Hubble Ultra Deep Field

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20 years 8 months ago #9530 by n/a10
Replied by n/a10 on topic Reply from ed van der Meulen
<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by tvanflandern</i>
<br /><blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by jrich</i>
<br />How much fuzziness should we expect to see in a 13 billion lightyear image? The image from Hubble doesn't look very fuzzy.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">Only the faintest galaxies in the image are that far away. Early reports suggested they were fuzzy. I haven't verified that. But Compton scattering must cause light to start to scatter after it has traveled far enough. We just need to learn how far that distance is. -|Tom|-
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

That's clear.

About the Compton scattering. Just some questions.

Do you expect in some regions more scattering than in other regions?

Or maybe better in some directions more than in other directions?

Do we have a good enough picture of IGM?

Can't IGM work as a lens?

Chemists do those experiments as well. Scattering is there a notion as well. They have very strange results.

Are there scattering models?

I agree with your MM that farther away we will see another kind of reality. Much wilder, yes chaotic. Not very different I expect form the horizon of a black hole. An extremely wild edge presenting typical rules but with a lot of physical chaos, and still in some dynamical layers. And I think we will pass those layers before we get a picture of a real beginning of our universe.

I expect we can't look through some of that layers. So that picture we maybe never will see. Wouldn't that be bad news?

Ed van der Meulen

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20 years 8 months ago #9591 by Jim
Replied by Jim on topic Reply from
The fuzzyness that seems to be a result of distance would be a better indicator of distance than the redshift of quasars since redshift can be caused by a lot of things. So, I'm wondering which objects are redshifted in the photo? The distance is estimated by the redshift in concentional modeling-right?

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