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Dark Matter/Energy

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18 years 7 months ago #27010 by albertw
Replied by albertw on topic Re: Dark Matter/Energy

You're gonna be horrified by this but I have an honours physics degree and I NEVER did GR as part of my degree. That was reserved for the single honours people, us double honours people were obviously not worthy!


The basics were covered in first year in UCD Physics. SR was dealt with in more detail. In 1st year Maths Physics SR was done briefly; then again SR is in the Leaving Cert Applied Maths course. While Leaving Cert doesnt explicitly cover any relativity they do now do a decent bit of modern particle physics at higher level.

The one nice thing about having a BSc. in computer science from UCD is that I got to spend 3 years doing various bits of physics as part of the course.

Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/

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  • Son Goku
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18 years 4 months ago #31841 by Son Goku
Replied by Son Goku on topic Re: Dark Matter/Energy
The newest Chandra results make a pretty harsh case against alternate theories of gravity.
Dark Matter seems to have been observed multiple times and it will be difficult for MOND and other such theories to explain these results.

Here are the provisional abstracts for the results:
Abstract 1
Abstract 2

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  • DaveGrennan
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18 years 4 months ago #31921 by DaveGrennan
Replied by DaveGrennan on topic Re: Dark Matter/Energy
Just saw this!

news.bbc.co.uk/2/hi/science/nature/5272226.stm

If this turns out to be anything more than hype, then it may well be the biggest news in cosmolgy/physics ever??

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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18 years 3 months ago #31922 by Son Goku
Replied by Son Goku on topic Re: Dark Matter/Energy

Just saw this!

news.bbc.co.uk/2/hi/science/nature/5272226.stm

If this turns out to be anything more than hype, then it may well be the biggest news in cosmolgy/physics ever??

It's definitely not hype, the study is actually more rigorous than usual. And simulations confirm that only General Relativity can reproduce these results.
Here is the real paper:
arxiv.org/abs/astro-ph/0608407

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18 years 3 months ago #31925 by voyager
Replied by voyager on topic Re: Dark Matter/Energy
That's pretty cool ... good to see us getting more of a handel on this Dark Matter stuff .... will shut up some of the anti-big-bangers who argue that Dark Matter is just a conspiracy to make the big bang stand up.

My Home Page - www.bartbusschots.ie

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18 years 3 months ago #31926 by ftodonoghue
Replied by ftodonoghue on topic Re: Dark Matter/Energy

Just saw this!

news.bbc.co.uk/2/hi/science/nature/5272226.stm

If this turns out to be anything more than hype, then it may well be the biggest news in cosmolgy/physics ever??



Surely this discovery is just another (albeit more direct ) confirmation of dark matter. I thought it was pretty much established science that dark matter existed. :?:

Cheers
Trevor

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