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- Path: sparky!uunet!mcsun!uknet!comlab.ox.ac.uk!oxuniv!clements
- From: clements@vax.oxford.ac.uk
- Newsgroups: sci.astro
- Subject: Re: COBE result (was Re: Quantisation of REDSHIFT)
- Message-ID: <1993Jan12.104124.11221@vax.oxford.ac.uk>
- Date: 12 Jan 93 10:41:24 GMT
- References: <1993Jan8.174107.5102@Princeton.EDU> <1iqf5lINNilr@manuel.anu.edu.au>
- Organization: Oxford University VAX 6620
- Lines: 35
-
- In article <1iqf5lINNilr@manuel.anu.edu.au>, markus@octavia.anu.edu.au (Markus Buchhorn) writes:
- >
- > richmond@spiff.Princeton.EDU (Stupendous Man) writes:
- >
- >> Speaking of astronomy, I read the article in today's (Friday's) NY Times
- >> on a presentation of COBE results from the AAS meeting. No one here at
- >> Princeton could figure out what the article was saying. It SEEMED to
- >> say something like "COBE measurements of the microwave spectrum show
- >> a really, really good fit to a blackbody spectrum. Therefore, nothing
- >> exciting happened in the universe after the BB for at least one year."
- >> Can someone at the AAS meeting make things more clear?
- >>
- >
- > The AAS result says that they saw a triangle, and it was a very smooth
- > triangle - no bumps at other temperatures, down to some very small level. Hence,
- > if there were other events at a later time they were *very very* small.
- >
- > Does that help to make it clearer ? {And to those who know, did I get
- > it right ? :-) }
- >
-
- Soudns about right, but as another who wasn't at the meeting, the important
- thing is how small would those other triangles (I mean BBs) be for COBE not to
- have seen them? The original result released at the 1990 AAS had a limit of
- about 1% of the CBR power. This has presumeably got smaller, but how much? As
- someone who's trying to detect things that would contribute to small
- fluctuations in the CBR at various wavelengths this is quite important!
-
- --
- ================================================================================
- Dave Clements, Oxford University Astrophysics Department
- ================================================================================
- clements @ uk.ac.ox.vax | Umberto Eco is the *real* Comte de
- dlc @ uk.ac.ox.astro | Saint Germain...
- ================================================================================
-