PC Pals Forum
General Discussion => Science & Nature => Topic started by: sam on December 05, 2010, 21:14
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Massive galactic clusters – which are roughly orientated in a plane that is roughly face-on to Earth – can generate strong gravitational lensing. However, several surveys of such clusters have reached the conclusion that these clusters have a tendency towards lensing too much – at least more than is predicted based on their expected mass.
http://www.universetoday.com/80339/astronomy-without-a-telescope-through-a-lens-darkly/
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;D I never thought I would see the words "Sunyaev–Zel'dovich effect" on this forum Sam! What monster have I unleashed? :hee-hee: It's a very good article about the innovative (and quite desperate) methods astronomers are using to detect invisible stuff and I have to hand it to you guys who are on the cutting edge of all this. Those who claim astrophysicists are a waste of taxpayers money really have no idea how much of an investment they are to the future of mankind. I love the photo of that double Einstein ring. It's almost too good to be true! 8-)
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I've got lots of photographs like that. 'Sfunny, but I've always been told the effect was due to scratched negatives. Now I know the truth - I was a cutting-edge astro-physicist decades ahead of my time.
Seriously, though - interesting article, Sam :) .
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I love the photo of that double Einstein ring.
tis lovely isn't it.
I still can't wait until we are able to detect the epoch of reionisation, SKA science really though - that's as far back in time as we can see. So cutting edge indeed. There are moments when I'm so wrapped up in my work and the fine details that I don't think how cool it is.
Sunyaev–Zel'dovich effect
child's play Clive :p
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I still can't wait until we are able to detect the epoch of reionisation,
Ten years ago I would have said it's impossible. How times have changed!
child's play Clive :p
I think you got away with it! :laugh: