CMBR - multiple detections of the same 'spots'?

In summary, COBE first detected the µK components and many independent observations of the CMBR have been made since then, including the much-discussed WMAP. While no one has attempted to publish papers on the extent to which particular spots have been observed by different teams/instruments/missions, there have been instances of the same spots being detected by different telescopes, allowing for correlations and studies such as the Sunyaev-Zeldovich effect. This suggests that the CMB maps of different telescopes look very similar, not just statistically, but also in terms of overall appearance.
  • #1
Nereid
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COBE first detected the µK components, though the team cautioned against interpreting any particular hot or cold 'spot' as real.

Many independent observations of the CMBR have been made since then (Wayne Hu has a nice website which seems to be pretty comprehensive), including the much-discussed WMAP.

What papers have been published on the extent to which particular spots have been observed by different teams/instruments/missions?
 
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  • #2
No one has attempted this to my knowledge, Nereid. I would assume the CMBR intensity would be fairly constant, if not of local origin.
 
  • #3
I believe that same spots have been detected by different telescopes. Otherwise things like correlations between clusters and Sunyaev-Zeldovich effect would not be possible at all, and this has been actually done. There are very interesting examples of this. I guess that the CMB maps of different telescopes look very similar, and not only statistically similar.
 

1. What is CMBR and why is it significant?

CMBR, or cosmic microwave background radiation, is a type of low-energy electromagnetic radiation that permeates the entire universe. It is considered significant because it is the oldest light in the universe, dating back to just 380,000 years after the Big Bang, and provides valuable information about the early universe.

2. What are the 'spots' in CMBR and why are multiple detections important?

The 'spots' in CMBR refer to small variations in the temperature of the radiation across the sky. Multiple detections of these spots are important because they can provide evidence for the inflation theory of the universe, which suggests that the universe underwent a rapid expansion shortly after the Big Bang.

3. How are these 'spots' detected in CMBR?

The 'spots' in CMBR are detected using specialized instruments, such as the Planck satellite or ground-based telescopes, which are designed to measure the temperature of the radiation across the sky. The data from these instruments is then analyzed to identify and map out the locations and characteristics of the 'spots'.

4. What does the detection of multiple 'spots' in CMBR tell us about the universe?

The detection of multiple 'spots' in CMBR tells us that the universe is not completely uniform, but rather has small variations in temperature. This supports the theory of inflation and also provides insight into the distribution of matter and energy in the early universe.

5. How does the detection of multiple 'spots' in CMBR impact our understanding of the Big Bang theory?

The detection of multiple 'spots' in CMBR provides strong evidence for the Big Bang theory and supports the idea that the universe underwent a period of rapid expansion. It also helps to refine and improve our understanding of the early universe and the processes that led to its formation.

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