. Once a 'stellar' mass black hole is formed, only one thing can 'convert' it into a super massive black hole. That is it swallows everything that gets close to it. This happens when you have a binary or ternary star system in which the black hole siphons the matter of their companions and thus increases its mass.
The other way a super massive black hole is formed is when stellar masses collide, like binary systems creating a supermassive star that rapidly depletes its fuel and explodes leaving a SMBH as remanant. It is theorized that if neutron stras collide they would produce a massive BH.
I asume by your question that you know how stellar mass black holes are formed. . . if not, check this:
http://answers.yahoo.com/question/index;_ylt=Ajz3UnoYRHWUkeVOwW.se7bty6IX?qid=20070625192801AAjyueq&show=7#profile-info-df93a0c629f5a3364a1968b28844865aaa
2007-07-26 21:36:29 · answer #1 · answered by ΛLΞX Q 5 · 0⤊ 0⤋
Well, the first thing that you do is kill a star. When the star dies, it pulls everything anywhere nearby into it sort of like a great big drain hole that someone pulled the plug on.
When everything goes into the center of the dying star, it gets melted and cooked and compressed into the teeniest possible little mass right at the very center. Surface temperatures on stars range in the area of 10,000 degrees F. However, down in the core of a star, temperatures may reach tens of millions of degrees F. So, this melting and cooking process happens fairly fast.
At some point, the equilibrium of balance between a very hot, molten, mass and the pressure of all that mass on the core exceeds what can be retained and the entire thing just explodes outward leaving a giant hole in nothing.
2007-07-27 06:18:41 · answer #2 · answered by zahbudar 6 · 0⤊ 0⤋
black holes are formed when
# As a direct result of the gravitational collapse of a star.
# By collisions between neutron stars
most effective way for a black hole to become a "massive" BH is to devour another blackhole.
interesting flick. check this out.
http://www.pbs.org/wgbh/nova/blackhole/program.html
2007-07-27 05:25:47 · answer #3 · answered by Mercury 2010 7 · 0⤊ 0⤋
Ah....that is a good question, but I cannot answer that even though I'm a space nerd because I fell asleep in class when the teacher was talking about it cause I was playing too much RuneScape the other night...
2007-07-27 06:05:55 · answer #4 · answered by Eddyking4 2 · 0⤊ 0⤋