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 Astrophysics; Lesson 1: Black Holes

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Malkuthe Highwind
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PostSubject: Astrophysics; Lesson 1: Black Holes   Tue Mar 31, 2009 8:25 pm

Well, generally speaking, a black hole is a point in space with infinite density and infinite gravity. Another description for said heavenly body is "An object which is smaller than its schwarzschild radius" more on Schwarzschild later. There are three types of Black Holes, namely:

>Stellar Mass Black Holes
- An "Ordinary" black hole. It is formed through Supernovae

>Supermassive Black Holes
- No one really knows how these are formed and supposedly every galaxy has one or more in its galactic core.
- The biggest one found to date is 18 billion solar masses in size

>Primordial Black Holes
- These black holes were formed during or after the big bang, theoretically, some may still be around

Now Parts Of A Black Hole

>Accretion Disk
-This is a disk of superheated gas and dust forming around a black hole, due to matter being sucked in.

>Event Horizon
-The point of no return, once you enter here, there is no hope of escaping the black hole's deathly grip, or so, is the popularly accepted belief.

>Singularity
-A single point in space and time where all the matter sucked in by the black hole goes.

A black hole, theoretically speaking has a very finite life, according to Stephen Hawking a black hole radiates a type of energy called hawking radiation and will in time radiate itself out of existence. Then comes the black hole information loss paradox, since if the black hole radiates itself out of existence, what happens to the information contained within it? since information cannot be lost. More on the information paradox in lesson 2. This concludes lesson 1, deal with it!
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tablizo
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PostSubject: noseblid   Tue Mar 31, 2009 8:45 pm

grbeh nmn yan....baltits....kaw nah....pro alm q nmng cinopy paste m lng yan eh...hahahahhah.... joke!!!!!!!!......kaw n tlgah
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miseryinlove_tayis
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PostSubject: Re: Astrophysics; Lesson 1: Black Holes   Tue Mar 31, 2009 9:04 pm

bea..wag mo ngang awayin ung ADMINISTRATOR ntin.. Smile Smile Neutral
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Malkuthe Highwind
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PostSubject: Re: Astrophysics; Lesson 1: Black Holes   Wed Apr 01, 2009 7:08 am

@Bea: Wala ka namang mahahanap na ganyan sa internet eh, from scratch yan. bwahahaha!

@Charisse: Why? You have a problem with that?
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ian11gabriel
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PostSubject: Re: Astrophysics; Lesson 1: Black Holes   Thu Apr 02, 2009 5:12 pm

If all of it is from scratch... then where do you base your answers.....
in books? cause you said they can;t be found in the internet....
study study study study study study study
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Malkuthe Highwind
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PostSubject: Re: Astrophysics; Lesson 1: Black Holes   Thu Apr 02, 2009 5:39 pm

Stock knowledge... ahaha... yeah books... That isn't even in-depth enough...
There's more to it than simply points in space eating up matter as they go...
I haven't even scratched the surface with that one...

=*[PaXZeL]*=
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ian11gabriel
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PostSubject: Re: Astrophysics; Lesson 1: Black Holes   Thu Apr 02, 2009 5:42 pm

OK
So they are absolutely facts..............
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Malkuthe Highwind
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PostSubject: Re: Astrophysics; Lesson 1: Black Holes   Thu Apr 02, 2009 5:49 pm

umm...
I wouldn't say that...
There is no such thing as a scientific fact...
Everything that there is, is based upon existing theories...

Take the laws of physics, they should be called "The Laws of Physics Specific to Sub-Extremities"
Why? because the laws of physics break down under extreme conditions
Such as the big bang singularity, the universal scale and the infinitesimally small...

But yeah, I get your point..

=*[PaXZeL]*=
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willtofly258
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PostSubject: Re: Astrophysics; Lesson 1: Black Holes   Thu Apr 02, 2009 6:28 pm

HAY! Basta Good Luck in being an Astrophysicsist. Very Happy You already have a good future showing that Very Happy
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